FragmentManager.java revision d15baded7e3e904ef00ccda50449c2adf8374f11
166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne/* 266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Copyright (C) 2011 The Android Open Source Project 366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Licensed under the Apache License, Version 2.0 (the "License"); 566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * you may not use this file except in compliance with the License. 666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * You may obtain a copy of the License at 766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * http://www.apache.org/licenses/LICENSE-2.0 966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 1066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Unless required by applicable law or agreed to in writing, software 1166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * distributed under the License is distributed on an "AS IS" BASIS, 1266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * See the License for the specific language governing permissions and 1466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * limitations under the License. 1566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 1666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 1766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhnepackage android.support.v4.app; 1866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 19c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; 2066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 21f50550926a7bddc24adf822876f35812d7d8c7beRoshan Piusimport android.animation.Animator; 2266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.animation.AnimatorInflater; 23f50550926a7bddc24adf822876f35812d7d8c7beRoshan Piusimport android.animation.AnimatorListenerAdapter; 24c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.animation.AnimatorSet; 2566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.animation.PropertyValuesHolder; 2666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.animation.ValueAnimator; 2766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.content.Context; 28c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Piusimport android.content.res.Configuration; 29727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Piusimport android.content.res.Resources.NotFoundException; 3066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.content.res.TypedArray; 31c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.os.Build; 32c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.os.Bundle; 33c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.os.Looper; 34c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.os.Parcel; 35c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.os.Parcelable; 3666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.support.annotation.CallSuper; 3766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.support.annotation.IdRes; 3866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.support.annotation.NonNull; 3964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Piusimport android.support.annotation.RestrictTo; 4066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.support.annotation.StringRes; 4164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Piusimport android.support.v4.util.ArraySet; 4266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.support.v4.util.DebugUtils; 43c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Piusimport android.support.v4.util.LogWriter; 442104cc5eaf4ed7b9047ca1de460838a8ca6d0fe1Roshan Piusimport android.support.v4.util.Pair; 452104cc5eaf4ed7b9047ca1de460838a8ca6d0fe1Roshan Piusimport android.support.v4.view.ViewCompat; 4666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.util.AttributeSet; 4766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.util.Log; 4866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.util.SparseArray; 4966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.LayoutInflater; 5066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.Menu; 5166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.MenuInflater; 5266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.MenuItem; 5366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.View; 54c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Piusimport android.view.ViewGroup; 5566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.animation.AccelerateInterpolator; 5666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.animation.AlphaAnimation; 5766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.animation.Animation; 5866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.animation.Animation.AnimationListener; 5966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport android.view.animation.AnimationSet; 6003fea88ccab149c07391d38f3c406bb04ab0a3a9Roshan Piusimport android.view.animation.AnimationUtils; 61b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport android.view.animation.DecelerateInterpolator; 62b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport android.view.animation.Interpolator; 63b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport android.view.animation.ScaleAnimation; 64b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius 65b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport java.io.FileDescriptor; 66b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport java.io.PrintWriter; 67b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Piusimport java.lang.reflect.Field; 68a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wangimport java.util.ArrayList; 6966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport java.util.Arrays; 7066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport java.util.Collections; 7166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport java.util.List; 7266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhneimport java.util.concurrent.CopyOnWriteArrayList; 7364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 744e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar/** 754e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * Static library support version of the framework's {@link android.app.FragmentManager}. 76c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius * Used to write apps that run on platforms prior to Android 3.0. When running 77c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius * on Android 3.0 or above, this implementation is still used; it does not try 784e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * to switch to the framework's implementation. See the framework {@link FragmentManager} 7966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * documentation for a class overview. 80c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius * 81c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius * <p>Your activity must derive from {@link FragmentActivity} to use this. From such an activity, 8266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * you can acquire the {@link FragmentManager} by calling 834e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * {@link FragmentActivity#getSupportFragmentManager}. 844e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar */ 854e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwarpublic abstract class FragmentManager { 864e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar /** 874e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * Representation of an entry on the fragment back stack, as created 884e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * with {@link FragmentTransaction#addToBackStack(String) 894e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * FragmentTransaction.addToBackStack()}. Entries can later be 904e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * retrieved with {@link FragmentManager#getBackStackEntryAt(int) 914e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * FragmentManager.getBackStackEntryAt()}. 924e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * 934e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * <p>Note that you should never hold on to a BackStackEntry object; 944e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * the identifier as returned by {@link #getId} is the only thing that 954e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * will be persisted across activity instances. 964e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar */ 974e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar public interface BackStackEntry { 984e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar /** 994e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * Return the unique identifier for the entry. This is the only 10066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * representation of the entry that will persist across activity 10166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * instances. 10266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 10366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public int getId(); 10466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 10566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 10666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Get the name that was supplied to 10766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link FragmentTransaction#addToBackStack(String) 108c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius * FragmentTransaction.addToBackStack(String)} when creating this entry. 109c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius */ 110c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius public String getName(); 11166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 11266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 11366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Return the full bread crumb title resource identifier for the entry, 11466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * or 0 if it does not have one. 11566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 11666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @StringRes 11766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public int getBreadCrumbTitleRes(); 11866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 11966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 12066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Return the short bread crumb title resource identifier for the entry, 12166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * or 0 if it does not have one. 12266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 12366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @StringRes 124f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius public int getBreadCrumbShortTitleRes(); 12566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 12666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 127f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Return the full bread crumb title for the entry, or null if it 12866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * does not have one. 12966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 13066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public CharSequence getBreadCrumbTitle(); 131f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius 132f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius /** 133f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Return the short bread crumb title for the entry, or null if it 134f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * does not have one. 135f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius */ 136f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius public CharSequence getBreadCrumbShortTitle(); 137f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius } 138f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius 139f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius /** 140f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Interface to watch for changes to the back stack. 141f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius */ 142f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius public interface OnBackStackChangedListener { 143f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius /** 144f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Called whenever the contents of the back stack change. 145f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius */ 146f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius public void onBackStackChanged(); 147f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius } 148f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius 149f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius /** 150f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Start a series of edit operations on the Fragments associated with 151f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * this FragmentManager. 152f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * 15366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * <p>Note: A fragment transaction can only be created/committed prior 15466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * to an activity saving its state. If you try to commit a transaction 15566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * after {@link FragmentActivity#onSaveInstanceState FragmentActivity.onSaveInstanceState()} 15667bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * (and prior to a following {@link FragmentActivity#onStart FragmentActivity.onStart} 15767bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * or {@link FragmentActivity#onResume FragmentActivity.onResume()}, you will get an error. 15867bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * This is because the framework takes care of saving your current fragments 15967bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * in the state, and if changes are made after the state is saved then they 16067bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * will be lost.</p> 16167bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius */ 16267bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius public abstract FragmentTransaction beginTransaction(); 16367bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius 16467bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius /** 16567bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * @hide -- remove once prebuilts are in. 16667bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius * @deprecated 16767bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius */ 16867bbcdc2c81824ff671a5a1d8475a598199e342eRoshan Pius @RestrictTo(LIBRARY_GROUP) 16966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Deprecated 17066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public FragmentTransaction openTransaction() { 17166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return beginTransaction(); 17266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 17366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 17466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 17566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * After a {@link FragmentTransaction} is committed with 17666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link FragmentTransaction#commit FragmentTransaction.commit()}, it 17766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * is scheduled to be executed asynchronously on the process's main thread. 17866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * If you want to immediately executing any such pending operations, you 17964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * can call this function (only from the main thread) to do so. Note that 18064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * all callbacks and other related behavior will be done from within this 18164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * call, so be careful about where this is called from. 18264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 18364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <p>If you are committing a single transaction that does not modify the 18464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * fragment back stack, strongly consider using 18564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * {@link FragmentTransaction#commitNow()} instead. This can help avoid 18664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * unwanted side effects when other code in your app has pending committed 18764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * transactions that expect different timing.</p> 18864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <p> 18964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * This also forces the start of any postponed Transactions where 19064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * {@link Fragment#postponeEnterTransition()} has been called. 19164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 19264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @return Returns true if there were any pending transactions to be 19364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * executed. 19464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 19564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract boolean executePendingTransactions(); 19664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 19764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 19864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Finds a fragment that was identified by the given id either when inflated 19964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * from XML or as the container ID when added in a transaction. This first 20064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * searches through fragments that are currently added to the manager's 20164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * activity; if no such fragment is found, then all fragments currently 20264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * on the back stack associated with this ID are searched. 20364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @return The fragment if found or null otherwise. 20464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 20564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract Fragment findFragmentById(@IdRes int id); 20664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 20764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 20864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Finds a fragment that was identified by the given tag either when inflated 20964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * from XML or as supplied when added in a transaction. This first 21064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * searches through fragments that are currently added to the manager's 21164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * activity; if no such fragment is found, then all fragments currently 21264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * on the back stack are searched. 213cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * @return The fragment if found or null otherwise. 214cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius */ 215cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius public abstract Fragment findFragmentByTag(String tag); 216cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius 217cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius /** 218cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * Flag for {@link #popBackStack(String, int)} 219cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * and {@link #popBackStack(int, int)}: If set, and the name or ID of 220cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * a back stack entry has been supplied, then all matching entries will 221cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * be consumed until one that doesn't match is found or the bottom of 222cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * the stack is reached. Otherwise, all entries up to but not including that entry 223cb9565f0cb8fa92346549bcacdfbf91cdf8e6bd3Roshan Pius * will be removed. 224727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius */ 225727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius public static final int POP_BACK_STACK_INCLUSIVE = 1<<0; 226727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius 227727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius /** 228727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * Pop the top state off the back stack. Returns true if there was one 229727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * to pop, else false. This function is asynchronous -- it enqueues the 230727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * request to pop, but the action will not be performed until the application 231727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * returns to its event loop. 232727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius */ 233727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius public abstract void popBackStack(); 234727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius 235727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius /** 236727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * Like {@link #popBackStack()}, but performs the operation immediately 237727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * inside of the call. This is like calling {@link #executePendingTransactions()} 238727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * afterwards without forcing the start of postponed Transactions. 239727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius * @return Returns true if there was something popped, else false. 24066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 24166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract boolean popBackStackImmediate(); 24266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 24366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 24466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Pop the last fragment transition from the manager's fragment 24566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * back stack. If there is nothing to pop, false is returned. 24666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * This function is asynchronous -- it enqueues the 24766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * request to pop, but the action will not be performed until the application 24866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * returns to its event loop. 24966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 25066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param name If non-null, this is the name of a previous back state 25166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * to look for; if found, all states up to that state will be popped. The 25266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 25366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * the named state itself is popped. If null, only the top state is popped. 25466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 25566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 25666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract void popBackStack(String name, int flags); 25766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 25866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 25966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Like {@link #popBackStack(String, int)}, but performs the operation immediately 26066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * inside of the call. This is like calling {@link #executePendingTransactions()} 26166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * afterwards without forcing the start of postponed Transactions. 26266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @return Returns true if there was something popped, else false. 26366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 26466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract boolean popBackStackImmediate(String name, int flags); 26566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 26666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 26766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Pop all back stack states up to the one with the given identifier. 26866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * This function is asynchronous -- it enqueues the 26966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * request to pop, but the action will not be performed until the application 27066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * returns to its event loop. 27166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 27266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param id Identifier of the stated to be popped. If no identifier exists, 27366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * false is returned. 27466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * The identifier is the number returned by 27566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link FragmentTransaction#commit() FragmentTransaction.commit()}. The 27666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 27766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * the named state itself is popped. 27866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 27966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 28066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract void popBackStack(int id, int flags); 28166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 28266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 28366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Like {@link #popBackStack(int, int)}, but performs the operation immediately 28466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * inside of the call. This is like calling {@link #executePendingTransactions()} 28566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * afterwards without forcing the start of postponed Transactions. 