FragmentManager.java revision ec9fb2522d42d1ff73ddffa12b318d925c10ab18
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.support.v4.app; 18 19import android.content.Context; 20import android.content.res.Configuration; 21import android.content.res.Resources; 22import android.os.Bundle; 23import android.os.Handler; 24import android.os.Looper; 25import android.os.Parcel; 26import android.os.Parcelable; 27import android.support.v4.util.DebugUtils; 28import android.support.v4.util.LogWriter; 29import android.util.Log; 30import android.util.SparseArray; 31import android.view.animation.AccelerateInterpolator; 32import android.view.animation.AlphaAnimation; 33import android.view.animation.Animation; 34import android.view.animation.AnimationSet; 35import android.view.animation.AnimationUtils; 36import android.view.animation.DecelerateInterpolator; 37import android.view.animation.Interpolator; 38import android.view.animation.ScaleAnimation; 39import android.view.animation.Animation.AnimationListener; 40import android.view.Menu; 41import android.view.MenuInflater; 42import android.view.MenuItem; 43import android.view.View; 44import android.view.ViewGroup; 45 46import java.io.FileDescriptor; 47import java.io.PrintWriter; 48import java.util.ArrayList; 49import java.util.Arrays; 50 51/** 52 * Static library support version of the framework's {@link android.app.FragmentManager}. 53 * Used to write apps that run on platforms prior to Android 3.0. When running 54 * on Android 3.0 or above, this implementation is still used; it does not try 55 * to switch to the framework's implementation. See the framework SDK 56 * documentation for a class overview. 57 * 58 * <p>Your activity must derive from {@link FragmentActivity} to use this. 59 */ 60public abstract class FragmentManager { 61 /** 62 * Representation of an entry on the fragment back stack, as created 63 * with {@link FragmentTransaction#addToBackStack(String) 64 * FragmentTransaction.addToBackStack()}. Entries can later be 65 * retrieved with {@link FragmentManager#getBackStackEntryAt(int) 66 * FragmentManager.getBackStackEntry()}. 67 * 68 * <p>Note that you should never hold on to a BackStackEntry object; 69 * the identifier as returned by {@link #getId} is the only thing that 70 * will be persisted across activity instances. 71 */ 72 public interface BackStackEntry { 73 /** 74 * Return the unique identifier for the entry. This is the only 75 * representation of the entry that will persist across activity 76 * instances. 77 */ 78 public int getId(); 79 80 /** 81 * Get the name that was supplied to 82 * {@link FragmentTransaction#addToBackStack(String) 83 * FragmentTransaction.addToBackStack(String)} when creating this entry. 84 */ 85 public String getName(); 86 87 /** 88 * Return the full bread crumb title resource identifier for the entry, 89 * or 0 if it does not have one. 90 */ 91 public int getBreadCrumbTitleRes(); 92 93 /** 94 * Return the short bread crumb title resource identifier for the entry, 95 * or 0 if it does not have one. 96 */ 97 public int getBreadCrumbShortTitleRes(); 98 99 /** 100 * Return the full bread crumb title for the entry, or null if it 101 * does not have one. 102 */ 103 public CharSequence getBreadCrumbTitle(); 104 105 /** 106 * Return the short bread crumb title for the entry, or null if it 107 * does not have one. 108 */ 109 public CharSequence getBreadCrumbShortTitle(); 110 } 111 112 /** 113 * Interface to watch for changes to the back stack. 114 */ 115 public interface OnBackStackChangedListener { 116 /** 117 * Called whenever the contents of the back stack change. 118 */ 119 public void onBackStackChanged(); 120 } 121 122 /** 123 * Start a series of edit operations on the Fragments associated with 124 * this FragmentManager. 125 * 126 * <p>Note: A fragment transaction can only be created/committed prior 127 * to an activity saving its state. If you try to commit a transaction 128 * after {@link FragmentActivity#onSaveInstanceState FragmentActivity.onSaveInstanceState()} 129 * (and prior to a following {@link FragmentActivity#onStart FragmentActivity.onStart} 130 * or {@link FragmentActivity#onResume FragmentActivity.onResume()}, you will get an error. 131 * This is because the framework takes care of saving your current fragments 132 * in the state, and if changes are made after the state is saved then they 133 * will be lost.</p> 134 */ 135 public abstract FragmentTransaction beginTransaction(); 136 137 /** @hide -- remove once prebuilts are in. */ 138 @Deprecated 139 public FragmentTransaction openTransaction() { 140 return beginTransaction(); 141 } 142 143 /** 144 * After a {@link FragmentTransaction} is committed with 145 * {@link FragmentTransaction#commit FragmentTransaction.commit()}, it 146 * is scheduled to be executed asynchronously on the process's main thread. 147 * If you want to immediately executing any such pending operations, you 148 * can call this function (only from the main thread) to do so. Note that 149 * all callbacks and other related behavior will be done from within this 150 * call, so be careful about where this is called from. 151 * 152 * @return Returns true if there were any pending transactions to be 153 * executed. 154 */ 155 public abstract boolean executePendingTransactions(); 156 157 /** 158 * Finds a fragment that was identified by the given id either when inflated 159 * from XML or as the container ID when added in a transaction. This first 160 * searches through fragments that are currently added to the manager's 161 * activity; if no such fragment is found, then all fragments currently 162 * on the back stack associated with this ID are searched. 163 * @return The fragment if found or null otherwise. 164 */ 165 public abstract Fragment findFragmentById(int id); 166 167 /** 168 * Finds a fragment that was identified by the given tag either when inflated 169 * from XML or as supplied when added in a transaction. This first 170 * searches through fragments that are currently added to the manager's 171 * activity; if no such fragment is found, then all fragments currently 172 * on the back stack are searched. 173 * @return The fragment if found or null otherwise. 174 */ 175 public abstract Fragment findFragmentByTag(String tag); 176 177 /** 178 * Flag for {@link #popBackStack(String, int)} 179 * and {@link #popBackStack(int, int)}: If set, and the name or ID of 180 * a back stack entry has been supplied, then all matching entries will 181 * be consumed until one that doesn't match is found or the bottom of 182 * the stack is reached. Otherwise, all entries up to but not including that entry 183 * will be removed. 