28666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @return Returns true if there was something popped, else false. 28766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 28866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract boolean popBackStackImmediate(int id, int flags); 28966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 29066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 29166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Return the number of entries currently in the back stack. 29266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 29366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract int getBackStackEntryCount(); 29466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 29566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 29666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Return the BackStackEntry at index <var>index</var> in the back stack; 29766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * entries start index 0 being the bottom of the stack. 29866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 29966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract BackStackEntry getBackStackEntryAt(int index); 30066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 30166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 30266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Add a new listener for changes to the fragment back stack. 30366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 30466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract void addOnBackStackChangedListener(OnBackStackChangedListener listener); 30566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 30666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 30766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Remove a listener that was previously added with 30866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link #addOnBackStackChangedListener(OnBackStackChangedListener)}. 30966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 31066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract void removeOnBackStackChangedListener(OnBackStackChangedListener listener); 31166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 31266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 31366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Put a reference to a fragment in a Bundle. This Bundle can be 31466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * persisted as saved state, and when later restoring 31566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * {@link #getFragment(Bundle, String)} will return the current 31666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * instance of the same fragment. 31766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 31866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param bundle The bundle in which to put the fragment reference. 31966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param key The name of the entry in the bundle. 32066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param fragment The Fragment whose reference is to be stored. 32166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 32266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract void putFragment(Bundle bundle, String key, Fragment fragment); 32366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 32466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 32566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Retrieve the current Fragment instance for a reference previously 32666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * placed with {@link #putFragment(Bundle, String, Fragment)}. 32764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 32866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param bundle The bundle from which to retrieve the fragment reference. 32966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @param key The name of the entry in the bundle. 33066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @return Returns the current Fragment instance that is associated with 33166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * the given reference. 33266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 33366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract Fragment getFragment(Bundle bundle, String key); 33466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 33566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 33666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * Get a list of all fragments that are currently added to the FragmentManager. 33766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * This may include those that are hidden as well as those that are shown. 33866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * This will not include any fragments only in the back stack, or fragments that 33966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * are detached or removed. 34066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * <p> 34166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * The order of the fragments in the list is the order in which they were 34266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * added or attached. 34366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 34466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * @return A list of all fragments that are added to the FragmentManager. 34566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 34666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public abstract List<Fragment> getFragments(); 34766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 34866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 34964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Save the current instance state of the given Fragment. This can be 35064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * used later when creating a new instance of the Fragment and adding 35164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * it to the fragment manager, to have it create itself to match the 35264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * current state returned here. Note that there are limits on how 35364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * this can be used: 35464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 35564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <ul> 35664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <li>The Fragment must currently be attached to the FragmentManager. 35764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <li>A new Fragment created using this saved state must be the same class 35864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * type as the Fragment it was created from. 35964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * <li>The saved state can not contain dependencies on other fragments -- 36064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * that is it can't use {@link #putFragment(Bundle, String, Fragment)} to 36164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * store a fragment reference because that reference may not be valid when 36264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * this saved state is later used. Likewise the Fragment's target and 36364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * result code are not included in this state. 36464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * </ul> 36564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 36664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @param f The Fragment whose state is to be saved. 36764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @return The generated state. This will be null if there was no 36864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * interesting state created by the fragment. 36964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 37064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract Fragment.SavedState saveFragmentInstanceState(Fragment f); 37164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 37264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 37364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Returns true if the final {@link android.app.Activity#onDestroy() Activity.onDestroy()} 37464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * call has been made on the FragmentManager's Activity, so this instance is now dead. 37564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 37664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract boolean isDestroyed(); 37764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 37864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 37964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Registers a {@link FragmentLifecycleCallbacks} to listen to fragment lifecycle events 38064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * happening in this FragmentManager. All registered callbacks will be automatically 38164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * unregistered when this FragmentManager is destroyed. 38264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 38364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @param cb Callbacks to register 38464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @param recursive true to automatically register this callback for all child FragmentManagers 38564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 38664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract void registerFragmentLifecycleCallbacks(FragmentLifecycleCallbacks cb, 38764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius boolean recursive); 38864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 38964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 39064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Unregisters a previously registered {@link FragmentLifecycleCallbacks}. If the callback 39164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * was not previously registered this call has no effect. All registered callbacks will be 39264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * automatically unregistered when this FragmentManager is destroyed. 39364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 39464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * @param cb Callbacks to unregister 39564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 39664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public abstract void unregisterFragmentLifecycleCallbacks(FragmentLifecycleCallbacks cb); 39764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 39864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 39964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Return the currently active primary navigation fragment for this FragmentManager. 40064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * The primary navigation fragment is set by fragment transactions using 40164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * {@link FragmentTransaction#setPrimaryNavigationFragment(Fragment)}. 40264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * 403445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * <p>The primary navigation fragment's 404445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#getChildFragmentManager() child FragmentManager} will be called first 405445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * to process delegated navigation actions such as {@link #popBackStack()} if no ID 406445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * or transaction name is provided to pop to.</p> 407445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 408445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @return the fragment designated as the primary navigation fragment 409445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 410445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public abstract Fragment getPrimaryNavigationFragment(); 411dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius 412dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius /** 413dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * Print the FragmentManager's state into the given stream. 414dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * 415445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param prefix Text to print at the front of each line. 416445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fd The raw file descriptor that the dump is being sent to. 417445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param writer A PrintWriter to which the dump is to be set. 418445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param args Additional arguments to the dump request. 419445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 420445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public abstract void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args); 421445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 422445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 423445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Control whether the framework's internal fragment manager debugging 424445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * logs are turned on. If enabled, you will see output in logcat as 425445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * the framework performs fragment operations. 426445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 427445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public static void enableDebugLogging(boolean enabled) { 428445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius FragmentManagerImpl.DEBUG = enabled; 429445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 430445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 431445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 432445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Returns {@code true} if the FragmentManager's state has already been saved 433445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * by its host. Any operations that would change saved state should not be performed 434445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * if this method returns true. For example, any popBackStack() method, such as 435445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link #popBackStackImmediate()} or any FragmentTransaction using 436445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link FragmentTransaction#commit()} instead of 437445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link FragmentTransaction#commitAllowingStateLoss()} will change 438445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * the state and will result in an error. 439445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 440445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @return true if this FragmentManager's state has already been saved by its host 441445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 442445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public abstract boolean isStateSaved(); 443445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 444dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius /** 445dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * Callback interface for listening to fragment state changes that happen 446dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * within a given FragmentManager. 447dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius */ 448dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius public abstract static class FragmentLifecycleCallbacks { 449dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius /** 450445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called right before the fragment's {@link Fragment#onAttach(Context)} method is called. 451445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * This is a good time to inject any required dependencies or perform other configuration 452445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * for the fragment before any of the fragment's lifecycle methods are invoked. 453445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 454445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 455445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 456445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param context Context that the Fragment is being attached to 457445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 458445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentPreAttached(FragmentManager fm, Fragment f, Context context) {} 459445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 460445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 461445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has been attached to its host. Its host will have had 462445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * <code>onAttachFragment</code> called before this call happens. 463445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 464445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 465445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 466445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param context Context that the Fragment was attached to 467445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 468445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentAttached(FragmentManager fm, Fragment f, Context context) {} 469445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 470445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 471445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called right before the fragment's {@link Fragment#onCreate(Bundle)} method is called. 472445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * This is a good time to inject any required dependencies or perform other configuration 473445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * for the fragment. 474445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 475445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 476445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 477445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param savedInstanceState Saved instance bundle from a previous instance 478445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 479dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius public void onFragmentPreCreated(FragmentManager fm, Fragment f, 480dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius Bundle savedInstanceState) {} 481dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius 482dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius /** 483445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 484445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onCreate(Bundle)}. This will only happen once for any given 485445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * fragment instance, though the fragment may be attached and detached multiple times. 486445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 487445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 488445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 489445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param savedInstanceState Saved instance bundle from a previous instance 490445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 491445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentCreated(FragmentManager fm, Fragment f, Bundle savedInstanceState) {} 492445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 493445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 494445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 495445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onActivityCreated(Bundle)}. This will only happen once for any given 496445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * fragment instance, though the fragment may be attached and detached multiple times. 497445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 498445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 499445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 500445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param savedInstanceState Saved instance bundle from a previous instance 501445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 502445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentActivityCreated(FragmentManager fm, Fragment f, 503dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius Bundle savedInstanceState) {} 504dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius 505445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 506445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned a non-null view from the FragmentManager's 507445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * request to {@link Fragment#onCreateView(LayoutInflater, ViewGroup, Bundle)}. 508445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 509445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 510445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment that created and owns the view 511445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param v View returned by the fragment 512445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param savedInstanceState Saved instance bundle from a previous instance 513445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 514445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentViewCreated(FragmentManager fm, Fragment f, View v, 515445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius Bundle savedInstanceState) {} 516445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 517445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 518445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 519445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onStart()}. 520445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 521445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 522445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 523445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 524445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentStarted(FragmentManager fm, Fragment f) {} 525445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 526445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 527dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * Called after the fragment has returned from the FragmentManager's call to 528dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * {@link Fragment#onResume()}. 529dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius * 530445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 531445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 532445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 533445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentResumed(FragmentManager fm, Fragment f) {} 534445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 535445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 536445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 537445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onPause()}. 538445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 539445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 540445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 541445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 542445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentPaused(FragmentManager fm, Fragment f) {} 543445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 544445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 545445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 546445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onStop()}. 547445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 548445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 549445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 550445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 551445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentStopped(FragmentManager fm, Fragment f) {} 552445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 553445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 554445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 555445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onSaveInstanceState(Bundle)}. 556445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 557445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 558445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 559445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param outState Saved state bundle for the fragment 560dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius */ 561dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius public void onFragmentSaveInstanceState(FragmentManager fm, Fragment f, Bundle outState) {} 562dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius 563445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 564445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 565445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onDestroyView()}. 566445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 567445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 568445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 569445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 570445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentViewDestroyed(FragmentManager fm, Fragment f) {} 571445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 572445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 573445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 574445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * {@link Fragment#onDestroy()}. 575445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 576445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 577445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 578445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 579445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentDestroyed(FragmentManager fm, Fragment f) {} 580445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 581445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius /** 582445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * Called after the fragment has returned from the FragmentManager's call to 5832104cc5eaf4ed7b9047ca1de460838a8ca6d0fe1Roshan Pius * {@link Fragment#onDetach()}. 584445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * 585445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param fm Host FragmentManager 586445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius * @param f Fragment changing state 587445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius */ 588445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void onFragmentDetached(FragmentManager fm, Fragment f) {} 589445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 590445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius} 591445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 592445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Piusfinal class FragmentManagerState implements Parcelable { 593445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius FragmentState[] mActive; 594445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius int[] mAdded; 595445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius BackStackState[] mBackStack; 596445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius int mPrimaryNavActiveIndex = -1; 597445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius int mNextFragmentIndex; 598445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 599445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public FragmentManagerState() { 600445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 601445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 6022104cc5eaf4ed7b9047ca1de460838a8ca6d0fe1Roshan Pius public FragmentManagerState(Parcel in) { 603445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius mActive = in.createTypedArray(FragmentState.CREATOR); 604445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius mAdded = in.createIntArray(); 605445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius mBackStack = in.createTypedArray(BackStackState.CREATOR); 606445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius mPrimaryNavActiveIndex = in.readInt(); 607445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius mNextFragmentIndex = in.readInt(); 608445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 609445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 610445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius @Override 611445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public int describeContents() { 612445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius return 0; 613445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 614445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 615445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius @Override 616445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public void writeToParcel(Parcel dest, int flags) { 617445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius dest.writeTypedArray(mActive, flags); 618445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius dest.writeIntArray(mAdded); 619445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius dest.writeTypedArray(mBackStack, flags); 620445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius dest.writeInt(mPrimaryNavActiveIndex); 6214e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar dest.writeInt(mNextFragmentIndex); 622445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 623445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 624445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public static final Parcelable.Creator<FragmentManagerState> CREATOR 6252104cc5eaf4ed7b9047ca1de460838a8ca6d0fe1Roshan Pius = new Parcelable.Creator<FragmentManagerState>() { 626445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius @Override 627445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius public FragmentManagerState createFromParcel(Parcel in) { 628445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius return new FragmentManagerState(in); 629445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius } 6304e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar 6314e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar @Override 6324e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar public FragmentManagerState[] newArray(int size) { 6334e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar return new FragmentManagerState[size]; 6344e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar } 6354e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar }; 6364e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar} 6374e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar 6384e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar/** 6394e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar * Container for fragments associated with an activity. 6404e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar */ 6414e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwarfinal class FragmentManagerImpl extends FragmentManager implements LayoutInflater.Factory2 { 6424e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static boolean DEBUG = false; 6434e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static final String TAG = "FragmentManager"; 6444e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar 6454e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static final String TARGET_REQUEST_CODE_STATE_TAG = "android:target_req_state"; 6464e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static final String TARGET_STATE_TAG = "android:target_state"; 6474e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static final String VIEW_STATE_TAG = "android:view_state"; 6484e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar static final String USER_VISIBLE_HINT_TAG = "android:user_visible_hint"; 6494e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar 6504e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar ArrayList<OpGenerator> mPendingActions; 651445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius boolean mExecutingActions; 652445b5f46264af0a2e9c043c9badb2b4f38044f11Roshan Pius 653c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius int mNextFragmentIndex = 0; 654c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 655c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<Fragment> mAdded; 656c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius SparseArray<Fragment> mActive; 657c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<BackStackRecord> mBackStack; 658c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<Fragment> mCreatedMenus; 659c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 660c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius // Must be accessed while locked. 661c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<BackStackRecord> mBackStackIndices; 662c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<Integer> mAvailBackStackIndices; 663c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 664c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<OnBackStackChangedListener> mBackStackChangeListeners; 665c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius private CopyOnWriteArrayList<Pair<FragmentLifecycleCallbacks, Boolean>> mLifecycleCallbacks; 666c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 667c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius int mCurState = Fragment.INITIALIZING; 668c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius FragmentHostCallback mHost; 669c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius FragmentContainer mContainer; 670c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius Fragment mParent; 671c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius Fragment mPrimaryNav; 672c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 673c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius static Field sAnimationListenerField = null; 674c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 675c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius boolean mNeedMenuInvalidate; 676c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius boolean mStateSaved; 677c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius boolean mDestroyed; 678c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius String mNoTransactionsBecause; 679c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius boolean mHavePendingDeferredStart; 680c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 681c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius // Temporary vars for removing redundant operations in BackStackRecords: 682c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<BackStackRecord> mTmpRecords; 683c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<Boolean> mTmpIsPop; 684c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<Fragment> mTmpAddedFragments; 685c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 686c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius // Temporary vars for state save and restore. 687c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius Bundle mStateBundle = null; 688c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius SparseArray<Parcelable> mStateArray = null; 689c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 690c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius // Postponed transactions. 691c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius ArrayList<StartEnterTransitionListener> mPostponedTransactions; 692c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 693c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius // Saved FragmentManagerNonConfig during saveAllState() and cleared in noteStateNotSaved() 694c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius FragmentManagerNonConfig mSavedNonConfig; 695c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius 696c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius Runnable mExecCommit = new Runnable() { 697c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 698c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public void run() { 699c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius execPendingActions(); 700c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 701c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius }; 702c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 703c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius static boolean modifiesAlpha(AnimationOrAnimator anim) { 704c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (anim.animation instanceof AlphaAnimation) { 705c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return true; 706c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } else if (anim.animation instanceof AnimationSet) { 707c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius List<Animation> anims = ((AnimationSet) anim.animation).getAnimations(); 708c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius for (int i = 0; i < anims.size(); i++) { 709c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (anims.get(i) instanceof AlphaAnimation) { 710c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return true; 711c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 712c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 713c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return false; 714c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } else { 715c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return modifiesAlpha(anim.animator); 716c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 717c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 718c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 719c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius static boolean modifiesAlpha(Animator anim) { 720c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (anim == null) { 721c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return false; 722c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 723c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (anim instanceof ValueAnimator) { 724c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius ValueAnimator valueAnim = (ValueAnimator) anim; 725c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius PropertyValuesHolder[] values = valueAnim.getValues(); 726c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius for (int i = 0; i < values.length; i++) { 727c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (("alpha").equals(values[i].getPropertyName())) { 728c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return true; 729c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 730c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 731c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } else if (anim instanceof AnimatorSet) { 732c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius List<Animator> animList = ((AnimatorSet) anim).getChildAnimations(); 733c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius for (int i = 0; i < animList.size(); i++) { 734c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (modifiesAlpha(animList.get(i))) { 735c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return true; 736c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 737c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 738c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 739c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return false; 740c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 741c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 742c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius static boolean shouldRunOnHWLayer(View v, AnimationOrAnimator anim) { 743c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (v == null || anim == null) { 744c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return false; 745c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 746c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return Build.VERSION.SDK_INT >= 19 747c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius && v.getLayerType() == View.LAYER_TYPE_NONE 748c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius && ViewCompat.hasOverlappingRendering(v) 749c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius && modifiesAlpha(anim); 750c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 751c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 752c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius private void throwException(RuntimeException ex) { 753c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius Log.e(TAG, ex.getMessage()); 754c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius Log.e(TAG, "Activity state:"); 755c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius LogWriter logw = new LogWriter(TAG); 756c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius PrintWriter pw = new PrintWriter(logw); 757c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (mHost != null) { 758c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius try { 759c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius mHost.onDump(" ", null, pw, new String[] { }); 760c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } catch (Exception e) { 761c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius Log.e(TAG, "Failed dumping state", e); 762c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 763c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } else { 764c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius try { 765c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius dump(" ", null, pw, new String[] { }); 766c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } catch (Exception e) { 767c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius Log.e(TAG, "Failed dumping state", e); 768c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 769c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 770c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius throw ex; 771c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 772c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 773c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 774c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public FragmentTransaction beginTransaction() { 775c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return new BackStackRecord(this); 776c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 777dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius 778dd685b34596b790c76e2cc03fc825c1249c9174fRoshan Pius @Override 779c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public boolean executePendingTransactions() { 780c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius boolean updates = execPendingActions(); 781c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius forcePostponedTransactions(); 782c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return updates; 783c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 784c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 785c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 786c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public void popBackStack() { 787c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius enqueueAction(new PopBackStackState(null, -1, 0), false); 788c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 789c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 790c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 791c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public boolean popBackStackImmediate() { 792c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius checkStateLoss(); 793c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return popBackStackImmediate(null, -1, 0); 794c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 795c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 796c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 797c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius public void popBackStack(final String name, final int flags) { 798c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius enqueueAction(new PopBackStackState(name, -1, flags), false); 799c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 800c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius 801c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius @Override 80266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public boolean popBackStackImmediate(String name, int flags) { 80366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne checkStateLoss(); 80466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return popBackStackImmediate(name, -1, flags); 80566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 80666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 80766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 80866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public void popBackStack(final int id, final int flags) { 80966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (id < 0) { 81066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne throw new IllegalArgumentException("Bad id: " + id); 81166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 81266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne enqueueAction(new PopBackStackState(null, id, flags), false); 81366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 81466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 81564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius @Override 81666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public boolean popBackStackImmediate(int id, int flags) { 81766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne checkStateLoss(); 81866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne execPendingActions(); 81964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (id < 0) { 82064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius throw new IllegalArgumentException("Bad id: " + id); 82164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 82264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return popBackStackImmediate(null, id, flags); 82364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 82464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 82564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 82664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Used by all public popBackStackImmediate methods, this executes pending transactions and 82766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * returns true if the pop action did anything, regardless of what other pending 82866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * transactions did. 82966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 830b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius * @return true if the pop operation did anything or false otherwise. 831b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius */ 832b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius private boolean popBackStackImmediate(String name, int id, int flags) { 833b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius execPendingActions(); 834b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius ensureExecReady(true); 835b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius 836b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius if (mPrimaryNav != null // We have a primary nav fragment 837b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius && id < 0 // No valid id (since they're local) 838b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius && name == null) { // no name to pop to (since they're local) 839b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius final FragmentManager childManager = mPrimaryNav.peekChildFragmentManager(); 840b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius if (childManager != null && childManager.popBackStackImmediate()) { 841b8b3fb8228a1f90106bad8c59ce006b81ef7921cRoshan Pius // We did something, just not to this specific FragmentManager. Return true. 842a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang return true; 843a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang } 844a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang } 845a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang 846a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang boolean executePop = popBackStackState(mTmpRecords, mTmpIsPop, name, id, flags); 847a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang if (executePop) { 848a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang mExecutingActions = true; 849a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang try { 850a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang removeRedundantOperationsAndExecute(mTmpRecords, mTmpIsPop); 851a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang } finally { 852a1da73ea4926ce8a5689594ff3685b0fe033d99fNingyuan Wang cleanupExec(); 85366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 85466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 85566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 85666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne doPendingDeferredStart(); 85766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne burpActive(); 85866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return executePop; 85966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 86066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 86166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 86266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public int getBackStackEntryCount() { 86366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return mBackStack != null ? mBackStack.size() : 0; 86466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 86566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 86666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 86766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public BackStackEntry getBackStackEntryAt(int index) { 86866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return mBackStack.get(index); 86966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 87066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 871727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius @Override 872727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius public void addOnBackStackChangedListener(OnBackStackChangedListener listener) { 873727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius if (mBackStackChangeListeners == null) { 874727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius mBackStackChangeListeners = new ArrayList<OnBackStackChangedListener>(); 875727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius } 876727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius mBackStackChangeListeners.add(listener); 877727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius } 87866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 87966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 88066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public void removeOnBackStackChangedListener(OnBackStackChangedListener listener) { 88166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mBackStackChangeListeners != null) { 88266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne mBackStackChangeListeners.remove(listener); 88366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 88466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 88566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 88666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 88766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public void putFragment(Bundle bundle, String key, Fragment fragment) { 88866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (fragment.mIndex < 0) { 88966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne throwException(new IllegalStateException("Fragment " + fragment 89066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne + " is not currently in the FragmentManager")); 89166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 89266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne bundle.putInt(key, fragment.mIndex); 89366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 89466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 89566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 89666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public Fragment getFragment(Bundle bundle, String key) { 89766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne int index = bundle.getInt(key, -1); 89866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (index == -1) { 89966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return null; 90066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 90166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne Fragment f = mActive.get(index); 90266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (f == null) { 90366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne throwException(new IllegalStateException("Fragment no longer exists for key " 90466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne + key + ": index " + index)); 90566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 90666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return f; 90766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 90866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 90966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 91066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public List<Fragment> getFragments() { 91166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mAdded == null) { 91266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return Collections.EMPTY_LIST; 91366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 91466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne synchronized (mAdded) { 91566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return (List<Fragment>) mAdded.clone(); 91666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 91766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 91866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 91966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne /** 92066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * This is used by FragmentController to get the Active fragments. 