184 */ 185 public static final int POP_BACK_STACK_INCLUSIVE = 1<<0; 186 187 /** 188 * Pop the top state off the back stack. Returns true if there was one 189 * to pop, else false. This function is asynchronous -- it enqueues the 190 * request to pop, but the action will not be performed until the application 191 * returns to its event loop. 192 */ 193 public abstract void popBackStack(); 194 195 /** 196 * Like {@link #popBackStack()}, but performs the operation immediately 197 * inside of the call. This is like calling {@link #executePendingTransactions()} 198 * afterwards. 199 * @return Returns true if there was something popped, else false. 200 */ 201 public abstract boolean popBackStackImmediate(); 202 203 /** 204 * Pop the last fragment transition from the manager's fragment 205 * back stack. If there is nothing to pop, false is returned. 206 * This function is asynchronous -- it enqueues the 207 * request to pop, but the action will not be performed until the application 208 * returns to its event loop. 209 * 210 * @param name If non-null, this is the name of a previous back state 211 * to look for; if found, all states up to that state will be popped. The 212 * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 213 * the named state itself is popped. If null, only the top state is popped. 214 * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 215 */ 216 public abstract void popBackStack(String name, int flags); 217 218 /** 219 * Like {@link #popBackStack(String, int)}, but performs the operation immediately 220 * inside of the call. This is like calling {@link #executePendingTransactions()} 221 * afterwards. 222 * @return Returns true if there was something popped, else false. 223 */ 224 public abstract boolean popBackStackImmediate(String name, int flags); 225 226 /** 227 * Pop all back stack states up to the one with the given identifier. 228 * This function is asynchronous -- it enqueues the 229 * request to pop, but the action will not be performed until the application 230 * returns to its event loop. 231 * 232 * @param id Identifier of the stated to be popped. If no identifier exists, 233 * false is returned. 234 * The identifier is the number returned by 235 * {@link FragmentTransaction#commit() FragmentTransaction.commit()}. The 236 * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 237 * the named state itself is popped. 238 * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 239 */ 240 public abstract void popBackStack(int id, int flags); 241 242 /** 243 * Like {@link #popBackStack(int, int)}, but performs the operation immediately 244 * inside of the call. This is like calling {@link #executePendingTransactions()} 245 * afterwards. 246 * @return Returns true if there was something popped, else false. 247 */ 248 public abstract boolean popBackStackImmediate(int id, int flags); 249 250 /** 251 * Return the number of entries currently in the back stack. 252 */ 253 public abstract int getBackStackEntryCount(); 254 255 /** 256 * Return the BackStackEntry at index <var>index</var> in the back stack; 257 * entries start index 0 being the bottom of the stack. 258 */ 259 public abstract BackStackEntry getBackStackEntryAt(int index); 260 261 /** 262 * Add a new listener for changes to the fragment back stack. 263 */ 264 public abstract void addOnBackStackChangedListener(OnBackStackChangedListener listener); 265 266 /** 267 * Remove a listener that was previously added with 268 * {@link #addOnBackStackChangedListener(OnBackStackChangedListener)}. 269 */ 270 public abstract void removeOnBackStackChangedListener(OnBackStackChangedListener listener); 271 272 /** 273 * Put a reference to a fragment in a Bundle. This Bundle can be 274 * persisted as saved state, and when later restoring 275 * {@link #getFragment(Bundle, String)} will return the current 276 * instance of the same fragment. 277 * 278 * @param bundle The bundle in which to put the fragment reference. 279 * @param key The name of the entry in the bundle. 280 * @param fragment The Fragment whose reference is to be stored. 281 */ 282 public abstract void putFragment(Bundle bundle, String key, Fragment fragment); 283 284 /** 285 * Retrieve the current Fragment instance for a reference previously 286 * placed with {@link #putFragment(Bundle, String, Fragment)}. 287 * 288 * @param bundle The bundle from which to retrieve the fragment reference. 289 * @param key The name of the entry in the bundle. 290 * @return Returns the current Fragment instance that is associated with 291 * the given reference. 292 */ 293 public abstract Fragment getFragment(Bundle bundle, String key); 294 295 /** 296 * Save the current instance state of the given Fragment. This can be 297 * used later when creating a new instance of the Fragment and adding 298 * it to the fragment manager, to have it create itself to match the 299 * current state returned here. Note that there are limits on how 300 * this can be used: 301 * 302 * <ul> 303 * <li>The Fragment must currently be attached to the FragmentManager. 304 * <li>A new Fragment created using this saved state must be the same class 305 * type as the Fragment it was created from. 306 * <li>The saved state can not contain dependencies on other fragments -- 307 * that is it can't use {@link #putFragment(Bundle, String, Fragment)} to 308 * store a fragment reference because that reference may not be valid when 309 * this saved state is later used. Likewise the Fragment's target and 310 * result code are not included in this state. 311 * </ul> 312 * 313 * @param f The Fragment whose state is to be saved. 314 * @return The generated state. This will be null if there was no 315 * interesting state created by the fragment. 316 */ 317 public abstract Fragment.SavedState saveFragmentInstanceState(Fragment f); 318 319 /** 320 * Print the FragmentManager's state into the given stream. 321 * 322 * @param prefix Text to print at the front of each line. 323 * @param fd The raw file descriptor that the dump is being sent to. 324 * @param writer A PrintWriter to which the dump is to be set. 325 * @param args Additional arguments to the dump request. 326 */ 327 public abstract void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args); 328 329 /** 330 * Control whether the framework's internal fragment manager debugging 331 * logs are turned on. If enabled, you will see output in logcat as 332 * the framework performs fragment operations. 