92166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * 922f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * @return A list of active fragments in the fragment manager, including those that are in the 92366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne * back stack. 92466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne */ 92566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne List<Fragment> getActiveFragments() { 92666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mActive == null) { 92766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return null; 92866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 92966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne final int count = mActive.size(); 93066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne ArrayList<Fragment> fragments = new ArrayList<>(count); 93166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i = 0; i < count; i++) { 93266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne fragments.add(mActive.valueAt(i)); 93366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 93466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return fragments; 93566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 93666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 937f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius /** 938f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * Used by FragmentController to get the number of Active Fragments. 939f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * 940f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius * @return The number of active fragments. 941f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius */ 942f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius int getActiveFragmentCount() { 943f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius if (mActive == null) { 944f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius return 0; 945f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius } 946f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius return mActive.size(); 947f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius } 948f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius 949f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius @Override 950f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius public Fragment.SavedState saveFragmentInstanceState(Fragment fragment) { 951f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius if (fragment.mIndex < 0) { 95266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne throwException( new IllegalStateException("Fragment " + fragment 95366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne + " is not currently in the FragmentManager")); 95466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 95566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (fragment.mState > Fragment.INITIALIZING) { 95666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne Bundle result = saveFragmentBasicState(fragment); 95766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return result != null ? new Fragment.SavedState(result) : null; 95866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 95966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return null; 96066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 96166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 96266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 96366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public boolean isDestroyed() { 96466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return mDestroyed; 96566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 96666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 96766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 96866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public String toString() { 96966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne StringBuilder sb = new StringBuilder(128); 97066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne sb.append("FragmentManager{"); 97166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne sb.append(Integer.toHexString(System.identityHashCode(this))); 97266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne sb.append(" in "); 97366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mParent != null) { 97466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne DebugUtils.buildShortClassTag(mParent, sb); 97566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } else { 97666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne DebugUtils.buildShortClassTag(mHost, sb); 97766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 97866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne sb.append("}}"); 97966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne return sb.toString(); 98066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 98166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 98266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne @Override 98366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 98466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne String innerPrefix = prefix + " "; 98566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 98666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne int N; 98766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mActive != null) { 98866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mActive.size(); 98966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 99066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print("Active Fragments in "); 99166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(Integer.toHexString(System.identityHashCode(this))); 99266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.println(":"); 99366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 99466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne Fragment f = mActive.valueAt(i); 99566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 99666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(f); 99766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (f != null) { 99866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.dump(innerPrefix, fd, writer, args); 99966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 100066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 100166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 100266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 100366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 100466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mAdded != null) { 100566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mAdded.size(); 100666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 100766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("Added Fragments:"); 100866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 100966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne Fragment f = mAdded.get(i); 101066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 101166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(f.toString()); 101266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 101366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 101466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 101566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 101666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mCreatedMenus != null) { 101766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mCreatedMenus.size(); 101866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 101966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("Fragments Created Menus:"); 102066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 102166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne Fragment f = mCreatedMenus.get(i); 102266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 102366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(f.toString()); 102466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 102566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 102666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 102766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 102866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mBackStack != null) { 102966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mBackStack.size(); 103066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 103166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("Back Stack:"); 103266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 103366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne BackStackRecord bs = mBackStack.get(i); 103466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 103566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(bs.toString()); 103666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne bs.dump(innerPrefix, fd, writer, args); 103766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 103866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 103966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 104066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 104166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne synchronized (this) { 104266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mBackStackIndices != null) { 104366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mBackStackIndices.size(); 104466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 104566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("Back Stack Indices:"); 104666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 104766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne BackStackRecord bs = mBackStackIndices.get(i); 104866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 104966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(bs); 105066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 105166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 105266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 105366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 105466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mAvailBackStackIndices != null && mAvailBackStackIndices.size() > 0) { 105566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print("mAvailBackStackIndices: "); 105666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.println(Arrays.toString(mAvailBackStackIndices.toArray())); 105766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 105866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 105966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 106066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mPendingActions != null) { 106166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne N = mPendingActions.size(); 106266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (N > 0) { 106366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("Pending Actions:"); 106466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne for (int i=0; i<N; i++) { 106566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne OpGenerator r = mPendingActions.get(i); 106666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" #"); writer.print(i); 106766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(": "); writer.println(r); 106866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 106966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 107066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 107166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 107266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.println("FragmentManager misc state:"); 107366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne writer.print(prefix); writer.print(" mHost="); writer.println(mHost); 107464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(prefix); writer.print(" mContainer="); writer.println(mContainer); 107564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (mParent != null) { 107664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(prefix); writer.print(" mParent="); writer.println(mParent); 107764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 107864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(prefix); writer.print(" mCurState="); writer.print(mCurState); 107964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(" mStateSaved="); writer.print(mStateSaved); 108064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(" mDestroyed="); writer.println(mDestroyed); 108164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (mNeedMenuInvalidate) { 108264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(prefix); writer.print(" mNeedMenuInvalidate="); 108364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.println(mNeedMenuInvalidate); 108464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 108564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (mNoTransactionsBecause != null) { 108664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.print(prefix); writer.print(" mNoTransactionsBecause="); 108764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius writer.println(mNoTransactionsBecause); 108864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 108964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 109064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 109164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static final Interpolator DECELERATE_QUINT = new DecelerateInterpolator(2.5f); 109264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static final Interpolator DECELERATE_CUBIC = new DecelerateInterpolator(1.5f); 109364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static final Interpolator ACCELERATE_QUINT = new AccelerateInterpolator(2.5f); 109464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static final Interpolator ACCELERATE_CUBIC = new AccelerateInterpolator(1.5f); 109564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 109664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static final int ANIM_DUR = 220; 109764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 109864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static AnimationOrAnimator makeOpenCloseAnimation(Context context, float startScale, 109964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius float endScale, float startAlpha, float endAlpha) { 110064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AnimationSet set = new AnimationSet(false); 110164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius ScaleAnimation scale = new ScaleAnimation(startScale, endScale, startScale, endScale, 110264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f); 110364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius scale.setInterpolator(DECELERATE_QUINT); 110464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius scale.setDuration(ANIM_DUR); 110564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius set.addAnimation(scale); 110664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AlphaAnimation alpha = new AlphaAnimation(startAlpha, endAlpha); 110764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius alpha.setInterpolator(DECELERATE_CUBIC); 110864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius alpha.setDuration(ANIM_DUR); 110964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius set.addAnimation(alpha); 111064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(set); 111164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 111264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 111364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius static AnimationOrAnimator makeFadeAnimation(Context context, float start, float end) { 111464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AlphaAnimation anim = new AlphaAnimation(start, end); 111564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius anim.setInterpolator(DECELERATE_CUBIC); 111664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius anim.setDuration(ANIM_DUR); 111764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(anim); 111864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 111964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 112064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AnimationOrAnimator loadAnimation(Fragment fragment, int transit, boolean enter, 112164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius int transitionStyle) { 112264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius int nextAnim = fragment.getNextAnim(); 112364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius Animation animation = fragment.onCreateAnimation(transit, enter, nextAnim); 112464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (animation != null) { 112564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(animation); 112664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 112764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 112864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius Animator animator = fragment.onCreateAnimator(transit, enter, nextAnim); 112964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (animator != null) { 113064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(animator); 113164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 113264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 113364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (nextAnim != 0) { 113464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius String dir = mHost.getContext().getResources().getResourceTypeName(nextAnim); 113564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius boolean isAnim = "anim".equals(dir); 113664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius boolean successfulLoad = false; 113764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (isAnim) { 113864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // try AnimationUtils first 113964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius try { 114064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius animation = AnimationUtils.loadAnimation(mHost.getContext(), nextAnim); 114164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (animation != null) { 114264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(animation); 114364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 114464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // A null animation may be returned and that is acceptable 114564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius successfulLoad = true; // succeeded in loading animation, but it is null 114664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } catch (NotFoundException e) { 114764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius throw e; // Rethrow it -- the resource should be found if it is provided. 114864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } catch (RuntimeException e) { 114964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Other exceptions can occur when loading an Animator from AnimationUtils. 115064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 115164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 115264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (!successfulLoad) { 115364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // try Animator 115464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius try { 115564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius animator = AnimatorInflater.loadAnimator(mHost.getContext(), nextAnim); 115664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (animator != null) { 115764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(animator); 115864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 115964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } catch (RuntimeException e) { 116064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (isAnim) { 116164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Rethrow it -- we already tried AnimationUtils and it failed. 116264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius throw e; 116364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 116464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Otherwise, it is probably an animation resource 116564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius animation = AnimationUtils.loadAnimation(mHost.getContext(), nextAnim); 116664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (animation != null) { 116764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return new AnimationOrAnimator(animation); 116864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 116964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 117064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 117164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 117264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 117364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (transit == 0) { 117464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return null; 117564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 117664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 117764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius int styleIndex = transitToStyleIndex(transit, enter); 117864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (styleIndex < 0) { 117964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return null; 118064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 118164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 118264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius switch (styleIndex) { 118364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_OPEN_ENTER: 118464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeOpenCloseAnimation(mHost.getContext(), 1.125f, 1.0f, 0, 1); 118564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_OPEN_EXIT: 118664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeOpenCloseAnimation(mHost.getContext(), 1.0f, .975f, 1, 0); 118764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_CLOSE_ENTER: 118864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeOpenCloseAnimation(mHost.getContext(), .975f, 1.0f, 0, 1); 118964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_CLOSE_EXIT: 119064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeOpenCloseAnimation(mHost.getContext(), 1.0f, 1.075f, 1, 0); 119164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_FADE_ENTER: 119264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeFadeAnimation(mHost.getContext(), 0, 1); 119364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius case ANIM_STYLE_FADE_EXIT: 119464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return makeFadeAnimation(mHost.getContext(), 1, 0); 119564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 119664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 119764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // TODO: remove or fix transitionStyle -- it apparently never worked. 119864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (transitionStyle == 0 && mHost.onHasWindowAnimations()) { 119964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius transitionStyle = mHost.onGetWindowAnimations(); 120064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 120164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (transitionStyle == 0) { 120264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return null; 120364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 120464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 120564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //TypedArray attrs = mActivity.obtainStyledAttributes(transitionStyle, 120664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // com.android.internal.R.styleable.FragmentAnimation); 120764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //int anim = attrs.getResourceId(styleIndex, 0); 120864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //attrs.recycle(); 120964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 121064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //if (anim == 0) { 121164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // return null; 121264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //} 121364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 121464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius //return AnimatorInflater.loadAnimator(mActivity, anim); 121564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return null; 121664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 121764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 121864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius public void performPendingDeferredStart(Fragment f) { 121964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mDeferStart) { 122064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (mExecutingActions) { 122164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Wait until we're done executing our pending transactions 122264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius mHavePendingDeferredStart = true; 122364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return; 122464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 122564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius f.mDeferStart = false; 122664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius moveToState(f, mCurState, 0, 0, false); 122764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 122864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 122964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 123064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 123164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Sets the to be animated view on hardware layer during the animation. Note 123264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * that calling this will replace any existing animation listener on the animation 123364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * with a new one, as animations do not support more than one listeners. Therefore, 123464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * animations that already have listeners should do the layer change operations 123564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * in their existing listeners, rather than calling this function. 123664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 123764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius private static void setHWLayerAnimListenerIfAlpha(final View v, AnimationOrAnimator anim) { 123864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (v == null || anim == null) { 12391f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius return; 124064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 124164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (shouldRunOnHWLayer(v, anim)) { 12421f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius if (anim.animator != null) { 124364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius anim.animator.addListener(new AnimatorOnHWLayerIfNeededListener(v)); 12441f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius } else { 124564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AnimationListener originalListener = getAnimationListener(anim.animation); 12461f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius // If there's already a listener set on the animation, we need wrap the new listener 124764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // around the existing listener, so that they will both get animation listener 124864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // callbacks. 12491f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius v.setLayerType(View.LAYER_TYPE_HARDWARE, null); 125064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius anim.animation.setAnimationListener(new AnimateOnHWLayerIfNeededListener(v, 125164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius originalListener)); 125264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 125364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 125464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 125564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 125664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius /** 125764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius * Returns an existing AnimationListener on an Animation or {@code null} if none exists. 125864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius */ 125964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius private static AnimationListener getAnimationListener(Animation animation) { 126064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius AnimationListener originalListener = null; 126164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius try { 126264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (sAnimationListenerField == null) { 126364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius sAnimationListenerField = Animation.class.getDeclaredField("mListener"); 126464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius sAnimationListenerField.setAccessible(true); 126564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 126664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius originalListener = (AnimationListener) sAnimationListenerField.get(animation); 126764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } catch (NoSuchFieldException e) { 126864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius Log.e(TAG, "No field with the name mListener is found in Animation class", e); 126964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } catch (IllegalAccessException e) { 127064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius Log.e(TAG, "Cannot access Animation's mListener field", e); 127164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 127264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return originalListener; 127364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 127464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 127564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius boolean isStateAtLeast(int state) { 127664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius return mCurState >= state; 127764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 127864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius 127964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius @SuppressWarnings("ReferenceEquality") 128064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius void moveToState(Fragment f, int newState, int transit, int transitionStyle, 128164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius boolean keepActive) { 128264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Fragments that are not currently added will sit in the onCreate() state. 128364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if ((!f.mAdded || f.mDetached) && newState > Fragment.CREATED) { 128464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius newState = Fragment.CREATED; 128564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 128664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mRemoving && newState > f.mState) { 128764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mState == Fragment.INITIALIZING && f.isInBackStack()) { 128864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Allow the fragment to be created so that it can be saved later. 128964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius newState = Fragment.CREATED; 129064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } else { 129164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // While removing a fragment, we can't change it to a higher state. 129264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius newState = f.mState; 129364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 129464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 129564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // Defer start if requested; don't allow it to move to STARTED or higher 129664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // if it's not already started. 129764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mDeferStart && f.mState < Fragment.STARTED && newState > Fragment.STOPPED) { 129864950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius newState = Fragment.STOPPED; 129964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 130064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mState <= newState) { 130164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // For fragments that are created from a layout, when restoring from 130264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // state we don't want to allow them to be created until they are 130364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius // being reloaded from the layout. 130464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mFromLayout && !f.mInLayout) { 1305c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius return; 1306c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius } 1307c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius if (f.getAnimatingAway() != null || f.getAnimator() != null) { 1308c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius // The fragment is currently being animated... but! Now we 1309c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius // want to move our state back up. Give up on waiting for the 1310c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius // animation, move to whatever the final state should be once 1311c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius // the animation is done, and then we can proceed from there. 1312c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius f.setAnimatingAway(null); 1313c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius f.setAnimator(null); 1314c3d81dbf035c205ca1baf16b84a41b67eda9ae4aRoshan Pius moveToState(f, f.getStateAfterAnimating(), 0, 0, true); 131566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 131666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne switch (f.mState) { 131766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne case Fragment.INITIALIZING: 131866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (newState > Fragment.INITIALIZING) { 131966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (DEBUG) Log.v(TAG, "moveto CREATED: " + f); 132066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (f.mSavedFragmentState != null) { 132166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.mSavedFragmentState.setClassLoader(mHost.getContext() 132266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne .getClassLoader()); 1323c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius f.mSavedViewState = f.mSavedFragmentState.getSparseParcelableArray( 1324c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius FragmentManagerImpl.VIEW_STATE_TAG); 1325c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius f.mTarget = getFragment(f.mSavedFragmentState, 1326c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius FragmentManagerImpl.TARGET_STATE_TAG); 1327c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius if (f.mTarget != null) { 13284e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar f.mTargetRequestCode = f.mSavedFragmentState.getInt( 13294e45fd9302b4ed943732ad85c0a88c7d7830be1dpkanwar FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0); 1330c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius } 1331c7a4b6706fa09042bb36a64036d86d88eb6e4126Roshan Pius f.mUserVisibleHint = f.mSavedFragmentState.getBoolean( 133266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne FragmentManagerImpl.USER_VISIBLE_HINT_TAG, true); 133366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (!f.mUserVisibleHint) { 133466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.mDeferStart = true; 1335727ba04029935d4faee3c7fce8a5a0ba6ed0a4eaRoshan Pius if (newState > Fragment.STOPPED) { 133666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne newState = Fragment.STOPPED; 133766e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 133866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 133966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 134066e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 134166e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.mHost = mHost; 134266e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.mParentFragment = mParent; 134366e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne f.mFragmentManager = mParent != null 134466e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne ? mParent.mChildFragmentManager : mHost.getFragmentManagerImpl(); 134566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne 134666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne // If we have a target fragment, push it along to at least CREATED 1347f50550926a7bddc24adf822876f35812d7d8c7beRoshan Pius // so that this one can rely on it as an initialized dependency. 134866e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (f.mTarget != null) { 134966e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (mActive.get(f.mTarget.mIndex) != f.mTarget) { 135064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius throw new IllegalStateException("Fragment " + f 135164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius + " declared target fragment " + f.mTarget 135264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius + " that does not belong to this FragmentManager!"); 135364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 135464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (f.mTarget.mState < Fragment.CREATED) { 135564950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius moveToState(f.mTarget, Fragment.CREATED, 0, 0, true); 135664950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 135764950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius } 13581f5dee32716a2709ca2e1e491cbc2f09ca35a2faRoshan Pius 135964950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius dispatchOnFragmentPreAttached(f, mHost.getContext(), false); 136064950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius f.mCalled = false; 136164950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius f.onAttach(mHost.getContext()); 136264950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius if (!f.mCalled) { 136364950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius throw new SuperNotCalledException("Fragment " + f 136464950d46f5469e5e6ce32ccc81a1f751c40f4202Roshan Pius + " did not call through to super.onAttach()"); 136566e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne } 136666e9f4ab597136cbf4accadb8e009fc68ff071a7Glen Kuhne if (f.mParentFragment == null) { 1367 mHost.onAttachFragment(f); 1368 } else { 1369 f.mParentFragment.onAttachFragment(f); 1370 } 1371 dispatchOnFragmentAttached(f, mHost.getContext(), false); 1372 1373 if (!f.mRetaining) { 1374 dispatchOnFragmentPreCreated(f, f.mSavedFragmentState, false); 1375 f.performCreate(f.mSavedFragmentState); 1376 dispatchOnFragmentCreated(f, f.mSavedFragmentState, false); 1377 } else { 1378 f.restoreChildFragmentState(f.mSavedFragmentState); 1379 f.mState = Fragment.CREATED; 1380 } 1381 f.mRetaining = false; 1382 } 1383 // fall through 1384 case Fragment.CREATED: 1385 // This is outside the if statement below on purpose; we want this to run 1386 // even if we do a moveToState from CREATED => *, CREATED => CREATED, and 1387 // * => CREATED as part of the case fallthrough above. 1388 ensureInflatedFragmentView(f); 1389 1390 if (newState > Fragment.CREATED) { 1391 if (DEBUG) Log.v(TAG, "moveto ACTIVITY_CREATED: " + f); 1392 if (!f.mFromLayout) { 1393 ViewGroup container = null; 1394 if (f.mContainerId != 0) { 1395 if (f.mContainerId == View.NO_ID) { 1396 throwException(new IllegalArgumentException( 1397 "Cannot create fragment " 1398 + f 1399 + " for a container view with no id")); 1400 } 1401 container = (ViewGroup) mContainer.onFindViewById(f.mContainerId); 1402 if (container == null && !f.mRestored) { 1403 String resName; 1404 try { 1405 resName = f.getResources().getResourceName(f.mContainerId); 1406 } catch (NotFoundException e) { 1407 resName = "unknown"; 1408 } 1409 throwException(new IllegalArgumentException( 1410 "No view found for id 0x" 1411 + Integer.toHexString(f.mContainerId) + " (" 1412 + resName 1413 + ") for fragment " + f)); 1414 } 1415 } 1416 f.mContainer = container; 1417 f.mView = f.performCreateView(f.performGetLayoutInflater( 1418 f.mSavedFragmentState), container, f.mSavedFragmentState); 1419 if (f.mView != null) { 1420 f.mInnerView = f.mView; 1421 f.mView.setSaveFromParentEnabled(false); 1422 if (container != null) { 1423 container.addView(f.mView); 1424 } 1425 if (f.mHidden) { 1426 f.mView.setVisibility(View.GONE); 1427 } 1428 f.onViewCreated(f.mView, f.mSavedFragmentState); 1429 dispatchOnFragmentViewCreated(f, f.mView, f.mSavedFragmentState, 1430 false); 1431 // Only animate the view if it is visible. This is done after 1432 // dispatchOnFragmentViewCreated in case visibility is changed 1433 f.mIsNewlyAdded = (f.mView.getVisibility() == View.VISIBLE) 1434 && f.mContainer != null; 1435 } else { 1436 f.mInnerView = null; 1437 } 1438 } 1439 1440 f.performActivityCreated(f.mSavedFragmentState); 1441 dispatchOnFragmentActivityCreated(f, f.mSavedFragmentState, false); 1442 if (f.mView != null) { 1443 f.restoreViewState(f.mSavedFragmentState); 1444 } 1445 f.mSavedFragmentState = null; 1446 } 1447 // fall through 1448 case Fragment.ACTIVITY_CREATED: 1449 if (newState > Fragment.ACTIVITY_CREATED) { 1450 f.mState = Fragment.STOPPED; 1451 } 1452 // fall through 1453 case Fragment.STOPPED: 1454 if (newState > Fragment.STOPPED) { 1455 if (DEBUG) Log.v(TAG, "moveto STARTED: " + f); 1456 f.performStart(); 1457 dispatchOnFragmentStarted(f, false); 1458 } 1459 // fall through 1460 case Fragment.STARTED: 1461 if (newState > Fragment.STARTED) { 1462 if (DEBUG) Log.v(TAG, "moveto RESUMED: " + f); 1463 f.performResume(); 1464 dispatchOnFragmentResumed(f, false); 1465 f.mSavedFragmentState = null; 1466 f.mSavedViewState = null; 1467 } 1468 } 1469 } else if (f.mState > newState) { 1470 switch (f.mState) { 1471 case Fragment.RESUMED: 1472 if (newState < Fragment.RESUMED) { 1473 if (DEBUG) Log.v(TAG, "movefrom RESUMED: " + f); 1474 f.performPause(); 1475 dispatchOnFragmentPaused(f, false); 1476 } 1477 // fall through 1478 case Fragment.STARTED: 1479 if (newState < Fragment.STARTED) { 1480 if (DEBUG) Log.v(TAG, "movefrom STARTED: " + f); 1481 f.performStop(); 1482 dispatchOnFragmentStopped(f, false); 1483 } 1484 // fall through 1485 case Fragment.STOPPED: 1486 if (newState < Fragment.STOPPED) { 1487 if (DEBUG) Log.v(TAG, "movefrom STOPPED: " + f); 1488 f.performReallyStop(); 1489 } 1490 // fall through 1491 case Fragment.ACTIVITY_CREATED: 1492 if (newState < Fragment.ACTIVITY_CREATED) { 1493 if (DEBUG) Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f); 1494 if (f.mView != null) { 1495 // Need to save the current view state if not 1496 // done already. 1497 if (mHost.onShouldSaveFragmentState(f) && f.mSavedViewState == null) { 1498 saveFragmentViewState(f); 1499 } 1500 } 1501 f.performDestroyView(); 1502 dispatchOnFragmentViewDestroyed(f, false); 1503 if (f.mView != null && f.mContainer != null) { 1504 // Stop any current animations: 1505 f.mView.clearAnimation(); 1506 f.mContainer.endViewTransition(f.mView); 1507 AnimationOrAnimator anim = null; 1508 if (mCurState > Fragment.INITIALIZING && !mDestroyed 1509 && f.mView.getVisibility() == View.VISIBLE 1510 && f.mPostponedAlpha >= 0) { 1511 anim = loadAnimation(f, transit, false, 1512 transitionStyle); 1513 } 1514 f.mPostponedAlpha = 0; 1515 if (anim != null) { 1516 animateRemoveFragment(f, anim, newState); 1517 } 1518 f.mContainer.removeView(f.mView); 1519 } 1520 f.mContainer = null; 1521 f.mView = null; 1522 f.mInnerView = null; 1523 f.mInLayout = false; 1524 } 1525 // fall through 1526 case Fragment.CREATED: 1527 if (newState < Fragment.CREATED) { 1528 if (mDestroyed) { 1529 // The fragment's containing activity is 1530 // being destroyed, but this fragment is 1531 // currently animating away. Stop the 1532 // animation right now -- it is not needed, 1533 // and we can't wait any more on destroying 1534 // the fragment. 1535 if (f.getAnimatingAway() != null) { 1536 View v = f.getAnimatingAway(); 1537 f.setAnimatingAway(null); 1538 v.clearAnimation(); 1539 } else if (f.getAnimator() != null) { 1540 Animator animator = f.getAnimator(); 1541 f.setAnimator(null); 1542 animator.cancel(); 1543 } 1544 } 1545 if (f.getAnimatingAway() != null || f.getAnimator() != null) { 1546 // We are waiting for the fragment's view to finish 1547 // animating away. Just make a note of the state 1548 // the fragment now should move to once the animation 1549 // is done. 1550 f.setStateAfterAnimating(newState); 1551 newState = Fragment.CREATED; 1552 } else { 1553 if (DEBUG) Log.v(TAG, "movefrom CREATED: " + f); 1554 if (!f.mRetaining) { 1555 f.performDestroy(); 1556 dispatchOnFragmentDestroyed(f, false); 1557 } else { 1558 f.mState = Fragment.INITIALIZING; 1559 } 1560 1561 f.performDetach(); 1562 dispatchOnFragmentDetached(f, false); 1563 if (!keepActive) { 1564 if (!f.mRetaining) { 1565 makeInactive(f); 1566 } else { 1567 f.mHost = null; 1568 f.mParentFragment = null; 1569 f.mFragmentManager = null; 1570 } 1571 } 1572 } 1573 } 1574 } 1575 } 1576 1577 if (f.mState != newState) { 1578 Log.w(TAG, "moveToState: Fragment state for " + f + " not updated inline; " 1579 + "expected state " + newState + " found " + f.mState); 1580 f.mState = newState; 1581 } 1582 } 1583 1584 /** 1585 * Animates the removal of a fragment with the given animator or animation. After animating, 1586 * the fragment's view will be removed from the hierarchy. 1587 * 1588 * @param fragment The fragment to animate out 1589 * @param anim The animator or animation to run on the fragment's view 1590 * @param newState The final state after animating. 1591 */ 1592 private void animateRemoveFragment(@NonNull final Fragment fragment, 1593 @NonNull AnimationOrAnimator anim, final int newState) { 1594 final View viewToAnimate = fragment.mView; 1595 fragment.setStateAfterAnimating(newState); 1596 if (anim.animation != null) { 1597 Animation animation = anim.animation; 1598 fragment.setAnimatingAway(fragment.mView); 1599 AnimationListener listener = getAnimationListener(animation); 1600 animation.setAnimationListener(new AnimationListenerWrapper(listener) { 1601 @Override 1602 public void onAnimationEnd(Animation animation) { 1603 super.onAnimationEnd(animation); 1604 if (fragment.getAnimatingAway() != null) { 1605 fragment.setAnimatingAway(null); 1606 moveToState(fragment, fragment.getStateAfterAnimating(), 0, 0, false); 1607 } 1608 } 1609 }); 1610 setHWLayerAnimListenerIfAlpha(viewToAnimate, anim); 1611 fragment.mView.startAnimation(animation); 1612 } else { 1613 final Animator animator = anim.animator; 1614 fragment.setAnimator(anim.animator); 1615 final ViewGroup container = fragment.mContainer; 1616 if (container != null) { 1617 container.startViewTransition(viewToAnimate); 1618 } 1619 animator.addListener(new AnimatorListenerAdapter() { 1620 @Override 1621 public void onAnimationEnd(Animator anim) { 1622 if (container != null) { 1623 container.endViewTransition(viewToAnimate); 1624 } 1625 if (fragment.getAnimator() != null) { 1626 fragment.setAnimator(null); 1627 moveToState(fragment, fragment.getStateAfterAnimating(), 0, 0, false); 1628 } 1629 } 1630 }); 1631 animator.setTarget(fragment.mView); 1632 setHWLayerAnimListenerIfAlpha(fragment.mView, anim); 1633 animator.start(); 1634 } 1635 } 1636 1637 void moveToState(Fragment f) { 1638 moveToState(f, mCurState, 0, 0, false); 1639 } 1640 1641 void ensureInflatedFragmentView(Fragment f) { 1642 if (f.mFromLayout && !f.mPerformedCreateView) { 1643 f.mView = f.performCreateView(f.performGetLayoutInflater( 1644 f.mSavedFragmentState), null, f.mSavedFragmentState); 1645 if (f.mView != null) { 1646 f.mInnerView = f.mView; 1647 f.mView.setSaveFromParentEnabled(false); 1648 if (f.mHidden) f.mView.setVisibility(View.GONE); 1649 f.onViewCreated(f.mView, f.mSavedFragmentState); 1650 dispatchOnFragmentViewCreated(f, f.mView, f.mSavedFragmentState, false); 1651 } else { 1652 f.mInnerView = null; 1653 } 1654 } 1655 } 1656 1657 /** 1658 * Fragments that have been shown or hidden don't have their visibility changed or 1659 * animations run during the {@link #showFragment(Fragment)} or {@link #hideFragment(Fragment)} 1660 * calls. After fragments are brought to their final state in 1661 * {@link #moveFragmentToExpectedState(Fragment)} the fragments that have been shown or 1662 * hidden must have their visibility changed and their animations started here. 1663 * 1664 * @param fragment The fragment with mHiddenChanged = true that should change its View's 1665 * visibility and start the show or hide animation. 