333 */ 334 public static void enableDebugLogging(boolean enabled) { 335 FragmentManagerImpl.DEBUG = enabled; 336 } 337} 338 339final class FragmentManagerState implements Parcelable { 340 FragmentState[] mActive; 341 int[] mAdded; 342 BackStackState[] mBackStack; 343 344 public FragmentManagerState() { 345 } 346 347 public FragmentManagerState(Parcel in) { 348 mActive = in.createTypedArray(FragmentState.CREATOR); 349 mAdded = in.createIntArray(); 350 mBackStack = in.createTypedArray(BackStackState.CREATOR); 351 } 352 353 public int describeContents() { 354 return 0; 355 } 356 357 public void writeToParcel(Parcel dest, int flags) { 358 dest.writeTypedArray(mActive, flags); 359 dest.writeIntArray(mAdded); 360 dest.writeTypedArray(mBackStack, flags); 361 } 362 363 public static final Parcelable.Creator<FragmentManagerState> CREATOR 364 = new Parcelable.Creator<FragmentManagerState>() { 365 public FragmentManagerState createFromParcel(Parcel in) { 366 return new FragmentManagerState(in); 367 } 368 369 public FragmentManagerState[] newArray(int size) { 370 return new FragmentManagerState[size]; 371 } 372 }; 373} 374 375/** 376 * Container for fragments associated with an activity. 377 */ 378final class FragmentManagerImpl extends FragmentManager { 379 static boolean DEBUG = false; 380 static final String TAG = "FragmentManager"; 381 382 static final boolean HONEYCOMB = android.os.Build.VERSION.SDK_INT >= 11; 383 384 static final String TARGET_REQUEST_CODE_STATE_TAG = "android:target_req_state"; 385 static final String TARGET_STATE_TAG = "android:target_state"; 386 static final String VIEW_STATE_TAG = "android:view_state"; 387 static final String USER_VISIBLE_HINT_TAG = "android:user_visible_hint"; 388 389 ArrayList<Runnable> mPendingActions; 390 Runnable[] mTmpActions; 391 boolean mExecutingActions; 392 393 ArrayList<Fragment> mActive; 394 ArrayList<Fragment> mAdded; 395 ArrayList<Integer> mAvailIndices; 396 ArrayList<BackStackRecord> mBackStack; 397 ArrayList<Fragment> mCreatedMenus; 398 399 // Must be accessed while locked. 400 ArrayList<BackStackRecord> mBackStackIndices; 401 ArrayList<Integer> mAvailBackStackIndices; 402 403 ArrayList<OnBackStackChangedListener> mBackStackChangeListeners; 404 405 int mCurState = Fragment.INITIALIZING; 406 FragmentActivity mActivity; 407 408 boolean mNeedMenuInvalidate; 409 boolean mStateSaved; 410 boolean mDestroyed; 411 String mNoTransactionsBecause; 412 boolean mHavePendingDeferredStart; 413 414 // Temporary vars for state save and restore. 415 Bundle mStateBundle = null; 416 SparseArray<Parcelable> mStateArray = null; 417 418 Runnable mExecCommit = new Runnable() { 419 @Override 420 public void run() { 421 execPendingActions(); 422 } 423 }; 424 425 private void logViewHierarchy(String prefix, View view) { 426 StringBuilder builder = new StringBuilder(128); 427 builder.append(prefix); 428 DebugUtils.buildShortClassTag(view, builder); 429 int id = view.getId(); 430 if (id != -1) { 431 builder.append(" #"); 432 builder.append(Integer.toHexString(id)); 433 if (id != 0 && id != -1) { 434 try { 435 String pkgname; 436 switch (id&0xff000000) { 437 case 0x7f000000: 438 pkgname="app"; 439 break; 440 case 0x01000000: 441 pkgname="android"; 442 break; 443 default: 444 pkgname = view.getResources().getResourcePackageName(id); 445 break; 446 } 447 String typename = view.getResources().getResourceTypeName(id); 448 String entryname = view.getResources().getResourceEntryName(id); 449 builder.append(" ("); 450 builder.append(pkgname); 451 builder.append(":"); 452 builder.append(typename); 453 builder.append("/"); 454 builder.append(entryname); 455 builder.append(")"); 456 } catch (Resources.NotFoundException e) { 457 } 458 } 459 } 460 Object tag = view.getTag(); 461 if (tag != null) { 462 builder.append(" "); 463 builder.append(tag); 464 } 465 builder.append("}"); 466 Log.e(TAG, builder.toString()); 467 468 if (!(view instanceof ViewGroup)) { 469 return; 470 } 471 ViewGroup grp = (ViewGroup)view; 472 final int N = grp.getChildCount(); 473 if (N <= 0) { 474 return; 475 } 476 prefix = prefix + " "; 477 for (int i=0; i<N; i++) { 478 logViewHierarchy(prefix, grp.getChildAt(i)); 479 } 480 } 481 482 private void throwNoViewFound(Fragment f) { 483 String msg = "No view found for id 0x" 484 + Integer.toHexString(f.mContainerId) + " (" 485 + f.getResources().getResourceName(f.mContainerId) 486 + ") for fragment " + f; 487 Log.e(TAG, msg); 488 Log.e(TAG, "Activity state:"); 489 if (f.getActivity() != null) { 490 try { 491 LogWriter logw = new LogWriter(TAG); 492 PrintWriter pw = new PrintWriter(logw); 493 f.getActivity().dump(" ", null, pw, new String[] { }); 494 } catch (Exception e) { 495 Log.e(TAG, "Failed dumping state", e); 496 } 497 } else { 498 Log.e(TAG, " NULL ACTIVITY!"); 499 } 500 Log.e(TAG, "View hierarchy:"); 501 if (f.getActivity() != null) { 502 try { 503 logViewHierarchy(" ", f.getActivity().getWindow().getDecorView()); 504 } catch (Exception e) { 505 Log.e(TAG, "Failed dumping view hierarchy", e); 506 } 507 } else { 508 Log.e(TAG, " NULL ACTIVITY!"); 509 } 510 throw new IllegalArgumentException(msg); 511 } 512 513 @Override 514 public FragmentTransaction beginTransaction() { 515 return new BackStackRecord(this); 516 } 517 518 @Override 519 public boolean executePendingTransactions() { 520 return execPendingActions(); 521 } 522 523 @Override 524 public void popBackStack() { 525 enqueueAction(new Runnable() { 526 @Override public void run() { 527 popBackStackState(mActivity.mHandler, null, -1, 0); 528 } 529 }, false); 530 } 531 532 @Override 533 public boolean popBackStackImmediate() { 534 checkStateLoss(); 535 executePendingTransactions(); 536 return popBackStackState(mActivity.mHandler, null, -1, 0); 537 } 538 539 @Override 540 public void popBackStack(final String name, final int flags) { 541 enqueueAction(new Runnable() { 542 @Override public void run() { 543 popBackStackState(mActivity.mHandler, name, -1, flags); 544 } 545 }, false); 546 } 547 548 @Override 549 public boolean popBackStackImmediate(String name, int flags) { 550 checkStateLoss(); 551 executePendingTransactions(); 552 return popBackStackState(mActivity.mHandler, name, -1, flags); 553 } 554 555 @Override 556 public void popBackStack(final int id, final int flags) { 557 if (id < 0) { 558 throw new IllegalArgumentException("Bad id: " + id); 559 } 560 enqueueAction(new Runnable() { 561 @Override public void run() { 562 