1666 */ 1667 void completeShowHideFragment(final Fragment fragment) { 1668 if (fragment.mView != null) { 1669 AnimationOrAnimator anim = loadAnimation(fragment, fragment.getNextTransition(), 1670 !fragment.mHidden, fragment.getNextTransitionStyle()); 1671 if (anim != null && anim.animator != null) { 1672 anim.animator.setTarget(fragment.mView); 1673 if (fragment.mHidden) { 1674 if (fragment.isHideReplaced()) { 1675 fragment.setHideReplaced(false); 1676 } else { 1677 final ViewGroup container = fragment.mContainer; 1678 final View animatingView = fragment.mView; 1679 container.startViewTransition(animatingView); 1680 // Delay the actual hide operation until the animation finishes, 1681 // otherwise the fragment will just immediately disappear 1682 anim.animator.addListener(new AnimatorListenerAdapter() { 1683 @Override 1684 public void onAnimationEnd(Animator animation) { 1685 container.endViewTransition(animatingView); 1686 animation.removeListener(this); 1687 if (fragment.mView != null) { 1688 fragment.mView.setVisibility(View.GONE); 1689 } 1690 } 1691 }); 1692 } 1693 } else { 1694 fragment.mView.setVisibility(View.VISIBLE); 1695 } 1696 setHWLayerAnimListenerIfAlpha(fragment.mView, anim); 1697 anim.animator.start(); 1698 } else { 1699 if (anim != null) { 1700 setHWLayerAnimListenerIfAlpha(fragment.mView, anim); 1701 fragment.mView.startAnimation(anim.animation); 1702 anim.animation.start(); 1703 } 1704 final int visibility = fragment.mHidden && !fragment.isHideReplaced() 1705 ? View.GONE 1706 : View.VISIBLE; 1707 fragment.mView.setVisibility(visibility); 1708 if (fragment.isHideReplaced()) { 1709 fragment.setHideReplaced(false); 1710 } 1711 } 1712 } 1713 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1714 mNeedMenuInvalidate = true; 1715 } 1716 fragment.mHiddenChanged = false; 1717 fragment.onHiddenChanged(fragment.mHidden); 1718 } 1719 1720 /** 1721 * Moves a fragment to its expected final state or the fragment manager's state, depending 1722 * on whether the fragment manager's state is raised properly. 1723 * 1724 * @param f The fragment to change. 1725 */ 1726 void moveFragmentToExpectedState(Fragment f) { 1727 if (f == null) { 1728 return; 1729 } 1730 int nextState = mCurState; 1731 if (f.mRemoving) { 1732 if (f.isInBackStack()) { 1733 nextState = Math.min(nextState, Fragment.CREATED); 1734 } else { 1735 nextState = Math.min(nextState, Fragment.INITIALIZING); 1736 } 1737 } 1738 moveToState(f, nextState, f.getNextTransition(), f.getNextTransitionStyle(), false); 1739 1740 if (f.mView != null) { 1741 // Move the view if it is out of order 1742 Fragment underFragment = findFragmentUnder(f); 1743 if (underFragment != null) { 1744 final View underView = underFragment.mView; 1745 // make sure this fragment is in the right order. 1746 final ViewGroup container = f.mContainer; 1747 int underIndex = container.indexOfChild(underView); 1748 int viewIndex = container.indexOfChild(f.mView); 1749 if (viewIndex < underIndex) { 1750 container.removeViewAt(viewIndex); 1751 container.addView(f.mView, underIndex); 1752 } 1753 } 1754 if (f.mIsNewlyAdded && f.mContainer != null) { 1755 // Make it visible and run the animations 1756 if (f.mPostponedAlpha > 0f) { 1757 f.mView.setAlpha(f.mPostponedAlpha); 1758 } 1759 f.mPostponedAlpha = 0f; 1760 f.mIsNewlyAdded = false; 1761 // run animations: 1762 AnimationOrAnimator anim = loadAnimation(f, f.getNextTransition(), true, 1763 f.getNextTransitionStyle()); 1764 if (anim != null) { 1765 setHWLayerAnimListenerIfAlpha(f.mView, anim); 1766 if (anim.animation != null) { 1767 f.mView.startAnimation(anim.animation); 1768 } else { 1769 anim.animator.setTarget(f.mView); 1770 anim.animator.start(); 1771 } 1772 } 1773 } 1774 } 1775 if (f.mHiddenChanged) { 1776 completeShowHideFragment(f); 1777 } 1778 } 1779 1780 /** 1781 * Changes the state of the fragment manager to {@code newState}. If the fragment manager 1782 * changes state or {@code always} is {@code true}, any fragments within it have their 1783 * states updated as well. 1784 * 1785 * @param newState The new state for the fragment manager 1786 * @param always If {@code true}, all fragments update their state, even 1787 * if {@code newState} matches the current fragment manager's state. 1788 */ 1789 void moveToState(int newState, boolean always) { 1790 if (mHost == null && newState != Fragment.INITIALIZING) { 1791 throw new IllegalStateException("No activity"); 1792 } 1793 1794 if (!always && newState == mCurState) { 1795 return; 1796 } 1797 1798 mCurState = newState; 1799 1800 if (mActive != null) { 1801 boolean loadersRunning = false; 1802 1803 // Must add them in the proper order. mActive fragments may be out of order 1804 if (mAdded != null) { 1805 final int numAdded = mAdded.size(); 1806 for (int i = 0; i < numAdded; i++) { 1807 Fragment f = mAdded.get(i); 1808 moveFragmentToExpectedState(f); 1809 if (f.mLoaderManager != null) { 1810 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1811 } 1812 } 1813 } 1814 1815 // Now iterate through all active fragments. These will include those that are removed 1816 // and detached. 1817 final int numActive = mActive.size(); 1818 for (int i = 0; i < numActive; i++) { 1819 Fragment f = mActive.valueAt(i); 1820 if (f != null && (f.mRemoving || f.mDetached) && !f.mIsNewlyAdded) { 1821 moveFragmentToExpectedState(f); 1822 if (f.mLoaderManager != null) { 1823 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1824 } 1825 } 1826 } 1827 1828 if (!loadersRunning) { 1829 startPendingDeferredFragments(); 1830 } 1831 1832 if (mNeedMenuInvalidate && mHost != null && mCurState == Fragment.RESUMED) { 1833 mHost.onSupportInvalidateOptionsMenu(); 1834 mNeedMenuInvalidate = false; 1835 } 1836 } 1837 } 1838 1839 void startPendingDeferredFragments() { 1840 if (mActive == null) return; 1841 1842 for (int i=0; i<mActive.size(); i++) { 1843 Fragment f = mActive.valueAt(i); 1844 if (f != null) { 1845 performPendingDeferredStart(f); 1846 } 1847 } 1848 } 1849 1850 void makeActive(Fragment f) { 1851 if (f.mIndex >= 0) { 1852 return; 1853 } 1854 1855 f.setIndex(mNextFragmentIndex++, mParent); 1856 if (mActive == null) { 1857 mActive = new SparseArray<>(); 1858 } 1859 mActive.put(f.mIndex, f); 1860 if (DEBUG) Log.v(TAG, "Allocated fragment index " + f); 1861 } 1862 1863 void makeInactive(Fragment f) { 1864 if (f.mIndex < 0) { 1865 return; 1866 } 1867 1868 if (DEBUG) Log.v(TAG, "Freeing fragment index " + f); 1869 // Don't remove yet. That happens in burpActive(). This prevents 1870 // concurrent modification while iterating over mActive 1871 mActive.put(f.mIndex, null); 1872 1873 mHost.inactivateFragment(f.mWho); 1874 f.initState(); 1875 } 1876 1877 public void addFragment(Fragment fragment, boolean moveToStateNow) { 1878 if (mAdded == null) { 1879 mAdded = new ArrayList<Fragment>(); 1880 } 1881 if (DEBUG) Log.v(TAG, "add: " + fragment); 1882 makeActive(fragment); 1883 if (!fragment.mDetached) { 1884 if (mAdded.contains(fragment)) { 1885 throw new IllegalStateException("Fragment already added: " + fragment); 1886 } 1887 synchronized (mAdded) { 1888 mAdded.add(fragment); 1889 } 1890 fragment.mAdded = true; 1891 fragment.mRemoving = false; 1892 if (fragment.mView == null) { 1893 fragment.mHiddenChanged = false; 1894 } 1895 if (fragment.mHasMenu && fragment.mMenuVisible) { 1896 mNeedMenuInvalidate = true; 1897 } 1898 if (moveToStateNow) { 1899 moveToState(fragment); 1900 } 1901 } 1902 } 1903 1904 public void removeFragment(Fragment fragment) { 1905 if (DEBUG) Log.v(TAG, "remove: " + fragment + " nesting=" + fragment.mBackStackNesting); 1906 final boolean inactive = !fragment.isInBackStack(); 1907 if (!fragment.mDetached || inactive) { 1908 if (mAdded != null) { 1909 synchronized (mAdded) { 1910 mAdded.remove(fragment); 1911 } 1912 } 1913 if (fragment.mHasMenu && fragment.mMenuVisible) { 1914 mNeedMenuInvalidate = true; 1915 } 1916 fragment.mAdded = false; 1917 fragment.mRemoving = true; 1918 } 1919 } 1920 1921 /** 1922 * Marks a fragment as hidden to be later animated in with 1923 * {@link #completeShowHideFragment(Fragment)}. 1924 * 1925 * @param fragment The fragment to be shown. 1926 */ 1927 public void hideFragment(Fragment fragment) { 1928 if (DEBUG) Log.v(TAG, "hide: " + fragment); 1929 if (!fragment.mHidden) { 1930 fragment.mHidden = true; 1931 // Toggle hidden changed so that if a fragment goes through show/hide/show 1932 // it doesn't go through the animation. 1933 fragment.mHiddenChanged = !fragment.mHiddenChanged; 1934 } 1935 } 1936 1937 /** 1938 * Marks a fragment as shown to be later animated in with 1939 * {@link #completeShowHideFragment(Fragment)}. 1940 * 1941 * @param fragment The fragment to be shown. 1942 */ 1943 public void showFragment(Fragment fragment) { 1944 if (DEBUG) Log.v(TAG, "show: " + fragment); 1945 if (fragment.mHidden) { 1946 fragment.mHidden = false; 1947 // Toggle hidden changed so that if a fragment goes through show/hide/show 1948 // it doesn't go through the animation. 1949 fragment.mHiddenChanged = !fragment.mHiddenChanged; 1950 } 1951 } 1952 1953 public void detachFragment(Fragment fragment) { 1954 if (DEBUG) Log.v(TAG, "detach: " + fragment); 1955 if (!fragment.mDetached) { 1956 fragment.mDetached = true; 1957 if (fragment.mAdded) { 1958 // We are not already in back stack, so need to remove the fragment. 1959 if (mAdded != null) { 1960 if (DEBUG) Log.v(TAG, "remove from detach: " + fragment); 1961 synchronized (mAdded) { 1962 mAdded.remove(fragment); 1963 } 1964 } 1965 if (fragment.mHasMenu && fragment.mMenuVisible) { 1966 mNeedMenuInvalidate = true; 1967 } 1968 fragment.mAdded = false; 1969 } 1970 } 1971 } 1972 1973 public void attachFragment(Fragment fragment) { 1974 if (DEBUG) Log.v(TAG, "attach: " + fragment); 1975 if (fragment.mDetached) { 1976 fragment.mDetached = false; 1977 if (!fragment.mAdded) { 1978 if (mAdded == null) { 1979 mAdded = new ArrayList<Fragment>(); 1980 } 1981 if (mAdded.contains(fragment)) { 1982 throw new IllegalStateException("Fragment already added: " + fragment); 1983 } 1984 if (DEBUG) Log.v(TAG, "add from attach: " + fragment); 1985 synchronized (mAdded) { 1986 mAdded.add(fragment); 1987 } 1988 fragment.mAdded = true; 1989 if (fragment.mHasMenu && fragment.mMenuVisible) { 1990 mNeedMenuInvalidate = true; 1991 } 1992 } 1993 } 1994 } 1995 1996 @Override 1997 public Fragment findFragmentById(int id) { 1998 if (mAdded != null) { 1999 // First look through added fragments. 2000 for (int i=mAdded.size()-1; i>=0; i--) { 2001 Fragment f = mAdded.get(i); 2002 if (f != null && f.mFragmentId == id) { 2003 return f; 2004 } 2005 } 2006 } 2007 if (mActive != null) { 2008 // Now for any known fragment. 2009 for (int i=mActive.size()-1; i>=0; i--) { 2010 Fragment f = mActive.valueAt(i); 2011 if (f != null && f.mFragmentId == id) { 2012 return f; 2013 } 2014 } 2015 } 2016 return null; 2017 } 2018 2019 @Override 2020 public Fragment findFragmentByTag(String tag) { 2021 if (mAdded != null && tag != null) { 2022 // First look through added fragments. 2023 for (int i=mAdded.size()-1; i>=0; i--) { 2024 Fragment f = mAdded.get(i); 2025 if (f != null && tag.equals(f.mTag)) { 2026 return f; 2027 } 2028 } 2029 } 2030 if (mActive != null && tag != null) { 2031 // Now for any known fragment. 2032 for (int i=mActive.size()-1; i>=0; i--) { 2033 Fragment f = mActive.valueAt(i); 2034 if (f != null && tag.equals(f.mTag)) { 2035 return f; 2036 } 2037 } 2038 } 2039 return null; 2040 } 2041 2042 public Fragment findFragmentByWho(String who) { 2043 if (mActive != null && who != null) { 2044 for (int i=mActive.size()-1; i>=0; i--) { 2045 Fragment f = mActive.valueAt(i); 2046 if (f != null && (f=f.findFragmentByWho(who)) != null) { 2047 return f; 2048 } 2049 } 2050 } 2051 return null; 2052 } 2053 2054 private void checkStateLoss() { 2055 if (mStateSaved) { 2056 throw new IllegalStateException( 2057 "Can not perform this action after onSaveInstanceState"); 2058 } 2059 if (mNoTransactionsBecause != null) { 2060 throw new IllegalStateException( 2061 "Can not perform this action inside of " + mNoTransactionsBecause); 2062 } 2063 } 2064 2065 @Override 2066 public boolean isStateSaved() { 2067 return mStateSaved; 2068 } 2069 2070 /** 2071 * Adds an action to the queue of pending actions. 2072 * 2073 * @param action the action to add 2074 * @param allowStateLoss whether to allow loss of state information 2075 * @throws IllegalStateException if the activity has been destroyed 2076 */ 2077 public void enqueueAction(OpGenerator action, boolean allowStateLoss) { 2078 if (!allowStateLoss) { 2079 checkStateLoss(); 2080 } 2081 synchronized (this) { 2082 if (mDestroyed || mHost == null) { 2083 if (allowStateLoss) { 2084 // This FragmentManager isn't attached, so drop the entire transaction. 2085 return; 2086 } 2087 throw new IllegalStateException("Activity has been destroyed"); 2088 } 2089 if (mPendingActions == null) { 2090 mPendingActions = new ArrayList<>(); 2091 } 2092 mPendingActions.add(action); 2093 scheduleCommit(); 2094 } 2095 } 2096 2097 /** 2098 * Schedules the execution when one hasn't been scheduled already. This should happen 2099 * the first time {@link #enqueueAction(OpGenerator, boolean)} is called or when 2100 * a postponed transaction has been started with 2101 * {@link Fragment#startPostponedEnterTransition()} 2102 */ 2103 private void scheduleCommit() { 2104 synchronized (this) { 2105 boolean postponeReady = 2106 mPostponedTransactions != null && !mPostponedTransactions.isEmpty(); 2107 boolean pendingReady = mPendingActions != null && mPendingActions.size() == 1; 2108 if (postponeReady || pendingReady) { 2109 mHost.getHandler().removeCallbacks(mExecCommit); 2110 mHost.getHandler().post(mExecCommit); 2111 } 2112 } 2113 } 2114 2115 public int allocBackStackIndex(BackStackRecord bse) { 2116 synchronized (this) { 2117 if (mAvailBackStackIndices == null || mAvailBackStackIndices.size() <= 0) { 2118 if (mBackStackIndices == null) { 2119 mBackStackIndices = new ArrayList<BackStackRecord>(); 2120 } 2121 int index = mBackStackIndices.size(); 2122 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 2123 mBackStackIndices.add(bse); 2124 return index; 2125 2126 } else { 2127 int index = mAvailBackStackIndices.remove(mAvailBackStackIndices.size()-1); 2128 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 2129 mBackStackIndices.set(index, bse); 2130 return index; 2131 } 2132 } 2133 } 2134 2135 public void setBackStackIndex(int index, BackStackRecord bse) { 2136 synchronized (this) { 2137 if (mBackStackIndices == null) { 2138 mBackStackIndices = new ArrayList<BackStackRecord>(); 2139 } 2140 int N = mBackStackIndices.size(); 2141 if (index < N) { 2142 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 2143 mBackStackIndices.set(index, bse); 2144 } else { 2145 while (N < index) { 2146 mBackStackIndices.add(null); 2147 if (mAvailBackStackIndices == null) { 2148 mAvailBackStackIndices = new ArrayList<Integer>(); 2149 } 2150 if (DEBUG) Log.v(TAG, "Adding available back stack index " + N); 2151 mAvailBackStackIndices.add(N); 2152 N++; 2153 } 2154 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 2155 mBackStackIndices.add(bse); 2156 } 2157 } 2158 } 2159 2160 public void freeBackStackIndex(int index) { 2161 synchronized (this) { 2162 mBackStackIndices.set(index, null); 2163 if (mAvailBackStackIndices == null) { 2164 mAvailBackStackIndices = new ArrayList<Integer>(); 2165 } 2166 if (DEBUG) Log.v(TAG, "Freeing back stack index " + index); 2167 mAvailBackStackIndices.add(index); 2168 } 2169 } 2170 2171 /** 2172 * Broken out from exec*, this prepares for gathering and executing operations. 2173 * 2174 * @param allowStateLoss true if state loss should be ignored or false if it should be 2175 * checked. 2176 */ 2177 private void ensureExecReady(boolean allowStateLoss) { 2178 if (mExecutingActions) { 2179 throw new IllegalStateException("FragmentManager is already executing transactions"); 2180 } 2181 2182 if (Looper.myLooper() != mHost.getHandler().getLooper()) { 2183 throw new IllegalStateException("Must be called from main thread of fragment host"); 2184 } 2185 2186 if (!allowStateLoss) { 2187 checkStateLoss(); 2188 } 2189 2190 if (mTmpRecords == null) { 2191 mTmpRecords = new ArrayList<>(); 2192 mTmpIsPop = new ArrayList<>(); 2193 } 2194 mExecutingActions = true; 2195 try { 2196 executePostponedTransaction(null, null); 2197 } finally { 2198 mExecutingActions = false; 2199 } 2200 } 2201 2202 public void execSingleAction(OpGenerator action, boolean allowStateLoss) { 2203 if (allowStateLoss && (mHost == null || mDestroyed)) { 2204 // This FragmentManager isn't attached, so drop the entire transaction. 2205 return; 2206 } 2207 ensureExecReady(allowStateLoss); 2208 if (action.generateOps(mTmpRecords, mTmpIsPop)) { 2209 mExecutingActions = true; 2210 try { 2211 removeRedundantOperationsAndExecute(mTmpRecords, mTmpIsPop); 2212 } finally { 2213 cleanupExec(); 2214 } 2215 } 2216 2217 doPendingDeferredStart(); 2218 burpActive(); 2219 } 2220 2221 /** 2222 * Broken out of exec*, this cleans up the mExecutingActions and the temporary structures 2223 * used in executing operations. 2224 */ 2225 private void cleanupExec() { 2226 mExecutingActions = false; 2227 mTmpIsPop.clear(); 2228 mTmpRecords.clear(); 2229 } 2230 2231 /** 2232 * Only call from main thread! 2233 */ 2234 public boolean execPendingActions() { 2235 ensureExecReady(true); 2236 2237 boolean didSomething = false; 2238 while (generateOpsForPendingActions(mTmpRecords, mTmpIsPop)) { 2239 mExecutingActions = true; 2240 try { 2241 removeRedundantOperationsAndExecute(mTmpRecords, mTmpIsPop); 2242 } finally { 2243 cleanupExec(); 2244 } 2245 didSomething = true; 2246 } 2247 2248 doPendingDeferredStart(); 2249 burpActive(); 2250 2251 return didSomething; 2252 } 2253 2254 /** 2255 * Complete the execution of transactions that have previously been postponed, but are 2256 * now ready. 2257 */ 2258 private void executePostponedTransaction(ArrayList<BackStackRecord> records, 2259 ArrayList<Boolean> isRecordPop) { 2260 int numPostponed = mPostponedTransactions == null ? 0 : mPostponedTransactions.size(); 2261 for (int i = 0; i < numPostponed; i++) { 2262 StartEnterTransitionListener listener = mPostponedTransactions.get(i); 2263 if (records != null && !listener.mIsBack) { 2264 int index = records.indexOf(listener.mRecord); 2265 if (index != -1 && isRecordPop.get(index)) { 2266 listener.cancelTransaction(); 2267 continue; 2268 } 2269 } 2270 if (listener.isReady() || (records != null 2271 && listener.mRecord.interactsWith(records, 0, records.size()))) { 2272 mPostponedTransactions.remove(i); 2273 i--; 2274 numPostponed--; 2275 int index; 2276 if (records != null && !listener.mIsBack 2277 && (index = records.indexOf(listener.mRecord)) != -1 2278 && isRecordPop.get(index)) { 2279 // This is popping a postponed transaction 2280 listener.cancelTransaction(); 2281 } else { 2282 listener.completeTransaction(); 2283 } 2284 } 2285 } 2286 } 2287 2288 /** 2289 * Remove redundant BackStackRecord operations and executes them. This method merges operations 2290 * of proximate records that allow reordering. See 2291 * {@link FragmentTransaction#setReorderingAllowed(boolean)}. 2292 * <p> 2293 * For example, a transaction that adds to the back stack and then another that pops that 2294 * back stack record will be optimized to remove the unnecessary operation. 2295 * <p> 2296 * Likewise, two transactions committed that are executed at the same time will be optimized 2297 * to remove the redundant operations as well as two pop operations executed together. 2298 * 2299 * @param records The records pending execution 2300 * @param isRecordPop The direction that these records are being run. 2301 */ 2302 private void removeRedundantOperationsAndExecute(ArrayList<BackStackRecord> records, 2303 ArrayList<Boolean> isRecordPop) { 2304 if (records == null || records.isEmpty()) { 2305 return; 2306 } 2307 2308 if (isRecordPop == null || records.size() != isRecordPop.size()) { 2309 throw new IllegalStateException("Internal error with the back stack records"); 2310 } 2311 2312 // Force start of any postponed transactions that interact with scheduled transactions: 2313 executePostponedTransaction(records, isRecordPop); 2314 2315 final int numRecords = records.size(); 2316 int startIndex = 0; 2317 for (int recordNum = 0; recordNum < numRecords; recordNum++) { 2318 final boolean canReorder = records.get(recordNum).mReorderingAllowed; 2319 if (!canReorder) { 2320 // execute all previous transactions 2321 if (startIndex != recordNum) { 2322 executeOpsTogether(records, isRecordPop, startIndex, recordNum); 2323 } 2324 // execute all pop operations that don't allow reordering together or 2325 // one add operation 2326 int reorderingEnd = recordNum + 1; 2327 if (isRecordPop.get(recordNum)) { 2328 while (reorderingEnd < numRecords 2329 && isRecordPop.get(reorderingEnd) 2330 && !records.get(reorderingEnd).mReorderingAllowed) { 2331 reorderingEnd++; 2332 } 2333 } 2334 executeOpsTogether(records, isRecordPop, recordNum, reorderingEnd); 2335 startIndex = reorderingEnd; 2336 recordNum = reorderingEnd - 1; 2337 } 2338 } 2339 if (startIndex != numRecords) { 2340 executeOpsTogether(records, isRecordPop, startIndex, numRecords); 2341 } 2342 } 2343 2344 /** 2345 * Executes a subset of a list of BackStackRecords, all of which either allow reordering or 2346 * do not allow ordering. 2347 * @param records A list of BackStackRecords that are to be executed 2348 * @param isRecordPop The direction that these records are being run. 2349 * @param startIndex The index of the first record in <code>records</code> to be executed 2350 * @param endIndex One more than the final record index in <code>records</code> to executed. 2351 */ 2352 private void executeOpsTogether(ArrayList<BackStackRecord> records, 2353 ArrayList<Boolean> isRecordPop, int startIndex, int endIndex) { 2354 final boolean allowReordering = records.get(startIndex).mReorderingAllowed; 2355 boolean addToBackStack = false; 2356 if (mTmpAddedFragments == null) { 2357 mTmpAddedFragments = new ArrayList<>(); 2358 } else { 2359 mTmpAddedFragments.clear(); 2360 } 2361 if (mAdded != null) { 2362 mTmpAddedFragments.addAll(mAdded); 2363 } 2364 Fragment oldPrimaryNav = getPrimaryNavigationFragment(); 2365 for (int recordNum = startIndex; recordNum < endIndex; recordNum++) { 2366 final BackStackRecord record = records.get(recordNum); 2367 final boolean isPop = isRecordPop.get(recordNum); 2368 if (!isPop) { 2369 oldPrimaryNav = record.expandOps(mTmpAddedFragments, oldPrimaryNav); 2370 } else { 2371 oldPrimaryNav = record.trackAddedFragmentsInPop(mTmpAddedFragments, oldPrimaryNav); 2372 } 2373 addToBackStack = addToBackStack || record.mAddToBackStack; 2374 } 2375 mTmpAddedFragments.clear(); 2376 2377 if (!allowReordering) { 2378 FragmentTransition.startTransitions(this, records, isRecordPop, startIndex, endIndex, 2379 false); 2380 } 2381 executeOps(records, isRecordPop, startIndex, endIndex); 2382 2383 int postponeIndex = endIndex; 2384 if (allowReordering) { 2385 ArraySet<Fragment> addedFragments = new ArraySet<>(); 2386 addAddedFragments(addedFragments); 2387 postponeIndex = postponePostponableTransactions(records, isRecordPop, 2388 startIndex, endIndex, addedFragments); 2389 makeRemovedFragmentsInvisible(addedFragments); 2390 } 2391 2392 if (postponeIndex != startIndex && allowReordering) { 2393 // need to run something now 2394 FragmentTransition.startTransitions(this, records, isRecordPop, startIndex, 2395 postponeIndex, true); 2396 moveToState(mCurState, true); 2397 } 2398 2399 for (int recordNum = startIndex; recordNum < endIndex; recordNum++) { 2400 final BackStackRecord record = records.get(recordNum); 2401 final boolean isPop = isRecordPop.get(recordNum); 2402 if (isPop && record.mIndex >= 0) { 2403 freeBackStackIndex(record.mIndex); 2404 record.mIndex = -1; 2405 } 2406 record.runOnCommitRunnables(); 2407 } 2408 if (addToBackStack) { 2409 reportBackStackChanged(); 2410 } 2411 } 2412 2413 /** 2414 * Any fragments that were removed because they have been postponed should have their views 2415 * made invisible by setting their alpha to 0. 2416 * 2417 * @param fragments The fragments that were added during operation execution. Only the ones 2418 * that are no longer added will have their alpha changed. 2419 */ 2420 private void makeRemovedFragmentsInvisible(ArraySet<Fragment> fragments) { 2421 final int numAdded = fragments.size(); 2422 for (int i = 0; i < numAdded; i++) { 2423 final Fragment fragment = fragments.valueAt(i); 2424 if (!fragment.mAdded) { 2425 final View view = fragment.getView(); 2426 fragment.mPostponedAlpha = view.getAlpha(); 2427 view.setAlpha(0f); 2428 } 2429 } 2430 } 2431 2432 /** 2433 * Examine all transactions and determine which ones are marked as postponed. Those will 2434 * have their operations rolled back and moved to the end of the record list (up to endIndex). 2435 * It will also add the postponed transaction to the queue. 2436 * 2437 * @param records A list of BackStackRecords that should be checked. 2438 * @param isRecordPop The direction that these records are being run. 2439 * @param startIndex The index of the first record in <code>records</code> to be checked 2440 * @param endIndex One more than the final record index in <code>records</code> to be checked. 2441 * @return The index of the first postponed transaction or endIndex if no transaction was 2442 * postponed. 