popBackStackState(mActivity.mHandler, null, id, flags); 563 } 564 }, false); 565 } 566 567 @Override 568 public boolean popBackStackImmediate(int id, int flags) { 569 checkStateLoss(); 570 executePendingTransactions(); 571 if (id < 0) { 572 throw new IllegalArgumentException("Bad id: " + id); 573 } 574 return popBackStackState(mActivity.mHandler, null, id, flags); 575 } 576 577 @Override 578 public int getBackStackEntryCount() { 579 return mBackStack != null ? mBackStack.size() : 0; 580 } 581 582 @Override 583 public BackStackEntry getBackStackEntryAt(int index) { 584 return mBackStack.get(index); 585 } 586 587 @Override 588 public void addOnBackStackChangedListener(OnBackStackChangedListener listener) { 589 if (mBackStackChangeListeners == null) { 590 mBackStackChangeListeners = new ArrayList<OnBackStackChangedListener>(); 591 } 592 mBackStackChangeListeners.add(listener); 593 } 594 595 @Override 596 public void removeOnBackStackChangedListener(OnBackStackChangedListener listener) { 597 if (mBackStackChangeListeners != null) { 598 mBackStackChangeListeners.remove(listener); 599 } 600 } 601 602 @Override 603 public void putFragment(Bundle bundle, String key, Fragment fragment) { 604 if (fragment.mIndex < 0) { 605 throw new IllegalStateException("Fragment " + fragment 606 + " is not currently in the FragmentManager"); 607 } 608 bundle.putInt(key, fragment.mIndex); 609 } 610 611 @Override 612 public Fragment getFragment(Bundle bundle, String key) { 613 int index = bundle.getInt(key, -1); 614 if (index == -1) { 615 return null; 616 } 617 if (index >= mActive.size()) { 618 throw new IllegalStateException("Fragement no longer exists for key " 619 + key + ": index " + index); 620 } 621 Fragment f = mActive.get(index); 622 if (f == null) { 623 throw new IllegalStateException("Fragement no longer exists for key " 624 + key + ": index " + index); 625 } 626 return f; 627 } 628 629 @Override 630 public Fragment.SavedState saveFragmentInstanceState(Fragment fragment) { 631 if (fragment.mIndex < 0) { 632 throw new IllegalStateException("Fragment " + fragment 633 + " is not currently in the FragmentManager"); 634 } 635 if (fragment.mState > Fragment.INITIALIZING) { 636 Bundle result = saveFragmentBasicState(fragment); 637 return result != null ? new Fragment.SavedState(result) : null; 638 } 639 return null; 640 } 641 642 @Override 643 public String toString() { 644 StringBuilder sb = new StringBuilder(128); 645 sb.append("FragmentManager{"); 646 sb.append(Integer.toHexString(System.identityHashCode(this))); 647 sb.append(" in "); 648 DebugUtils.buildShortClassTag(mActivity, sb); 649 sb.append("}}"); 650 return sb.toString(); 651 } 652 653 @Override 654 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 655 String innerPrefix = prefix + " "; 656 657 int N; 658 if (mActive != null) { 659 N = mActive.size(); 660 if (N > 0) { 661 writer.print(prefix); writer.print("Active Fragments in "); 662 writer.print(Integer.toHexString(System.identityHashCode(this))); 663 writer.println(":"); 664 for (int i=0; i<N; i++) { 665 Fragment f = mActive.get(i); 666 writer.print(prefix); writer.print(" #"); writer.print(i); 667 writer.print(": "); writer.println(f); 668 if (f != null) { 669 f.dump(innerPrefix, fd, writer, args); 670 } 671 } 672 } 673 } 674 675 if (mAdded != null) { 676 N = mAdded.size(); 677 if (N > 0) { 678 writer.print(prefix); writer.println("Added Fragments:"); 679 for (int i=0; i<N; i++) { 680 Fragment f = mAdded.get(i); 681 writer.print(prefix); writer.print(" #"); writer.print(i); 682 writer.print(": "); writer.println(f.toString()); 683 } 684 } 685 } 686 687 if (mCreatedMenus != null) { 688 N = mCreatedMenus.size(); 689 if (N > 0) { 690 writer.print(prefix); writer.println("Fragments Created Menus:"); 691 for (int i=0; i<N; i++) { 692 Fragment f = mCreatedMenus.get(i); 693 writer.print(prefix); writer.print(" #"); writer.print(i); 694 writer.print(": "); writer.println(f.toString()); 695 } 696 } 697 } 698 699 if (mBackStack != null) { 700 N = mBackStack.size(); 701 if (N > 0) { 702 writer.print(prefix); writer.println("Back Stack:"); 703 for (int i=0; i<N; i++) { 704 BackStackRecord bs = mBackStack.get(i); 705 writer.print(prefix); writer.print(" #"); writer.print(i); 706 writer.print(": "); writer.println(bs.toString()); 707 bs.dump(innerPrefix, fd, writer, args); 708 } 709 } 710 } 711 712 synchronized (this) { 713 if (mBackStackIndices != null) { 714 N = mBackStackIndices.size(); 715 if (N > 0) { 716 writer.print(prefix); writer.println("Back Stack Indices:"); 717 for (int i=0; i<N; i++) { 718 BackStackRecord bs = mBackStackIndices.get(i); 719 writer.print(prefix); writer.print(" #"); writer.print(i); 720 writer.print(": "); writer.println(bs); 721 } 722 } 723 } 724 725 if (mAvailBackStackIndices != null && mAvailBackStackIndices.size() > 0) { 726 writer.print(prefix); writer.print("mAvailBackStackIndices: "); 727 writer.println(Arrays.toString(mAvailBackStackIndices.toArray())); 728 } 729 } 730 731 if (mPendingActions != null) { 732 N = mPendingActions.size(); 733 if (N > 0) { 734 writer.print(prefix); writer.println("Pending Actions:"); 735 for (int i=0; i<N; i++) { 736 Runnable r = mPendingActions.get(i); 737 writer.print(prefix); writer.print(" #"); writer.print(i); 738 writer.print(": "); writer.println(r); 739 } 740 } 741 } 742 743 writer.print(prefix); writer.println("FragmentManager misc state:"); 744 writer.print(prefix); writer.print(" mCurState="); writer.print(mCurState); 745 writer.print(" mStateSaved="); writer.print(mStateSaved); 746 writer.print(" mDestroyed="); writer.println(mDestroyed); 747 if (mNeedMenuInvalidate) { 748 writer.print(prefix); writer.print(" mNeedMenuInvalidate="); 749 writer.println(mNeedMenuInvalidate); 750 } 751 if (mNoTransactionsBecause != null) { 752 writer.print(prefix); writer.print(" mNoTransactionsBecause="); 753 writer.println(mNoTransactionsBecause); 754 } 755 if (mAvailIndices != null && mAvailIndices.size() > 0) { 756 writer.print(prefix); writer.print(" mAvailIndices: "); 757 writer.println(Arrays.toString(mAvailIndices.toArray())); 758 } 759 } 760 761 static final Interpolator DECELERATE_QUINT = new DecelerateInterpolator(2.5f); 762 static final Interpolator DECELERATE_CUBIC = new DecelerateInterpolator(1.5f); 763 static final Interpolator ACCELERATE_QUINT = new AccelerateInterpolator(2.5f); 764 static final Interpolator ACCELERATE_CUBIC = new AccelerateInterpolator(1.5f); 765 766 static final int ANIM_DUR = 220; 767 768 static Animation