2443 */ 2444 private int postponePostponableTransactions(ArrayList<BackStackRecord> records, 2445 ArrayList<Boolean> isRecordPop, int startIndex, int endIndex, 2446 ArraySet<Fragment> added) { 2447 int postponeIndex = endIndex; 2448 for (int i = endIndex - 1; i >= startIndex; i--) { 2449 final BackStackRecord record = records.get(i); 2450 final boolean isPop = isRecordPop.get(i); 2451 boolean isPostponed = record.isPostponed() 2452 && !record.interactsWith(records, i + 1, endIndex); 2453 if (isPostponed) { 2454 if (mPostponedTransactions == null) { 2455 mPostponedTransactions = new ArrayList<>(); 2456 } 2457 StartEnterTransitionListener listener = 2458 new StartEnterTransitionListener(record, isPop); 2459 mPostponedTransactions.add(listener); 2460 record.setOnStartPostponedListener(listener); 2461 2462 // roll back the transaction 2463 if (isPop) { 2464 record.executeOps(); 2465 } else { 2466 record.executePopOps(false); 2467 } 2468 2469 // move to the end 2470 postponeIndex--; 2471 if (i != postponeIndex) { 2472 records.remove(i); 2473 records.add(postponeIndex, record); 2474 } 2475 2476 // different views may be visible now 2477 addAddedFragments(added); 2478 } 2479 } 2480 return postponeIndex; 2481 } 2482 2483 /** 2484 * When a postponed transaction is ready to be started, this completes the transaction, 2485 * removing, hiding, or showing views as well as starting the animations and transitions. 2486 * <p> 2487 * {@code runtransitions} is set to false when the transaction postponement was interrupted 2488 * abnormally -- normally by a new transaction being started that affects the postponed 2489 * transaction. 2490 * 2491 * @param record The transaction to run 2492 * @param isPop true if record is popping or false if it is adding 2493 * @param runTransitions true if the fragment transition should be run or false otherwise. 2494 * @param moveToState true if the state should be changed after executing the operations. 2495 * This is false when the transaction is canceled when a postponed 2496 * transaction is popped. 2497 */ 2498 private void completeExecute(BackStackRecord record, boolean isPop, boolean runTransitions, 2499 boolean moveToState) { 2500 if (isPop) { 2501 record.executePopOps(moveToState); 2502 } else { 2503 record.executeOps(); 2504 } 2505 ArrayList<BackStackRecord> records = new ArrayList<>(1); 2506 ArrayList<Boolean> isRecordPop = new ArrayList<>(1); 2507 records.add(record); 2508 isRecordPop.add(isPop); 2509 if (runTransitions) { 2510 FragmentTransition.startTransitions(this, records, isRecordPop, 0, 1, true); 2511 } 2512 if (moveToState) { 2513 moveToState(mCurState, true); 2514 } 2515 2516 if (mActive != null) { 2517 final int numActive = mActive.size(); 2518 for (int i = 0; i < numActive; i++) { 2519 // Allow added fragments to be removed during the pop since we aren't going 2520 // to move them to the final state with moveToState(mCurState). 2521 Fragment fragment = mActive.valueAt(i); 2522 if (fragment != null && fragment.mView != null && fragment.mIsNewlyAdded 2523 && record.interactsWith(fragment.mContainerId)) { 2524 if (fragment.mPostponedAlpha > 0) { 2525 fragment.mView.setAlpha(fragment.mPostponedAlpha); 2526 } 2527 if (moveToState) { 2528 fragment.mPostponedAlpha = 0; 2529 } else { 2530 fragment.mPostponedAlpha = -1; 2531 fragment.mIsNewlyAdded = false; 2532 } 2533 } 2534 } 2535 } 2536 } 2537 2538 /** 2539 * Find a fragment within the fragment's container whose View should be below the passed 2540 * fragment. {@code null} is returned when the fragment has no View or if there should be 2541 * no fragment with a View below the given fragment. 2542 * 2543 * As an example, if mAdded has two Fragments with Views sharing the same container: 2544 * FragmentA 2545 * FragmentB 2546 * 2547 * Then, when processing FragmentB, FragmentA will be returned. If, however, FragmentA 2548 * had no View, null would be returned. 2549 * 2550 * @param f The fragment that may be on top of another fragment. 2551 * @return The fragment with a View under f, if one exists or null if f has no View or 2552 * there are no fragments with Views in the same container. 2553 */ 2554 private Fragment findFragmentUnder(Fragment f) { 2555 final ViewGroup container = f.mContainer; 2556 final View view = f.mView; 2557 2558 if (container == null || view == null) { 2559 return null; 2560 } 2561 2562 final int fragmentIndex = mAdded.indexOf(f); 2563 for (int i = fragmentIndex - 1; i >= 0; i--) { 2564 Fragment underFragment = mAdded.get(i); 2565 if (underFragment.mContainer == container && underFragment.mView != null) { 2566 // Found the fragment under this one 2567 return underFragment; 2568 } 2569 } 2570 return null; 2571 } 2572 2573 /** 2574 * Run the operations in the BackStackRecords, either to push or pop. 2575 * 2576 * @param records The list of records whose operations should be run. 2577 * @param isRecordPop The direction that these records are being run. 2578 * @param startIndex The index of the first entry in records to run. 2579 * @param endIndex One past the index of the final entry in records to run. 2580 */ 2581 private static void executeOps(ArrayList<BackStackRecord> records, 2582 ArrayList<Boolean> isRecordPop, int startIndex, int endIndex) { 2583 for (int i = startIndex; i < endIndex; i++) { 2584 final BackStackRecord record = records.get(i); 2585 final boolean isPop = isRecordPop.get(i); 2586 if (isPop) { 2587 record.bumpBackStackNesting(-1); 2588 // Only execute the add operations at the end of 2589 // all transactions. 2590 boolean moveToState = i == (endIndex - 1); 2591 record.executePopOps(moveToState); 2592 } else { 2593 record.bumpBackStackNesting(1); 2594 record.executeOps(); 2595 } 2596 } 2597 } 2598 2599 /** 2600 * Ensure that fragments that are added are moved to at least the CREATED state. 2601 * Any newly-added Views are inserted into {@code added} so that the Transaction can be 2602 * postponed with {@link Fragment#postponeEnterTransition()}. They will later be made 2603 * invisible (by setting their alpha to 0) if they have been removed when postponed. 2604 */ 2605 private void addAddedFragments(ArraySet<Fragment> added) { 2606 if (mCurState < Fragment.CREATED) { 2607 return; 2608 } 2609 // We want to leave the fragment in the started state 2610 final int state = Math.min(mCurState, Fragment.STARTED); 2611 final int numAdded = mAdded == null ? 0 : mAdded.size(); 2612 for (int i = 0; i < numAdded; i++) { 2613 Fragment fragment = mAdded.get(i); 2614 if (fragment.mState < state) { 2615 moveToState(fragment, state, fragment.getNextAnim(), fragment.getNextTransition(), 2616 false); 2617 if (fragment.mView != null && !fragment.mHidden && fragment.mIsNewlyAdded) { 2618 added.add(fragment); 2619 } 2620 } 2621 } 2622 } 2623 2624 /** 2625 * Starts all postponed transactions regardless of whether they are ready or not. 2626 */ 2627 private void forcePostponedTransactions() { 2628 if (mPostponedTransactions != null) { 2629 while (!mPostponedTransactions.isEmpty()) { 2630 mPostponedTransactions.remove(0).completeTransaction(); 2631 } 2632 } 2633 } 2634 2635 /** 2636 * Ends the animations of fragments so that they immediately reach the end state. 2637 * This is used prior to saving the state so that the correct state is saved. 2638 */ 2639 private void endAnimatingAwayFragments() { 2640 final int numFragments = mActive == null ? 0 : mActive.size(); 2641 for (int i = 0; i < numFragments; i++) { 2642 Fragment fragment = mActive.valueAt(i); 2643 if (fragment != null) { 2644 if (fragment.getAnimatingAway() != null) { 2645 // Give up waiting for the animation and just end it. 2646 final int stateAfterAnimating = fragment.getStateAfterAnimating(); 2647 final View animatingAway = fragment.getAnimatingAway(); 2648 fragment.setAnimatingAway(null); 2649 Animation animation = animatingAway.getAnimation(); 2650 if (animation != null) { 2651 animation.cancel(); 2652 // force-clear the animation, as Animation#cancel() doesn't work prior to N, 2653 // and will instead cause the animation to infinitely loop 2654 animatingAway.clearAnimation(); 2655 } 2656 moveToState(fragment, stateAfterAnimating, 0, 0, false); 2657 } else if (fragment.getAnimator() != null) { 2658 fragment.getAnimator().end(); 2659 } 2660 } 2661 } 2662 } 2663 2664 /** 2665 * Adds all records in the pending actions to records and whether they are add or pop 2666 * operations to isPop. After executing, the pending actions will be empty. 2667 * 2668 * @param records All pending actions will generate BackStackRecords added to this. 2669 * This contains the transactions, in order, to execute. 2670 * @param isPop All pending actions will generate booleans to add to this. This contains 2671 * an entry for each entry in records to indicate whether or not it is a 2672 * pop action. 2673 */ 2674 private boolean generateOpsForPendingActions(ArrayList<BackStackRecord> records, 2675 ArrayList<Boolean> isPop) { 2676 boolean didSomething = false; 2677 synchronized (this) { 2678 if (mPendingActions == null || mPendingActions.size() == 0) { 2679 return false; 2680 } 2681 2682 final int numActions = mPendingActions.size(); 2683 for (int i = 0; i < numActions; i++) { 2684 didSomething |= mPendingActions.get(i).generateOps(records, isPop); 2685 } 2686 mPendingActions.clear(); 2687 mHost.getHandler().removeCallbacks(mExecCommit); 2688 } 2689 return didSomething; 2690 } 2691 2692 void doPendingDeferredStart() { 2693 if (mHavePendingDeferredStart) { 2694 boolean loadersRunning = false; 2695 for (int i = 0; i < mActive.size(); i++) { 2696 Fragment f = mActive.valueAt(i); 2697 if (f != null && f.mLoaderManager != null) { 2698 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 2699 } 2700 } 2701 if (!loadersRunning) { 2702 mHavePendingDeferredStart = false; 2703 startPendingDeferredFragments(); 2704 } 2705 } 2706 } 2707 2708 void reportBackStackChanged() { 2709 if (mBackStackChangeListeners != null) { 2710 for (int i=0; i<mBackStackChangeListeners.size(); i++) { 2711 mBackStackChangeListeners.get(i).onBackStackChanged(); 2712 } 2713 } 2714 } 2715 2716 void addBackStackState(BackStackRecord state) { 2717 if (mBackStack == null) { 2718 mBackStack = new ArrayList<BackStackRecord>(); 2719 } 2720 mBackStack.add(state); 2721 } 2722 2723 @SuppressWarnings("unused") 2724 boolean popBackStackState(ArrayList<BackStackRecord> records, ArrayList<Boolean> isRecordPop, 2725 String name, int id, int flags) { 2726 if (mBackStack == null) { 2727 return false; 2728 } 2729 if (name == null && id < 0 && (flags & POP_BACK_STACK_INCLUSIVE) == 0) { 2730 int last = mBackStack.size() - 1; 2731 if (last < 0) { 2732 return false; 2733 } 2734 records.add(mBackStack.remove(last)); 2735 isRecordPop.add(true); 2736 } else { 2737 int index = -1; 2738 if (name != null || id >= 0) { 2739 // If a name or ID is specified, look for that place in 2740 // the stack. 2741 index = mBackStack.size()-1; 2742 while (index >= 0) { 2743 BackStackRecord bss = mBackStack.get(index); 2744 if (name != null && name.equals(bss.getName())) { 2745 break; 2746 } 2747 if (id >= 0 && id == bss.mIndex) { 2748 break; 2749 } 2750 index--; 2751 } 2752 if (index < 0) { 2753 return false; 2754 } 2755 if ((flags&POP_BACK_STACK_INCLUSIVE) != 0) { 2756 index--; 2757 // Consume all following entries that match. 2758 while (index >= 0) { 2759 BackStackRecord bss = mBackStack.get(index); 2760 if ((name != null && name.equals(bss.getName())) 2761 || (id >= 0 && id == bss.mIndex)) { 2762 index--; 2763 continue; 2764 } 2765 break; 2766 } 2767 } 2768 } 2769 if (index == mBackStack.size()-1) { 2770 return false; 2771 } 2772 for (int i = mBackStack.size() - 1; i > index; i--) { 2773 records.add(mBackStack.remove(i)); 2774 isRecordPop.add(true); 2775 } 2776 } 2777 return true; 2778 } 2779 2780 FragmentManagerNonConfig retainNonConfig() { 2781 setRetaining(mSavedNonConfig); 2782 return mSavedNonConfig; 2783 } 2784 2785 /** 2786 * Recurse the FragmentManagerNonConfig fragments and set the mRetaining to true. This 2787 * was previously done while saving the non-config state, but that has been moved to 2788 * {@link #saveNonConfig()} called from {@link #saveAllState()}. If mRetaining is set too 2789 * early, the fragment won't be destroyed when the FragmentManager is destroyed. 2790 */ 2791 private static void setRetaining(FragmentManagerNonConfig nonConfig) { 2792 if (nonConfig == null) { 2793 return; 2794 } 2795 List<Fragment> fragments = nonConfig.getFragments(); 2796 if (fragments != null) { 2797 for (Fragment fragment : fragments) { 2798 fragment.mRetaining = true; 2799 } 2800 } 2801 List<FragmentManagerNonConfig> children = nonConfig.getChildNonConfigs(); 2802 if (children != null) { 2803 for (FragmentManagerNonConfig child : children) { 2804 setRetaining(child); 2805 } 2806 } 2807 } 2808 2809 void saveNonConfig() { 2810 ArrayList<Fragment> fragments = null; 2811 ArrayList<FragmentManagerNonConfig> childFragments = null; 2812 if (mActive != null) { 2813 for (int i=0; i<mActive.size(); i++) { 2814 Fragment f = mActive.valueAt(i); 2815 if (f != null) { 2816 if (f.mRetainInstance) { 2817 if (fragments == null) { 2818 fragments = new ArrayList<Fragment>(); 2819 } 2820 fragments.add(f); 2821 f.mTargetIndex = f.mTarget != null ? f.mTarget.mIndex : -1; 2822 if (DEBUG) Log.v(TAG, "retainNonConfig: keeping retained " + f); 2823 } 2824 FragmentManagerNonConfig child; 2825 if (f.mChildFragmentManager != null) { 2826 f.mChildFragmentManager.saveNonConfig(); 2827 child = f.mChildFragmentManager.mSavedNonConfig; 2828 } else { 2829 // f.mChildNonConfig may be not null, when the parent fragment is 2830 // in the backstack. 2831 child = f.mChildNonConfig; 2832 } 2833 2834 if (childFragments == null && child != null) { 2835 childFragments = new ArrayList<>(mActive.size()); 2836 for (int j = 0; j < i; j++) { 2837 childFragments.add(null); 2838 } 2839 } 2840 2841 if (childFragments != null) { 2842 childFragments.add(child); 2843 } 2844 } 2845 } 2846 } 2847 if (fragments == null && childFragments == null) { 2848 mSavedNonConfig = null; 2849 } else { 2850 mSavedNonConfig = new FragmentManagerNonConfig(fragments, childFragments); 2851 } 2852 } 2853 2854 void saveFragmentViewState(Fragment f) { 2855 if (f.mInnerView == null) { 2856 return; 2857 } 2858 if (mStateArray == null) { 2859 mStateArray = new SparseArray<Parcelable>(); 2860 } else { 2861 mStateArray.clear(); 2862 } 2863 f.mInnerView.saveHierarchyState(mStateArray); 2864 if (mStateArray.size() > 0) { 2865 f.mSavedViewState = mStateArray; 2866 mStateArray = null; 2867 } 2868 } 2869 2870 Bundle saveFragmentBasicState(Fragment f) { 2871 Bundle result = null; 2872 2873 if (mStateBundle == null) { 2874 mStateBundle = new Bundle(); 2875 } 2876 f.performSaveInstanceState(mStateBundle); 2877 dispatchOnFragmentSaveInstanceState(f, mStateBundle, false); 2878 if (!mStateBundle.isEmpty()) { 2879 result = mStateBundle; 2880 mStateBundle = null; 2881 } 2882 2883 if (f.mView != null) { 2884 saveFragmentViewState(f); 2885 } 2886 if (f.mSavedViewState != null) { 2887 if (result == null) { 2888 result = new Bundle(); 2889 } 2890 result.putSparseParcelableArray( 2891 FragmentManagerImpl.VIEW_STATE_TAG, f.mSavedViewState); 2892 } 2893 if (!f.mUserVisibleHint) { 2894 if (result == null) { 2895 result = new Bundle(); 2896 } 2897 // Only add this if it's not the default value 2898 result.putBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG, f.mUserVisibleHint); 2899 } 2900 2901 return result; 2902 } 2903 2904 Parcelable saveAllState() { 2905 // Make sure all pending operations have now been executed to get 2906 // our state update-to-date. 2907 forcePostponedTransactions(); 2908 endAnimatingAwayFragments(); 2909 execPendingActions(); 2910 2911 mStateSaved = true; 2912 mSavedNonConfig = null; 2913 2914 if (mActive == null || mActive.size() <= 0) { 2915 return null; 2916 } 2917 2918 // First collect all active fragments. 2919 int N = mActive.size(); 2920 FragmentState[] active = new FragmentState[N]; 2921 boolean haveFragments = false; 2922 for (int i=0; i<N; i++) { 2923 Fragment f = mActive.valueAt(i); 2924 if (f != null) { 2925 if (f.mIndex < 0) { 2926 throwException(new IllegalStateException( 2927 "Failure saving state: active " + f 2928 + " has cleared index: " + f.mIndex)); 2929 } 2930 2931 haveFragments = true; 2932 2933 FragmentState fs = new FragmentState(f); 2934 active[i] = fs; 2935 2936 if (f.mState > Fragment.INITIALIZING && fs.mSavedFragmentState == null) { 2937 fs.mSavedFragmentState = saveFragmentBasicState(f); 2938 2939 if (f.mTarget != null) { 2940 if (f.mTarget.mIndex < 0) { 2941 throwException(new IllegalStateException( 2942 "Failure saving state: " + f 2943 + " has target not in fragment manager: " + f.mTarget)); 2944 } 2945 if (fs.mSavedFragmentState == null) { 2946 fs.mSavedFragmentState = new Bundle(); 2947 } 2948 putFragment(fs.mSavedFragmentState, 2949 FragmentManagerImpl.TARGET_STATE_TAG, f.mTarget); 2950 if (f.mTargetRequestCode != 0) { 2951 fs.mSavedFragmentState.putInt( 2952 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 2953 f.mTargetRequestCode); 2954 } 2955 } 2956 2957 } else { 2958 fs.mSavedFragmentState = f.mSavedFragmentState; 2959 } 2960 2961 if (DEBUG) Log.v(TAG, "Saved state of " + f + ": " 2962 + fs.mSavedFragmentState); 2963 } 2964 } 2965 2966 if (!haveFragments) { 2967 if (DEBUG) Log.v(TAG, "saveAllState: no fragments!"); 2968 return null; 2969 } 2970 2971 int[] added = null; 2972 BackStackState[] backStack = null; 2973 2974 // Build list of currently added fragments. 2975 if (mAdded != null) { 2976 N = mAdded.size(); 2977 if (N > 0) { 2978 added = new int[N]; 2979 for (int i=0; i<N; i++) { 2980 added[i] = mAdded.get(i).mIndex; 2981 if (added[i] < 0) { 2982 throwException(new IllegalStateException( 2983 "Failure saving state: active " + mAdded.get(i) 2984 + " has cleared index: " + added[i])); 2985 } 2986 if (DEBUG) Log.v(TAG, "saveAllState: adding fragment #" + i 2987 + ": " + mAdded.get(i)); 2988 } 2989 } 2990 } 2991 2992 // Now save back stack. 2993 if (mBackStack != null) { 2994 N = mBackStack.size(); 2995 if (N > 0) { 2996 backStack = new BackStackState[N]; 2997 for (int i=0; i<N; i++) { 2998 backStack[i] = new BackStackState(mBackStack.get(i)); 2999 if (DEBUG) Log.v(TAG, "saveAllState: adding back stack #" + i 3000 + ": " + mBackStack.get(i)); 3001 } 3002 } 3003 } 3004 3005 FragmentManagerState fms = new FragmentManagerState(); 3006 fms.mActive = active; 3007 fms.mAdded = added; 3008 fms.mBackStack = backStack; 3009 if (mPrimaryNav != null) { 3010 fms.mPrimaryNavActiveIndex = mPrimaryNav.mIndex; 3011 } 3012 fms.mNextFragmentIndex = mNextFragmentIndex; 3013 saveNonConfig(); 3014 return fms; 3015 } 3016 3017 void restoreAllState(Parcelable state, FragmentManagerNonConfig nonConfig) { 3018 // If there is no saved state at all, then there can not be 3019 // any nonConfig fragments either, so that is that. 3020 if (state == null) return; 3021 FragmentManagerState fms = (FragmentManagerState)state; 3022 if (fms.mActive == null) return; 3023 3024 List<FragmentManagerNonConfig> childNonConfigs = null; 3025 3026 // First re-attach any non-config instances we are retaining back 3027 // to their saved state, so we don't try to instantiate them again. 3028 if (nonConfig != null) { 3029 List<Fragment> nonConfigFragments = nonConfig.getFragments(); 3030 childNonConfigs = nonConfig.getChildNonConfigs(); 3031 final int count = nonConfigFragments != null ? nonConfigFragments.size() : 0; 3032 for (int i = 0; i < count; i++) { 3033 Fragment f = nonConfigFragments.get(i); 3034 if (DEBUG) Log.v(TAG, "restoreAllState: re-attaching retained " + f); 3035 int index = 0; // index into fms.mActive 3036 while (index < fms.mActive.length && fms.mActive[index].mIndex != f.mIndex) { 3037 index++; 3038 } 3039 if (index == fms.mActive.length) { 3040 throwException(new IllegalStateException("Could not find active fragment " 3041 + "with index " + f.mIndex)); 3042 } 3043 FragmentState fs = fms.mActive[index]; 3044 fs.mInstance = f; 3045 f.mSavedViewState = null; 3046 f.mBackStackNesting = 0; 3047 f.mInLayout = false; 3048 f.mAdded = false; 3049 f.mTarget = null; 3050 if (fs.mSavedFragmentState != null) { 3051 fs.mSavedFragmentState.setClassLoader(mHost.getContext().getClassLoader()); 3052 f.mSavedViewState = fs.mSavedFragmentState.getSparseParcelableArray( 3053 FragmentManagerImpl.VIEW_STATE_TAG); 3054 f.mSavedFragmentState = fs.mSavedFragmentState; 3055 } 3056 } 3057 } 3058 3059 // Build the full list of active fragments, instantiating them from 3060 // their saved state. 3061 mActive = new SparseArray<>(fms.mActive.length); 3062 for (int i=0; i<fms.mActive.length; i++) { 3063 FragmentState fs = fms.mActive[i]; 3064 if (fs != null) { 3065 FragmentManagerNonConfig childNonConfig = null; 3066 if (childNonConfigs != null && i < childNonConfigs.size()) { 3067 childNonConfig = childNonConfigs.get(i); 3068 } 3069 Fragment f = fs.instantiate(mHost, mContainer, mParent, childNonConfig); 3070 if (DEBUG) Log.v(TAG, "restoreAllState: active #" + i + ": " + f); 3071 mActive.put(f.mIndex, f); 3072 // Now that the fragment is instantiated (or came from being 3073 // retained above), clear mInstance in case we end up re-restoring 3074 // from this FragmentState again. 3075 fs.mInstance = null; 3076 } 3077 } 3078 3079 // Update the target of all retained fragments. 3080 if (nonConfig != null) { 3081 List<Fragment> nonConfigFragments = nonConfig.getFragments(); 3082 final int count = nonConfigFragments != null ? nonConfigFragments.size() : 0; 3083 for (int i = 0; i < count; i++) { 3084 Fragment f = nonConfigFragments.get(i); 3085 if (f.mTargetIndex >= 0) { 3086 f.mTarget = mActive.get(f.mTargetIndex); 3087 if (f.mTarget == null) { 3088 Log.w(TAG, "Re-attaching retained fragment " + f 3089 + " target no longer exists: " + f.mTargetIndex); 3090 } 3091 } 3092 } 3093 } 3094 3095 // Build the list of currently added fragments. 3096 if (fms.mAdded != null) { 3097 mAdded = new ArrayList<Fragment>(fms.mAdded.length); 3098 for (int i=0; i<fms.mAdded.length; i++) { 3099 Fragment f = mActive.get(fms.mAdded[i]); 3100 if (f == null) { 3101 throwException(new IllegalStateException( 3102 "No instantiated fragment for index #" + fms.mAdded[i])); 3103 } 3104 f.mAdded = true; 3105 if (DEBUG) Log.v(TAG, "restoreAllState: added #" + i + ": " + f); 3106 if (mAdded.contains(f)) { 3107 throw new IllegalStateException("Already added!"); 3108 } 3109 synchronized (mAdded) { 3110 mAdded.add(f); 3111 } 3112 } 3113 } else { 3114 mAdded = null; 3115 } 3116 3117 // Build the back stack. 3118 if (fms.mBackStack != null) { 3119 mBackStack = new ArrayList<BackStackRecord>(fms.mBackStack.length); 3120 for (int i=0; i<fms.mBackStack.length; i++) { 3121 BackStackRecord bse = fms.mBackStack[i].instantiate(this); 3122 if (DEBUG) { 3123 Log.v(TAG, "restoreAllState: back stack #" + i 3124 + " (index " + bse.mIndex + "): " + bse); 3125 LogWriter logw = new LogWriter(TAG); 3126 PrintWriter pw = new PrintWriter(logw); 3127 bse.dump(" ", pw, false); 3128 pw.close(); 3129 } 3130 mBackStack.add(bse); 3131 if (bse.mIndex >= 0) { 3132 setBackStackIndex(bse.mIndex, bse); 3133 } 3134 } 3135 } else { 3136 mBackStack = null; 3137 } 3138 3139 if (fms.mPrimaryNavActiveIndex >= 0) { 3140 mPrimaryNav = mActive.get(fms.mPrimaryNavActiveIndex); 3141 } 3142 this.mNextFragmentIndex = fms.mNextFragmentIndex; 3143 } 3144 3145 /** 3146 * To prevent list modification errors, mActive sets values to null instead of 3147 * removing them when the Fragment becomes inactive. This cleans up the list at the 3148 * end of executing the transactions. 3149 */ 3150 private void burpActive() { 3151 if (mActive != null) { 3152 for (int i = mActive.size() - 1; i >= 0; i--) { 3153 if (mActive.valueAt(i) == null) { 3154 mActive.delete(mActive.keyAt(i)); 3155 } 3156 } 3157 } 3158 } 3159 3160 public void attachController(FragmentHostCallback host, 3161 FragmentContainer container, Fragment parent) { 3162 if (mHost != null) throw new IllegalStateException("Already attached"); 3163 mHost = host; 3164 mContainer = container; 3165 mParent = parent; 3166 } 3167 3168 public void noteStateNotSaved() { 3169 mSavedNonConfig = null; 3170 mStateSaved = false; 3171 final int addedCount = mAdded == null ? 