makeOpenCloseAnimation(Context context, float startScale, 769 float endScale, float startAlpha, float endAlpha) { 770 AnimationSet set = new AnimationSet(false); 771 ScaleAnimation scale = new ScaleAnimation(startScale, endScale, startScale, endScale, 772 Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f); 773 scale.setInterpolator(DECELERATE_QUINT); 774 scale.setDuration(ANIM_DUR); 775 set.addAnimation(scale); 776 AlphaAnimation alpha = new AlphaAnimation(startAlpha, endAlpha); 777 alpha.setInterpolator(DECELERATE_CUBIC); 778 alpha.setDuration(ANIM_DUR); 779 set.addAnimation(alpha); 780 return set; 781 } 782 783 static Animation makeFadeAnimation(Context context, float start, float end) { 784 AlphaAnimation anim = new AlphaAnimation(start, end); 785 anim.setInterpolator(DECELERATE_CUBIC); 786 anim.setDuration(ANIM_DUR); 787 return anim; 788 } 789 790 Animation loadAnimation(Fragment fragment, int transit, boolean enter, 791 int transitionStyle) { 792 Animation animObj = fragment.onCreateAnimation(transit, enter, 793 fragment.mNextAnim); 794 if (animObj != null) { 795 return animObj; 796 } 797 798 if (fragment.mNextAnim != 0) { 799 Animation anim = AnimationUtils.loadAnimation(mActivity, fragment.mNextAnim); 800 if (anim != null) { 801 return anim; 802 } 803 } 804 805 if (transit == 0) { 806 return null; 807 } 808 809 int styleIndex = transitToStyleIndex(transit, enter); 810 if (styleIndex < 0) { 811 return null; 812 } 813 814 switch (styleIndex) { 815 case ANIM_STYLE_OPEN_ENTER: 816 return makeOpenCloseAnimation(mActivity, 1.125f, 1.0f, 0, 1); 817 case ANIM_STYLE_OPEN_EXIT: 818 return makeOpenCloseAnimation(mActivity, 1.0f, .975f, 1, 0); 819 case ANIM_STYLE_CLOSE_ENTER: 820 return makeOpenCloseAnimation(mActivity, .975f, 1.0f, 0, 1); 821 case ANIM_STYLE_CLOSE_EXIT: 822 return makeOpenCloseAnimation(mActivity, 1.0f, 1.075f, 1, 0); 823 case ANIM_STYLE_FADE_ENTER: 824 return makeFadeAnimation(mActivity, 0, 1); 825 case ANIM_STYLE_FADE_EXIT: 826 return makeFadeAnimation(mActivity, 1, 0); 827 } 828 829 if (transitionStyle == 0 && mActivity.getWindow() != null) { 830 transitionStyle = mActivity.getWindow().getAttributes().windowAnimations; 831 } 832 if (transitionStyle == 0) { 833 return null; 834 } 835 836 //TypedArray attrs = mActivity.obtainStyledAttributes(transitionStyle, 837 // com.android.internal.R.styleable.FragmentAnimation); 838 //int anim = attrs.getResourceId(styleIndex, 0); 839 //attrs.recycle(); 840 841 //if (anim == 0) { 842 // return null; 843 //} 844 845 //return AnimatorInflater.loadAnimator(mActivity, anim); 846 return null; 847 } 848 849 public void performPendingDeferredStart(Fragment f) { 850 if (f.mDeferStart) { 851 if (mExecutingActions) { 852 // Wait until we're done executing our pending transactions 853 mHavePendingDeferredStart = true; 854 return; 855 } 856 f.mDeferStart = false; 857 moveToState(f, mCurState, 0, 0, false); 858 } 859 } 860 861 void moveToState(Fragment f, int newState, int transit, int transitionStyle, 862 boolean keepActive) { 863 // Fragments that are not currently added will sit in the onCreate() state. 864 if (!f.mAdded && newState > Fragment.CREATED) { 865 newState = Fragment.CREATED; 866 } 867 if (f.mRemoving && newState > f.mState) { 868 // While removing a fragment, we can't change it to a higher state. 869 newState = f.mState; 870 } 871 // Defer start if requested; don't allow it to move to STARTED or higher 872 // if it's not already started. 873 if (f.mDeferStart && f.mState < Fragment.STARTED && newState > Fragment.STOPPED) { 874 newState = Fragment.STOPPED; 875 } 876 if (f.mState < newState) { 877 // For fragments that are created from a layout, when restoring from 878 // state we don't want to allow them to be created until they are 879 // being reloaded from the layout. 880 if (f.mFromLayout && !f.mInLayout) { 881 return; 882 } 883 if (f.mAnimatingAway != null) { 884 // The fragment is currently being animated... but! Now we 885 // want to move our state back up. Give up on waiting for the 886 // animation, move to whatever the final state should be once 887 // the animation is done, and then we can proceed from there. 888 f.mAnimatingAway = null; 889 moveToState(f, f.mStateAfterAnimating, 0, 0, true); 890 } 891 switch (f.mState) { 892 case Fragment.INITIALIZING: 893 if (DEBUG) Log.v(TAG, "moveto CREATED: " + f); 894 if (f.mSavedFragmentState != null) { 895 f.mSavedViewState = f.mSavedFragmentState.getSparseParcelableArray( 896 FragmentManagerImpl.VIEW_STATE_TAG); 897 f.mTarget = getFragment(f.mSavedFragmentState, 898 FragmentManagerImpl.TARGET_STATE_TAG); 899 if (f.mTarget != null) { 900 f.mTargetRequestCode = f.mSavedFragmentState.getInt( 901 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0); 902 } 903 f.mUserVisibleHint = f.mSavedFragmentState.getBoolean( 904 FragmentManagerImpl.USER_VISIBLE_HINT_TAG, true); 905 if (!f.mUserVisibleHint) { 906 f.mDeferStart = true; 907 if (newState > Fragment.STOPPED) { 908 newState = Fragment.STOPPED; 909 } 910 } 911 } 912 f.mActivity = mActivity; 913 f.mFragmentManager = mActivity.mFragments; 914 f.mCalled = false; 915 f.onAttach(mActivity); 916 if (!f.mCalled) { 917 throw new SuperNotCalledException("Fragment " + f 918 + " did not call through to super.onAttach()"); 919 } 920 mActivity.onAttachFragment(f); 921 922 if (!f.mRetaining) { 923 f.mCalled = false; 924 f.onCreate(f.mSavedFragmentState); 925 if (!f.mCalled) { 926 throw new SuperNotCalledException("Fragment " + f 927 + " did not call through to super.onCreate()"); 928 } 929 } 930 f.mRetaining = false; 931 if (f.mFromLayout) { 932 // For fragments that are part of the content view 933 // layout, we need to instantiate the view immediately 934 // and the inflater will take care of adding it. 935 f.mView = f.onCreateView(f.getLayoutInflater(f.mSavedFragmentState), 936 null, f.mSavedFragmentState); 937 if (f.mView != null) { 938 f.mInnerView = f.mView; 939 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 940 if (f.mHidden) f.mView.setVisibility(View.GONE); 941 f.onViewCreated(f.mView, f.mSavedFragmentState); 942 } else { 943 f.mInnerView = null; 944 } 945 } 946 case Fragment.CREATED: 947 if (newState > Fragment.CREATED) { 948 if (DEBUG) Log.v(TAG, "moveto ACTIVITY_CREATED: " + f); 949 if (!f.mFromLayout) { 950 ViewGroup container = null; 951 if (f.mContainerId != 0) { 952 container = (ViewGroup)mActivity.findViewById(f.mContainerId); 953 if (container == null && !f.mRestored) { 954 throwNoViewFound(f); 955 } 956 } 957 f.mContainer = container; 958 f.mView = f.onCreateView(f.getLayoutInflater(f.mSavedFragmentState), 959 container, f.mSavedFragmentState); 960 if (f.mView != null) { 961 f.mInnerView = f.mView; 962 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 963 if (container != null) { 964 Animation anim = loadAnimation(f, transit, true, 965 transitionStyle); 966 if (anim != null) { 967 f.mView.startAnimation(anim); 968 } 969 container.addView(f.mView); 970 } 971 if (f.mHidden) f.mView.setVisibility(View.GONE); 972 f.onViewCreated(f.mView, f.mSavedFragmentState); 973 } else { 974 f.mInnerView = null; 975 } 976 } 977 978 f.mCalled = false; 979 f.onActivityCreated(f.mSavedFragmentState); 980 if (!f.mCalled) { 981 throw new SuperNotCalledException("Fragment " + f 982 + " did not call through to super.onActivityCreated()"); 983 } 984 if (f.mView != null) { 985 f.restoreViewState(); 986 } 987 f.mSavedFragmentState = null; 988 } 989 case Fragment.ACTIVITY_CREATED: 990 case Fragment.STOPPED: 991 if (newState > Fragment.STOPPED) { 992 if (DEBUG) Log.v(TAG, "moveto STARTED: " + f); 993 f.mCalled = false; 994 f.performStart(); 995 if (!f.mCalled) { 996 throw new SuperNotCalledException("Fragment " + f 997 + " did not call through to super.onStart()"); 998 } 999 } 1000 case Fragment.STARTED: 1001 if (newState > Fragment.STARTED) { 1002 if (DEBUG) Log.v(TAG, "moveto RESUMED: " + f); 1003 f.mCalled = false; 1004 f.mResumed = true; 1005 f.onResume(); 1006 if (!f.mCalled) { 1007 throw new SuperNotCalledException("Fragment " + f 1008 + " did not call through to super.onResume()"); 1009 } 1010 f.mSavedFragmentState = null; 1011 f.mSavedViewState = null; 1012 } 1013 } 1014 } else if (f.mState > newState) { 1015 switch (f.mState) { 1016 case Fragment.RESUMED: 1017 if (newState < Fragment.RESUMED) { 1018 if (DEBUG) Log.v(TAG, "movefrom RESUMED: " + f); 1019 f.mCalled = false; 1020 f.onPause(); 1021 if (!f.mCalled) { 1022 throw new SuperNotCalledException("Fragment " + f 1023 + " did not call through to super.onPause()"); 1024 } 1025 f.mResumed = false; 1026 } 1027 case Fragment.STARTED: 1028 if (newState < Fragment.STARTED) { 1029 if (DEBUG) Log.v(TAG, "movefrom STARTED: " + f); 1030 f.mCalled = false; 1031 f.performStop(); 1032 if (!f.mCalled) { 1033 throw new SuperNotCalledException("Fragment " + f 1034 + " did not call through to super.onStop()"); 1035 } 1036 } 1037 case Fragment.STOPPED: 1038 if (newState < Fragment.STOPPED) { 1039 if (DEBUG) Log.v(TAG, "movefrom STOPPED: " + f); 1040 f.performReallyStop(); 1041 } 1042 case Fragment.ACTIVITY_CREATED: 1043 if (newState < Fragment.ACTIVITY_CREATED) { 1044 if (DEBUG) Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f); 1045 if (f.mView != null) { 1046 // Need to save the current view state if not 1047 // done already. 1048 if (!mActivity.isFinishing() && f.mSavedViewState == null) { 1049 saveFragmentViewState(f); 1050 } 1051 } 1052 f.mCalled = false; 1053 f.performDestroyView(); 1054 if (!f.mCalled) { 1055 throw new SuperNotCalledException("Fragment " + f 1056 + " did not call through to super.onDestroyView()"); 1057 } 1058 if (f.mView != null && f.mContainer != null) { 1059 Animation anim = null; 1060 if (mCurState > Fragment.INITIALIZING && !mDestroyed) { 1061 anim = loadAnimation(f, transit, false, 1062 transitionStyle); 1063 } 1064 if (anim != null) { 1065 final Fragment fragment = f; 1066 f.mAnimatingAway = f.mView; 1067 f.mStateAfterAnimating = newState; 1068 anim.setAnimationListener(new AnimationListener() { 1069 @Override 1070 public void onAnimationEnd(Animation animation) { 1071 if (fragment.mAnimatingAway != null) { 1072 fragment.mAnimatingAway = null; 1073 moveToState(fragment, fragment.mStateAfterAnimating, 1074 0, 0, false); 1075 } 1076 } 1077 @Override 1078 public void onAnimationRepeat(Animation animation) { 1079 } 1080 @Override 1081 public void onAnimationStart(Animation animation) { 1082 } 1083 }); 1084 f.mView.startAnimation(anim); 1085 } 1086 f.mContainer.removeView(f.mView); 1087 } 1088 f.mContainer = null; 1089 f.mView = null; 1090 f.mInnerView = null; 1091 } 1092 case Fragment.CREATED: 1093 if (newState < Fragment.CREATED) { 1094 if (mDestroyed) { 1095 if (f.mAnimatingAway != null) { 1096 // The fragment's containing activity is 1097 // being destroyed, but this fragment is 1098 // currently animating away. Stop the 1099 // animation right now -- it is not needed, 1100 // and we can't wait any more on destroying 1101 // the fragment. 1102 View v = f.mAnimatingAway; 1103 f.mAnimatingAway = null; 1104 v.clearAnimation(); 1105 } 1106 } 1107 if (f.mAnimatingAway != null) { 1108 // We are waiting for the fragment's view to finish 1109 // animating away. Just make a note of the state 1110 // the fragment now should move to once the animation 1111 // is done. 1112 f.mStateAfterAnimating = newState; 1113 newState = Fragment.CREATED; 1114 } else { 1115 if (DEBUG) Log.v(TAG, "movefrom CREATED: " + f); 1116 if (!f.mRetaining) { 1117 f.mCalled = false; 1118 f.onDestroy(); 1119 if (!f.mCalled) { 1120 throw new SuperNotCalledException("Fragment " + f 1121 + " did not call through to super.onDestroy()"); 1122 } 1123 } 1124 1125 f.mCalled = false; 1126 f.onDetach(); 1127 if (!f.mCalled) { 1128 throw new SuperNotCalledException("Fragment " + f 1129 + " did not call through to super.onDetach()"); 1130 } 1131 if (!keepActive) { 1132 if (!f.mRetaining) { 1133 makeInactive(f); 1134 } else { 1135 f.mActivity = null; 1136 f.mFragmentManager = null; 1137 } 1138 } 1139 } 1140 } 1141 } 1142 } 1143 1144 f.mState = newState; 1145 } 1146 1147 void moveToState(Fragment f) { 1148 moveToState(f, mCurState, 0, 0, false); 1149 } 1150 1151 void moveToState(int newState, boolean always) { 1152 moveToState(newState, 0, 0, always); 1153 } 1154 1155 void moveToState(int newState, int transit, int transitStyle, boolean always) { 1156 if (mActivity == null && newState != Fragment.INITIALIZING) { 1157 throw new IllegalStateException("No activity"); 1158 } 1159 1160 if (!always && mCurState == newState) { 1161 return; 1162 } 1163 1164 mCurState = newState; 1165 if (mActive != null) { 1166 boolean loadersRunning = false; 1167 for (int i=0; i<mActive.size(); i++) { 1168 Fragment f = mActive.get(i); 1169 if (f != null) { 1170 moveToState(f, newState, transit, transitStyle, false); 1171 if (f.mLoaderManager != null) { 1172 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1173 } 1174 } 1175 } 1176 1177 if (!loadersRunning) { 1178 startPendingDeferredFragments(); 1179 } 1180 1181 if (mNeedMenuInvalidate && mActivity != null && mCurState == Fragment.RESUMED) { 1182 mActivity.supportInvalidateOptionsMenu(); 1183 mNeedMenuInvalidate = false; 1184 } 1185 } 1186 } 1187 1188 void startPendingDeferredFragments() { 1189 if (mActive == null) return; 1190 1191 for (int i=0; i<mActive.size(); i++) { 1192 Fragment f = mActive.get(i); 1193 if (f != null) { 1194 performPendingDeferredStart(f); 1195 } 1196 } 1197 } 1198 1199 void makeActive(Fragment f) { 1200 if (f.mIndex >= 0) { 1201 return; 1202 } 1203 1204 if (mAvailIndices == null || mAvailIndices.size() <= 0) { 1205 if (mActive == null) { 1206 mActive = new ArrayList<Fragment>(); 1207 } 1208 f.setIndex(mActive.size()); 1209 mActive.add(f); 1210 1211 } else { 1212 f.setIndex(mAvailIndices.remove(mAvailIndices.size()-1)); 1213 mActive.set(f.mIndex, f); 1214 } 1215 if (DEBUG) Log.v(TAG, "Allocated fragment index " + f); 1216 } 1217 1218 void makeInactive(Fragment f) { 1219 if (f.mIndex < 0) { 1220 return; 1221 } 1222 1223 if (DEBUG) Log.v(TAG, "Freeing fragment index " + f); 1224 mActive.set(f.mIndex, null); 1225 if (mAvailIndices == null) { 1226 mAvailIndices = new ArrayList<Integer>(); 1227 } 1228 mAvailIndices.add(f.mIndex); 1229 mActivity.invalidateSupportFragmentIndex(f.mIndex); 1230 f.initState(); 1231 } 1232 1233 public void addFragment(Fragment fragment, boolean moveToStateNow) { 1234 if (mAdded == null) { 1235 mAdded = new ArrayList<Fragment>(); 1236 } 1237 if (DEBUG) Log.v(TAG, "add: " + fragment); 1238 makeActive(fragment); 1239 if (!fragment.mDetached) { 1240 mAdded.add(fragment); 1241 fragment.mAdded = true; 1242 fragment.mRemoving = false; 1243 if (fragment.mHasMenu && fragment.mMenuVisible) { 1244 mNeedMenuInvalidate = true; 1245 } 1246 if (moveToStateNow) { 1247 moveToState(fragment); 1248 } 1249 } 1250 } 1251 1252 public void removeFragment(Fragment fragment, int transition, int transitionStyle) { 1253 if (DEBUG) Log.v(TAG, "remove: " + fragment + " nesting=" + fragment.mBackStackNesting); 1254 final boolean inactive = !fragment.isInBackStack(); 1255 if (!fragment.mDetached || inactive) { 1256 if (mAdded != null) { 1257 mAdded.remove(fragment); 1258 } 1259 if (fragment.mHasMenu && fragment.mMenuVisible) { 1260 mNeedMenuInvalidate = true; 1261 } 1262 fragment.mAdded = false; 1263 fragment.mRemoving = true; 1264 moveToState(fragment, inactive ? Fragment.INITIALIZING : Fragment.CREATED, 1265 transition, transitionStyle, false); 1266 } 1267 } 1268 1269 public void hideFragment(Fragment fragment, int transition, int transitionStyle) { 1270 if (DEBUG) Log.v(TAG, "hide: " + fragment); 1271 if (!fragment.mHidden) { 1272 fragment.mHidden = true; 1273 if (fragment.mView != null) { 1274 Animation anim = loadAnimation(fragment, transition, true, 1275 transitionStyle); 1276 if (anim != null) { 1277 fragment.mView.startAnimation(anim); 1278 } 1279 fragment.mView.setVisibility(View.GONE); 1280 } 1281 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1282 mNeedMenuInvalidate = true; 1283 } 1284 fragment.onHiddenChanged(true); 1285 } 1286 } 1287 1288 public void showFragment(Fragment fragment, int transition, int transitionStyle) { 1289 if (DEBUG) Log.v(TAG, "show: " + fragment); 1290 if (fragment.mHidden) { 1291 fragment.mHidden = false; 1292 if (fragment.mView != null) { 1293 Animation anim = loadAnimation(fragment, transition, true, 1294 transitionStyle); 1295 if (anim != null) { 1296 fragment.mView.startAnimation(anim); 1297 } 1298 fragment.mView.setVisibility(View.VISIBLE); 1299 } 1300 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1301 mNeedMenuInvalidate = true; 1302 } 1303 fragment.onHiddenChanged(false); 1304 } 1305 } 1306 1307 public void detachFragment(Fragment fragment, int transition, int transitionStyle) { 1308 if (DEBUG) Log.v(TAG, "detach: " + fragment); 1309 if (!fragment.mDetached) { 1310 fragment.mDetached = true; 1311 if (fragment.mAdded) { 1312 // We are not already in back stack, so need to remove the fragment. 1313 if (mAdded != null) { 1314 mAdded.remove(fragment); 1315 } 1316 if (fragment.mHasMenu && fragment.mMenuVisible) { 1317 mNeedMenuInvalidate = true; 1318 } 1319 fragment.mAdded = false; 1320 moveToState(fragment, Fragment.CREATED, transition, transitionStyle, false); 1321 } 1322 } 1323 } 1324 1325 public void attachFragment(Fragment fragment, int transition, int transitionStyle) { 1326 if (DEBUG) Log.v(TAG, "attach: " + fragment); 1327 if (fragment.mDetached) { 1328 fragment.mDetached = false; 1329 if (!fragment.mAdded) { 1330 if (mAdded == null) { 1331 mAdded = new ArrayList<Fragment>(); 1332 } 1333 mAdded.add(fragment); 1334 fragment.mAdded = true; 1335 if (fragment.mHasMenu && fragment.mMenuVisible) { 1336 mNeedMenuInvalidate = true; 1337 } 1338 moveToState(fragment, mCurState, transition, transitionStyle, false); 1339 } 1340 } 1341 } 1342 1343 public Fragment findFragmentById(int id) { 1344 if (mAdded != null) { 1345 // First look through added fragments. 1346 for (int i=mAdded.size()-1; i>=0; i--) { 1347 Fragment f = mAdded.get(i); 1348 if (f != null && f.mFragmentId == id) { 1349 return f; 1350 } 1351 } 1352 } 1353 if (mActive != null) { 1354 // Now for any known fragment. 1355 for (int i=mActive.size()-1; i>=0; i--) { 1356 Fragment f = mActive.get(i); 1357 if (f != null && f.mFragmentId == id) { 1358 return f; 1359 } 1360 } 1361 } 1362 return null; 1363 } 1364 1365 public Fragment findFragmentByTag(String tag) { 1366 if (mAdded != null && tag != null) { 1367 // First look through added fragments. 1368 for (int i=mAdded.size()-1; i>=0; i--) { 1369 Fragment f = mAdded.get(i); 1370 if (f != null && tag.equals(f.mTag)) { 1371 return f; 1372 } 1373 } 1374 } 1375 if (mActive != null && tag != null) { 1376 // Now for any known fragment. 