0 : mAdded.size(); 3172 for (int i = 0; i < addedCount; i++) { 3173 Fragment fragment = mAdded.get(i); 3174 if (fragment != null) { 3175 fragment.noteStateNotSaved(); 3176 } 3177 } 3178 } 3179 3180 public void dispatchCreate() { 3181 mStateSaved = false; 3182 dispatchStateChange(Fragment.CREATED); 3183 } 3184 3185 public void dispatchActivityCreated() { 3186 mStateSaved = false; 3187 dispatchStateChange(Fragment.ACTIVITY_CREATED); 3188 } 3189 3190 public void dispatchStart() { 3191 mStateSaved = false; 3192 dispatchStateChange(Fragment.STARTED); 3193 } 3194 3195 public void dispatchResume() { 3196 mStateSaved = false; 3197 dispatchStateChange(Fragment.RESUMED); 3198 } 3199 3200 public void dispatchPause() { 3201 dispatchStateChange(Fragment.STARTED); 3202 } 3203 3204 public void dispatchStop() { 3205 // See saveAllState() for the explanation of this. We do this for 3206 // all platform versions, to keep our behavior more consistent between 3207 // them. 3208 mStateSaved = true; 3209 3210 dispatchStateChange(Fragment.STOPPED); 3211 } 3212 3213 public void dispatchReallyStop() { 3214 dispatchStateChange(Fragment.ACTIVITY_CREATED); 3215 } 3216 3217 public void dispatchDestroyView() { 3218 dispatchStateChange(Fragment.CREATED); 3219 } 3220 3221 public void dispatchDestroy() { 3222 mDestroyed = true; 3223 execPendingActions(); 3224 dispatchStateChange(Fragment.INITIALIZING); 3225 mHost = null; 3226 mContainer = null; 3227 mParent = null; 3228 } 3229 3230 private void dispatchStateChange(int nextState) { 3231 try { 3232 mExecutingActions = true; 3233 moveToState(nextState, false); 3234 } finally { 3235 mExecutingActions = false; 3236 } 3237 execPendingActions(); 3238 } 3239 3240 public void dispatchMultiWindowModeChanged(boolean isInMultiWindowMode) { 3241 if (mAdded == null) { 3242 return; 3243 } 3244 for (int i = mAdded.size() - 1; i >= 0; --i) { 3245 final android.support.v4.app.Fragment f = mAdded.get(i); 3246 if (f != null) { 3247 f.performMultiWindowModeChanged(isInMultiWindowMode); 3248 } 3249 } 3250 } 3251 3252 public void dispatchPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 3253 if (mAdded == null) { 3254 return; 3255 } 3256 for (int i = mAdded.size() - 1; i >= 0; --i) { 3257 final android.support.v4.app.Fragment f = mAdded.get(i); 3258 if (f != null) { 3259 f.performPictureInPictureModeChanged(isInPictureInPictureMode); 3260 } 3261 } 3262 } 3263 3264 public void dispatchConfigurationChanged(Configuration newConfig) { 3265 if (mAdded != null) { 3266 for (int i=0; i<mAdded.size(); i++) { 3267 Fragment f = mAdded.get(i); 3268 if (f != null) { 3269 f.performConfigurationChanged(newConfig); 3270 } 3271 } 3272 } 3273 } 3274 3275 public void dispatchLowMemory() { 3276 if (mAdded != null) { 3277 for (int i=0; i<mAdded.size(); i++) { 3278 Fragment f = mAdded.get(i); 3279 if (f != null) { 3280 f.performLowMemory(); 3281 } 3282 } 3283 } 3284 } 3285 3286 public boolean dispatchCreateOptionsMenu(Menu menu, MenuInflater inflater) { 3287 boolean show = false; 3288 ArrayList<Fragment> newMenus = null; 3289 if (mAdded != null) { 3290 for (int i=0; i<mAdded.size(); i++) { 3291 Fragment f = mAdded.get(i); 3292 if (f != null) { 3293 if (f.performCreateOptionsMenu(menu, inflater)) { 3294 show = true; 3295 if (newMenus == null) { 3296 newMenus = new ArrayList<Fragment>(); 3297 } 3298 newMenus.add(f); 3299 } 3300 } 3301 } 3302 } 3303 3304 if (mCreatedMenus != null) { 3305 for (int i=0; i<mCreatedMenus.size(); i++) { 3306 Fragment f = mCreatedMenus.get(i); 3307 if (newMenus == null || !newMenus.contains(f)) { 3308 f.onDestroyOptionsMenu(); 3309 } 3310 } 3311 } 3312 3313 mCreatedMenus = newMenus; 3314 3315 return show; 3316 } 3317 3318 public boolean dispatchPrepareOptionsMenu(Menu menu) { 3319 boolean show = false; 3320 if (mAdded != null) { 3321 for (int i=0; i<mAdded.size(); i++) { 3322 Fragment f = mAdded.get(i); 3323 if (f != null) { 3324 if (f.performPrepareOptionsMenu(menu)) { 3325 show = true; 3326 } 3327 } 3328 } 3329 } 3330 return show; 3331 } 3332 3333 public boolean dispatchOptionsItemSelected(MenuItem item) { 3334 if (mAdded != null) { 3335 for (int i=0; i<mAdded.size(); i++) { 3336 Fragment f = mAdded.get(i); 3337 if (f != null) { 3338 if (f.performOptionsItemSelected(item)) { 3339 return true; 3340 } 3341 } 3342 } 3343 } 3344 return false; 3345 } 3346 3347 public boolean dispatchContextItemSelected(MenuItem item) { 3348 if (mAdded != null) { 3349 for (int i=0; i<mAdded.size(); i++) { 3350 Fragment f = mAdded.get(i); 3351 if (f != null) { 3352 if (f.performContextItemSelected(item)) { 3353 return true; 3354 } 3355 } 3356 } 3357 } 3358 return false; 3359 } 3360 3361 public void dispatchOptionsMenuClosed(Menu menu) { 3362 if (mAdded != null) { 3363 for (int i=0; i<mAdded.size(); i++) { 3364 Fragment f = mAdded.get(i); 3365 if (f != null) { 3366 f.performOptionsMenuClosed(menu); 3367 } 3368 } 3369 } 3370 } 3371 3372 @SuppressWarnings("ReferenceEquality") 3373 public void setPrimaryNavigationFragment(Fragment f) { 3374 if (f != null && (mActive.get(f.mIndex) != f 3375 || (f.mHost != null && f.getFragmentManager() != this))) { 3376 throw new IllegalArgumentException("Fragment " + f 3377 + " is not an active fragment of FragmentManager " + this); 3378 } 3379 mPrimaryNav = f; 3380 } 3381 3382 @Override 3383 public Fragment getPrimaryNavigationFragment() { 3384 return mPrimaryNav; 3385 } 3386 3387 @Override 3388 public void registerFragmentLifecycleCallbacks(FragmentLifecycleCallbacks cb, 3389 boolean recursive) { 3390 if (mLifecycleCallbacks == null) { 3391 mLifecycleCallbacks = new CopyOnWriteArrayList<>(); 3392 } 3393 mLifecycleCallbacks.add(new Pair<>(cb, recursive)); 3394 } 3395 3396 @Override 3397 public void unregisterFragmentLifecycleCallbacks(FragmentLifecycleCallbacks cb) { 3398 if (mLifecycleCallbacks == null) { 3399 return; 3400 } 3401 3402 synchronized (mLifecycleCallbacks) { 3403 for (int i = 0, N = mLifecycleCallbacks.size(); i < N; i++) { 3404 if (mLifecycleCallbacks.get(i).first == cb) { 3405 mLifecycleCallbacks.remove(i); 3406 break; 3407 } 3408 } 3409 } 3410 } 3411 3412 void dispatchOnFragmentPreAttached(Fragment f, Context context, boolean onlyRecursive) { 3413 if (mParent != null) { 3414 FragmentManager parentManager = mParent.getFragmentManager(); 3415 if (parentManager instanceof FragmentManagerImpl) { 3416 ((FragmentManagerImpl) parentManager) 3417 .dispatchOnFragmentPreAttached(f, context, true); 3418 } 3419 } 3420 if (mLifecycleCallbacks == null) { 3421 return; 3422 } 3423 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3424 if (!onlyRecursive || p.second) { 3425 p.first.onFragmentPreAttached(this, f, context); 3426 } 3427 } 3428 } 3429 3430 void dispatchOnFragmentAttached(Fragment f, Context context, boolean onlyRecursive) { 3431 if (mParent != null) { 3432 FragmentManager parentManager = mParent.getFragmentManager(); 3433 if (parentManager instanceof FragmentManagerImpl) { 3434 ((FragmentManagerImpl) parentManager) 3435 .dispatchOnFragmentAttached(f, context, true); 3436 } 3437 } 3438 if (mLifecycleCallbacks == null) { 3439 return; 3440 } 3441 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3442 if (!onlyRecursive || p.second) { 3443 p.first.onFragmentAttached(this, f, context); 3444 } 3445 } 3446 } 3447 3448 void dispatchOnFragmentPreCreated(Fragment f, Bundle savedInstanceState, 3449 boolean onlyRecursive) { 3450 if (mParent != null) { 3451 FragmentManager parentManager = mParent.getFragmentManager(); 3452 if (parentManager instanceof FragmentManagerImpl) { 3453 ((FragmentManagerImpl) parentManager) 3454 .dispatchOnFragmentPreCreated(f, savedInstanceState, true); 3455 } 3456 } 3457 if (mLifecycleCallbacks == null) { 3458 return; 3459 } 3460 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3461 if (!onlyRecursive || p.second) { 3462 p.first.onFragmentPreCreated(this, f, savedInstanceState); 3463 } 3464 } 3465 } 3466 3467 void dispatchOnFragmentCreated(Fragment f, Bundle savedInstanceState, boolean onlyRecursive) { 3468 if (mParent != null) { 3469 FragmentManager parentManager = mParent.getFragmentManager(); 3470 if (parentManager instanceof FragmentManagerImpl) { 3471 ((FragmentManagerImpl) parentManager) 3472 .dispatchOnFragmentCreated(f, savedInstanceState, true); 3473 } 3474 } 3475 if (mLifecycleCallbacks == null) { 3476 return; 3477 } 3478 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3479 if (!onlyRecursive || p.second) { 3480 p.first.onFragmentCreated(this, f, savedInstanceState); 3481 } 3482 } 3483 } 3484 3485 void dispatchOnFragmentActivityCreated(Fragment f, Bundle savedInstanceState, 3486 boolean onlyRecursive) { 3487 if (mParent != null) { 3488 FragmentManager parentManager = mParent.getFragmentManager(); 3489 if (parentManager instanceof FragmentManagerImpl) { 3490 ((FragmentManagerImpl) parentManager) 3491 .dispatchOnFragmentActivityCreated(f, savedInstanceState, true); 3492 } 3493 } 3494 if (mLifecycleCallbacks == null) { 3495 return; 3496 } 3497 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3498 if (!onlyRecursive || p.second) { 3499 p.first.onFragmentActivityCreated(this, f, savedInstanceState); 3500 } 3501 } 3502 } 3503 3504 void dispatchOnFragmentViewCreated(Fragment f, View v, Bundle savedInstanceState, 3505 boolean onlyRecursive) { 3506 if (mParent != null) { 3507 FragmentManager parentManager = mParent.getFragmentManager(); 3508 if (parentManager instanceof FragmentManagerImpl) { 3509 ((FragmentManagerImpl) parentManager) 3510 .dispatchOnFragmentViewCreated(f, v, savedInstanceState, true); 3511 } 3512 } 3513 if (mLifecycleCallbacks == null) { 3514 return; 3515 } 3516 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3517 if (!onlyRecursive || p.second) { 3518 p.first.onFragmentViewCreated(this, f, v, savedInstanceState); 3519 } 3520 } 3521 } 3522 3523 void dispatchOnFragmentStarted(Fragment f, boolean onlyRecursive) { 3524 if (mParent != null) { 3525 FragmentManager parentManager = mParent.getFragmentManager(); 3526 if (parentManager instanceof FragmentManagerImpl) { 3527 ((FragmentManagerImpl) parentManager) 3528 .dispatchOnFragmentStarted(f, true); 3529 } 3530 } 3531 if (mLifecycleCallbacks == null) { 3532 return; 3533 } 3534 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3535 if (!onlyRecursive || p.second) { 3536 p.first.onFragmentStarted(this, f); 3537 } 3538 } 3539 } 3540 3541 void dispatchOnFragmentResumed(Fragment f, boolean onlyRecursive) { 3542 if (mParent != null) { 3543 FragmentManager parentManager = mParent.getFragmentManager(); 3544 if (parentManager instanceof FragmentManagerImpl) { 3545 ((FragmentManagerImpl) parentManager) 3546 .dispatchOnFragmentResumed(f, true); 3547 } 3548 } 3549 if (mLifecycleCallbacks == null) { 3550 return; 3551 } 3552 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3553 if (!onlyRecursive || p.second) { 3554 p.first.onFragmentResumed(this, f); 3555 } 3556 } 3557 } 3558 3559 void dispatchOnFragmentPaused(Fragment f, boolean onlyRecursive) { 3560 if (mParent != null) { 3561 FragmentManager parentManager = mParent.getFragmentManager(); 3562 if (parentManager instanceof FragmentManagerImpl) { 3563 ((FragmentManagerImpl) parentManager) 3564 .dispatchOnFragmentPaused(f, true); 3565 } 3566 } 3567 if (mLifecycleCallbacks == null) { 3568 return; 3569 } 3570 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3571 if (!onlyRecursive || p.second) { 3572 p.first.onFragmentPaused(this, f); 3573 } 3574 } 3575 } 3576 3577 void dispatchOnFragmentStopped(Fragment f, boolean onlyRecursive) { 3578 if (mParent != null) { 3579 FragmentManager parentManager = mParent.getFragmentManager(); 3580 if (parentManager instanceof FragmentManagerImpl) { 3581 ((FragmentManagerImpl) parentManager) 3582 .dispatchOnFragmentStopped(f, true); 3583 } 3584 } 3585 if (mLifecycleCallbacks == null) { 3586 return; 3587 } 3588 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3589 if (!onlyRecursive || p.second) { 3590 p.first.onFragmentStopped(this, f); 3591 } 3592 } 3593 } 3594 3595 void dispatchOnFragmentSaveInstanceState(Fragment f, Bundle outState, boolean onlyRecursive) { 3596 if (mParent != null) { 3597 FragmentManager parentManager = mParent.getFragmentManager(); 3598 if (parentManager instanceof FragmentManagerImpl) { 3599 ((FragmentManagerImpl) parentManager) 3600 .dispatchOnFragmentSaveInstanceState(f, outState, true); 3601 } 3602 } 3603 if (mLifecycleCallbacks == null) { 3604 return; 3605 } 3606 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3607 if (!onlyRecursive || p.second) { 3608 p.first.onFragmentSaveInstanceState(this, f, outState); 3609 } 3610 } 3611 } 3612 3613 void dispatchOnFragmentViewDestroyed(Fragment f, boolean onlyRecursive) { 3614 if (mParent != null) { 3615 FragmentManager parentManager = mParent.getFragmentManager(); 3616 if (parentManager instanceof FragmentManagerImpl) { 3617 ((FragmentManagerImpl) parentManager) 3618 .dispatchOnFragmentViewDestroyed(f, true); 3619 } 3620 } 3621 if (mLifecycleCallbacks == null) { 3622 return; 3623 } 3624 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3625 if (!onlyRecursive || p.second) { 3626 p.first.onFragmentViewDestroyed(this, f); 3627 } 3628 } 3629 } 3630 3631 void dispatchOnFragmentDestroyed(Fragment f, boolean onlyRecursive) { 3632 if (mParent != null) { 3633 FragmentManager parentManager = mParent.getFragmentManager(); 3634 if (parentManager instanceof FragmentManagerImpl) { 3635 ((FragmentManagerImpl) parentManager) 3636 .dispatchOnFragmentDestroyed(f, true); 3637 } 3638 } 3639 if (mLifecycleCallbacks == null) { 3640 return; 3641 } 3642 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3643 if (!onlyRecursive || p.second) { 3644 p.first.onFragmentDestroyed(this, f); 3645 } 3646 } 3647 } 3648 3649 void dispatchOnFragmentDetached(Fragment f, boolean onlyRecursive) { 3650 if (mParent != null) { 3651 FragmentManager parentManager = mParent.getFragmentManager(); 3652 if (parentManager instanceof FragmentManagerImpl) { 3653 ((FragmentManagerImpl) parentManager) 3654 .dispatchOnFragmentDetached(f, true); 3655 } 3656 } 3657 if (mLifecycleCallbacks == null) { 3658 return; 3659 } 3660 for (Pair<FragmentLifecycleCallbacks, Boolean> p : mLifecycleCallbacks) { 3661 if (!onlyRecursive || p.second) { 3662 p.first.onFragmentDetached(this, f); 3663 } 3664 } 3665 } 3666 3667 public static int reverseTransit(int transit) { 3668 int rev = 0; 3669 switch (transit) { 3670 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 3671 rev = FragmentTransaction.TRANSIT_FRAGMENT_CLOSE; 3672 break; 3673 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 3674 rev = FragmentTransaction.TRANSIT_FRAGMENT_OPEN; 3675 break; 3676 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 3677 rev = FragmentTransaction.TRANSIT_FRAGMENT_FADE; 3678 break; 3679 } 3680 return rev; 3681 3682 } 3683 3684 public static final int ANIM_STYLE_OPEN_ENTER = 1; 3685 public static final int ANIM_STYLE_OPEN_EXIT = 2; 3686 public static final int ANIM_STYLE_CLOSE_ENTER = 3; 3687 public static final int ANIM_STYLE_CLOSE_EXIT = 4; 3688 public static final int ANIM_STYLE_FADE_ENTER = 5; 3689 public static final int ANIM_STYLE_FADE_EXIT = 6; 3690 3691 public static int transitToStyleIndex(int transit, boolean enter) { 3692 int animAttr = -1; 3693 switch (transit) { 3694 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 3695 animAttr = enter ? ANIM_STYLE_OPEN_ENTER : ANIM_STYLE_OPEN_EXIT; 3696 break; 3697 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 3698 animAttr = enter ? ANIM_STYLE_CLOSE_ENTER : ANIM_STYLE_CLOSE_EXIT; 3699 break; 3700 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 3701 animAttr = enter ? ANIM_STYLE_FADE_ENTER : ANIM_STYLE_FADE_EXIT; 3702 break; 3703 } 3704 return animAttr; 3705 } 3706 3707 @Override 3708 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 3709 if (!"fragment".equals(name)) { 3710 return null; 3711 } 3712 3713 String fname = attrs.getAttributeValue(null, "class"); 3714 TypedArray a = context.obtainStyledAttributes(attrs, FragmentTag.Fragment); 3715 if (fname == null) { 3716 fname = a.getString(FragmentTag.Fragment_name); 3717 } 3718 int id = a.getResourceId(FragmentTag.Fragment_id, View.NO_ID); 3719 String tag = a.getString(FragmentTag.Fragment_tag); 3720 a.recycle(); 3721 3722 if (!Fragment.isSupportFragmentClass(mHost.getContext(), fname)) { 3723 // Invalid support lib fragment; let the device's framework handle it. 3724 // This will allow android.app.Fragments to do the right thing. 3725 return null; 3726 } 3727 3728 int containerId = parent != null ? parent.getId() : 0; 3729 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 3730 throw new IllegalArgumentException(attrs.getPositionDescription() 3731 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 3732 } 3733 3734 // If we restored from a previous state, we may already have 3735 // instantiated this fragment from the state and should use 3736 // that instance instead of making a new one. 3737 Fragment fragment = id != View.NO_ID ? findFragmentById(id) : null; 3738 if (fragment == null && tag != null) { 3739 fragment = findFragmentByTag(tag); 3740 } 3741 if (fragment == null && containerId != View.NO_ID) { 3742 fragment = findFragmentById(containerId); 3743 } 3744 3745 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 3746 + Integer.toHexString(id) + " fname=" + fname 3747 + " existing=" + fragment); 3748 if (fragment == null) { 3749 fragment = mContainer.instantiate(context, fname, null); 3750 fragment.mFromLayout = true; 3751 fragment.mFragmentId = id != 0 ? id : containerId; 3752 fragment.mContainerId = containerId; 3753 fragment.mTag = tag; 3754 fragment.mInLayout = true; 3755 fragment.mFragmentManager = this; 3756 fragment.mHost = mHost; 3757 fragment.onInflate(mHost.getContext(), attrs, fragment.mSavedFragmentState); 3758 addFragment(fragment, true); 3759 3760 } else if (fragment.mInLayout) { 3761 // A fragment already exists and it is not one we restored from 3762 // previous state. 3763 throw new IllegalArgumentException(attrs.getPositionDescription() 3764 + ": Duplicate id 0x" + Integer.toHexString(id) 3765 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 3766 + " with another fragment for " + fname); 3767 } else { 3768 // This fragment was retained from a previous instance; get it 3769 // going now. 3770 fragment.mInLayout = true; 3771 fragment.mHost = mHost; 3772 // If this fragment is newly instantiated (either right now, or 3773 // from last saved state), then give it the attributes to 3774 // initialize itself. 3775 if (!fragment.mRetaining) { 3776 fragment.onInflate(mHost.getContext(), attrs, fragment.mSavedFragmentState); 3777 } 3778 } 3779 3780 // If we haven't finished entering the CREATED state ourselves yet, 3781 // push the inflated child fragment along. This will ensureInflatedFragmentView 3782 // at the right phase of the lifecycle so that we will have mView populated 3783 // for compliant fragments below. 3784 if (mCurState < Fragment.CREATED && fragment.mFromLayout) { 3785 moveToState(fragment, Fragment.CREATED, 0, 0, false); 3786 } else { 3787 moveToState(fragment); 3788 } 3789 3790 if (fragment.mView == null) { 3791 throw new IllegalStateException("Fragment " + fname 3792 + " did not create a view."); 3793 } 3794 if (id != 0) { 3795 fragment.mView.setId(id); 3796 } 3797 if (fragment.mView.getTag() == null) { 3798 fragment.mView.setTag(tag); 3799 } 3800 return fragment.mView; 3801 } 3802 3803 @Override 3804 public View onCreateView(String name, Context context, AttributeSet attrs) { 3805 return onCreateView(null, name, context, attrs); 3806 } 3807 3808 LayoutInflater.Factory2 getLayoutInflaterFactory() { 3809 return this; 3810 } 3811 3812 static class FragmentTag { 3813 public static final int[] Fragment = { 3814 0x01010003, 0x010100d0, 0x010100d1 3815 }; 3816 public static final int Fragment_id = 1; 3817 public static final int Fragment_name = 0; 3818 public static final int Fragment_tag = 2; 3819 } 3820 3821 /** 3822 * An add or pop transaction to be scheduled for the UI thread. 3823 */ 3824 interface OpGenerator { 3825 /** 3826 * Generate transactions to add to {@code records} and whether or not the transaction is 3827 * an add or pop to {@code isRecordPop}. 3828 * 3829 * records and isRecordPop must be added equally so that each transaction in records 3830 * matches the boolean for whether or not it is a pop in isRecordPop. 3831 * 3832 * @param records A list to add transactions to. 3833 * @param isRecordPop A list to add whether or not the transactions added to records is 3834 * a pop transaction. 3835 * @return true if something was added or false otherwise. 3836 */ 3837 boolean generateOps(ArrayList<BackStackRecord> records, ArrayList<Boolean> isRecordPop); 3838 } 3839 3840 /** 3841 * A pop operation OpGenerator. This will be run on the UI thread and will generate the 3842 * transactions that will be popped if anything can be popped. 3843 */ 3844 private class PopBackStackState implements OpGenerator { 3845 final String mName; 3846 final int mId; 3847 final int mFlags; 3848 3849 PopBackStackState(String name, int id, int flags) { 3850 mName = name; 3851 mId = id; 3852 mFlags = flags; 3853 } 3854 3855 @Override 3856 public boolean generateOps(ArrayList<BackStackRecord> records, 3857 ArrayList<Boolean> isRecordPop) { 3858 if (mPrimaryNav != null // We have a primary nav fragment 3859 && mId < 0 // No valid id (since they're local) 3860 && mName == null) { // no name to pop to (since they're local) 3861 final FragmentManager childManager = mPrimaryNav.peekChildFragmentManager(); 3862 if (childManager != null && childManager.popBackStackImmediate()) { 3863 // We didn't add any operations for this FragmentManager even though 3864 // a child did do work. 3865 return false; 3866 } 3867 } 3868 return popBackStackState(records, isRecordPop, mName, mId, mFlags); 3869 } 3870 } 3871 3872 /** 3873 * A listener for a postponed transaction. This waits until 3874 * {@link Fragment#startPostponedEnterTransition()} is called or a transaction is started 3875 * that interacts with this one, based on interactions with the fragment container. 3876 */ 3877 static class StartEnterTransitionListener 3878 implements Fragment.OnStartEnterTransitionListener { 3879 private final boolean mIsBack; 3880 private final BackStackRecord mRecord; 3881 private int mNumPostponed; 3882 3883 StartEnterTransitionListener(BackStackRecord record, boolean isBack) { 3884 mIsBack = isBack; 3885 mRecord = record; 3886 } 3887 3888 /** 3889 * Called from {@link Fragment#startPostponedEnterTransition()}, this decreases the 3890 * number of Fragments that are postponed. This may cause the transaction to schedule 3891 * to finish running and run transitions and animations. 3892 */ 3893 @Override 3894 public void onStartEnterTransition() { 3895 mNumPostponed--; 3896 if (mNumPostponed != 0) { 3897 return; 3898 } 3899 mRecord.mManager.scheduleCommit(); 3900 } 3901 3902 /** 3903 * Called from {@link Fragment# 3904 * setOnStartEnterTransitionListener(Fragment.OnStartEnterTransitionListener)}, this 3905 * increases the number of fragments that are postponed as part of this transaction. 3906 */ 3907 @Override 3908 public void startListening() { 3909 mNumPostponed++; 3910 } 3911 3912 /** 3913 * @return true if there are no more postponed fragments as part of the transaction. 3914 */ 3915 public boolean isReady() { 3916 return mNumPostponed == 0; 3917 } 3918 3919 /** 3920 * Completes the transaction and start the animations and transitions. This may skip 3921 * the transitions if this is called before all fragments have called 3922 * {@link Fragment#startPostponedEnterTransition()}. 3923 */ 3924 public void completeTransaction() { 3925 final boolean canceled; 3926 canceled = mNumPostponed > 0; 3927 FragmentManagerImpl manager = mRecord.mManager; 3928 final int numAdded = manager.mAdded.size(); 3929 for (int i = 0; i < numAdded; i++) { 3930 final Fragment fragment = manager.mAdded.get(i); 3931 fragment.setOnStartEnterTransitionListener(null); 3932 if (canceled && fragment.isPostponed()) { 3933 fragment.startPostponedEnterTransition(); 3934 } 3935 } 3936 mRecord.mManager.completeExecute(mRecord, mIsBack, !canceled, true); 3937 } 3938 3939 /** 3940 * Cancels this transaction instead of completing it. That means that the state isn't 3941 * changed, so the pop results in no change to the state. 3942 */ 3943 public void cancelTransaction() { 3944 mRecord.mManager.completeExecute(mRecord, mIsBack, false, false); 3945 } 3946 } 3947 3948 /** 3949 * Contains either an animator or animation. One of these should be null. 3950 */ 3951 private static class AnimationOrAnimator { 3952 public final Animation animation; 3953 public final Animator animator; 3954 3955 private AnimationOrAnimator(Animation animation) { 3956 this.animation = animation; 3957 this.animator = null; 3958 if (animation == null) { 3959 throw new IllegalStateException("Animation cannot be null"); 3960 } 3961 } 3962 3963 private AnimationOrAnimator(Animator animator) { 3964 this.animation = null; 3965 this.animator = animator; 3966 if (animator == null) { 3967 throw new IllegalStateException("Animator cannot be null"); 3968 } 3969 } 3970 } 3971 3972 /** 3973 * Wrap an AnimationListener that can be null. This allows us to chain animation listeners. 3974 */ 3975 private static class AnimationListenerWrapper implements AnimationListener { 3976 private final AnimationListener mWrapped; 3977 3978 private AnimationListenerWrapper(AnimationListener wrapped) { 3979 mWrapped = wrapped; 3980 } 3981 3982 @CallSuper 3983 @Override 3984 public void onAnimationStart(Animation animation) { 3985 if (mWrapped != null) { 3986 mWrapped.onAnimationStart(animation); 3987 } 3988 } 3989 3990 @CallSuper 3991 @Override 3992 public void onAnimationEnd(Animation animation) { 3993 if (mWrapped != null) { 3994 mWrapped.onAnimationEnd(animation); 3995 } 3996 } 3997 3998 @CallSuper 3999 @Override 4000 public void onAnimationRepeat(Animation animation) { 4001 if (mWrapped != null) { 4002 mWrapped.onAnimationRepeat(animation); 4003 } 4004 } 4005 } 4006 4007 /** 4008 * Reset the layer type to LAYER_TYPE_NONE at the end of an animation. 4009 */ 4010 private static class AnimateOnHWLayerIfNeededListener extends AnimationListenerWrapper { 4011 View mView; 4012 4013 AnimateOnHWLayerIfNeededListener(final View v, AnimationListener listener) { 4014 super(listener); 4015 mView = v; 4016 } 4017 4018 @Override 4019 @CallSuper 4020 public void onAnimationEnd(Animation animation) { 4021 // If we're attached to a window, assume we're in the normal performTraversals 4022 // drawing path for Animations running. It's not safe to change the layer type 4023 // during drawing, so post it to the View to run later. If we're not attached 4024 // or we're running on N and above, post it to the view. If we're not on N and 4025 // not attached, do it right now since existing platform versions don't run the 4026 // hwui renderer for detached views off the UI thread making changing layer type 4027 // safe, but posting may not be. 4028 // Prior to N posting to a detached view from a non-Looper thread could cause 4029 // leaks, since the thread-local run queue on a non-Looper thread would never 4030 // be flushed. 4031 if (ViewCompat.isAttachedToWindow(mView) || Build.VERSION.SDK_INT >= 24) { 4032 mView.post(new Runnable() { 4033 @Override 4034 public void run() { 4035 mView.setLayerType(View.LAYER_TYPE_NONE, null); 4036 } 4037 }); 4038 } else { 4039 mView.setLayerType(View.LAYER_TYPE_NONE, null); 4040 } 4041 super.onAnimationEnd(animation); 4042 } 4043 } 4044 4045 /** 4046 * Set the layer type to LAYER_TYPE_HARDWARE while an animator is running. 4047 */ 4048 private static class AnimatorOnHWLayerIfNeededListener extends AnimatorListenerAdapter { 4049 View mView; 4050 4051 AnimatorOnHWLayerIfNeededListener(final View v) { 4052 mView = v; 4053 } 4054 4055 @Override 4056 public void onAnimationStart(Animator animation) { 4057 mView.setLayerType(View.LAYER_TYPE_HARDWARE, null); 4058 } 4059 4060 @Override 4061 public void onAnimationEnd(Animator animation) { 4062 mView.setLayerType(View.LAYER_TYPE_NONE, null); 4063 animation.removeListener(this); 4064 } 4065 } 4066} 4067