1377 for (int i=mActive.size()-1; i>=0; i--) { 1378 Fragment f = mActive.get(i); 1379 if (f != null && tag.equals(f.mTag)) { 1380 return f; 1381 } 1382 } 1383 } 1384 return null; 1385 } 1386 1387 public Fragment findFragmentByWho(String who) { 1388 if (mActive != null && who != null) { 1389 for (int i=mActive.size()-1; i>=0; i--) { 1390 Fragment f = mActive.get(i); 1391 if (f != null && who.equals(f.mWho)) { 1392 return f; 1393 } 1394 } 1395 } 1396 return null; 1397 } 1398 1399 private void checkStateLoss() { 1400 if (mStateSaved) { 1401 throw new IllegalStateException( 1402 "Can not perform this action after onSaveInstanceState"); 1403 } 1404 if (mNoTransactionsBecause != null) { 1405 throw new IllegalStateException( 1406 "Can not perform this action inside of " + mNoTransactionsBecause); 1407 } 1408 } 1409 1410 public void enqueueAction(Runnable action, boolean allowStateLoss) { 1411 if (!allowStateLoss) { 1412 checkStateLoss(); 1413 } 1414 synchronized (this) { 1415 if (mActivity == null) { 1416 throw new IllegalStateException("Activity has been destroyed"); 1417 } 1418 if (mPendingActions == null) { 1419 mPendingActions = new ArrayList<Runnable>(); 1420 } 1421 mPendingActions.add(action); 1422 if (mPendingActions.size() == 1) { 1423 mActivity.mHandler.removeCallbacks(mExecCommit); 1424 mActivity.mHandler.post(mExecCommit); 1425 } 1426 } 1427 } 1428 1429 public int allocBackStackIndex(BackStackRecord bse) { 1430 synchronized (this) { 1431 if (mAvailBackStackIndices == null || mAvailBackStackIndices.size() <= 0) { 1432 if (mBackStackIndices == null) { 1433 mBackStackIndices = new ArrayList<BackStackRecord>(); 1434 } 1435 int index = mBackStackIndices.size(); 1436 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1437 mBackStackIndices.add(bse); 1438 return index; 1439 1440 } else { 1441 int index = mAvailBackStackIndices.remove(mAvailBackStackIndices.size()-1); 1442 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1443 mBackStackIndices.set(index, bse); 1444 return index; 1445 } 1446 } 1447 } 1448 1449 public void setBackStackIndex(int index, BackStackRecord bse) { 1450 synchronized (this) { 1451 if (mBackStackIndices == null) { 1452 mBackStackIndices = new ArrayList<BackStackRecord>(); 1453 } 1454 int N = mBackStackIndices.size(); 1455 if (index < N) { 1456 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1457 mBackStackIndices.set(index, bse); 1458 } else { 1459 while (N < index) { 1460 mBackStackIndices.add(null); 1461 if (mAvailBackStackIndices == null) { 1462 mAvailBackStackIndices = new ArrayList<Integer>(); 1463 } 1464 if (DEBUG) Log.v(TAG, "Adding available back stack index " + N); 1465 mAvailBackStackIndices.add(N); 1466 N++; 1467 } 1468 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1469 mBackStackIndices.add(bse); 1470 } 1471 } 1472 } 1473 1474 public void freeBackStackIndex(int index) { 1475 synchronized (this) { 1476 mBackStackIndices.set(index, null); 1477 if (mAvailBackStackIndices == null) { 1478 mAvailBackStackIndices = new ArrayList<Integer>(); 1479 } 1480 if (DEBUG) Log.v(TAG, "Freeing back stack index " + index); 1481 mAvailBackStackIndices.add(index); 1482 } 1483 } 1484 1485 /** 1486 * Only call from main thread! 1487 */ 1488 public boolean execPendingActions() { 1489 if (mExecutingActions) { 1490 throw new IllegalStateException("Recursive entry to executePendingTransactions"); 1491 } 1492 1493 if (Looper.myLooper() != mActivity.mHandler.getLooper()) { 1494 throw new IllegalStateException("Must be called from main thread of process"); 1495 } 1496 1497 boolean didSomething = false; 1498 1499 while (true) { 1500 int numActions; 1501 1502 synchronized (this) { 1503 if (mPendingActions == null || mPendingActions.size() == 0) { 1504 break; 1505 } 1506 1507 numActions = mPendingActions.size(); 1508 if (mTmpActions == null || mTmpActions.length < numActions) { 1509 mTmpActions = new Runnable[numActions]; 1510 } 1511 mPendingActions.toArray(mTmpActions); 1512 mPendingActions.clear(); 1513 mActivity.mHandler.removeCallbacks(mExecCommit); 1514 } 1515 1516 mExecutingActions = true; 1517 for (int i=0; i<numActions; i++) { 1518 mTmpActions[i].run(); 1519 mTmpActions[i] = null; 1520 } 1521 mExecutingActions = false; 1522 didSomething = true; 1523 } 1524 1525 if (mHavePendingDeferredStart) { 1526 boolean loadersRunning = false; 1527 for (int i=0; i<mActive.size(); i++) { 1528 Fragment f = mActive.get(i); 1529 if (f != null && f.mLoaderManager != null) { 1530 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1531 } 1532 } 1533 if (!loadersRunning) { 1534 mHavePendingDeferredStart = false; 1535 startPendingDeferredFragments(); 1536 } 1537 } 1538 return didSomething; 1539 } 1540 1541 void reportBackStackChanged() { 1542 if (mBackStackChangeListeners != null) { 1543 for (int i=0; i<mBackStackChangeListeners.size(); i++) { 1544 mBackStackChangeListeners.get(i).onBackStackChanged(); 1545 } 1546 } 1547 } 1548 1549 void addBackStackState(BackStackRecord state) { 1550 if (mBackStack == null) { 1551 mBackStack = new ArrayList<BackStackRecord>(); 1552 } 1553 mBackStack.add(state); 1554 reportBackStackChanged(); 1555 } 1556 1557 boolean popBackStackState(Handler handler, String name, int id, int flags) { 1558 if (mBackStack == null) { 1559 return false; 1560 } 1561 if (name == null && id < 0 && (flags&POP_BACK_STACK_INCLUSIVE) == 0) { 1562 int last = mBackStack.size()-1; 1563 if (last < 0) { 1564 return false; 1565 } 1566 final BackStackRecord bss = mBackStack.remove(last); 1567 bss.popFromBackStack(true); 1568 reportBackStackChanged(); 1569 } else { 1570 int index = -1; 1571 if (name != null || id >= 0) { 1572 // If a name or ID is specified, look for that place in 1573 // the stack. 1574 index = mBackStack.size()-1; 1575 while (index >= 0) { 1576 BackStackRecord bss = mBackStack.get(index); 1577 if (name != null && name.equals(bss.getName())) { 1578 break; 1579 } 1580 if (id >= 0 && id == bss.mIndex) { 1581 break; 1582 } 1583 index--; 1584 } 1585 if (index < 0) { 1586 return false; 1587 } 1588 if ((flags&POP_BACK_STACK_INCLUSIVE) != 0) { 1589 index--; 1590 // Consume all following entries that match. 1591 while (index >= 0) { 1592 BackStackRecord bss = mBackStack.get(index); 1593 if ((name != null && name.equals(bss.getName())) 1594 || (id >= 0 && id == bss.mIndex)) { 1595 index--; 1596 continue; 1597 } 1598 break; 1599 } 1600 } 1601 } 1602 if (index == mBackStack.size()-1) { 1603 return false; 1604 } 1605 final ArrayList<BackStackRecord> states 1606 = new ArrayList<BackStackRecord>(); 1607 for (int i=mBackStack.size()-1; i>index; i--) { 1608 states.add(mBackStack.remove(i)); 1609 } 1610 final int LAST = states.size()-1; 1611 for (int i=0; i<=LAST; i++) { 1612 if (DEBUG) Log.v(TAG, "Popping back stack state: " + states.get(i)); 1613 states.get(i).popFromBackStack(i == LAST); 1614 } 1615 reportBackStackChanged(); 1616 } 1617 return true; 1618 } 1619 1620 ArrayList<Fragment> retainNonConfig() { 1621 ArrayList<Fragment> fragments = null; 1622 if (mActive != null) { 1623 for (int i=0; i<mActive.size(); i++) { 1624 Fragment f = mActive.get(i); 1625 if (f != null && f.mRetainInstance) { 1626 if (fragments == null) { 1627 fragments = new ArrayList<Fragment>(); 1628 } 1629 fragments.add(f); 1630 f.mRetaining = true; 1631 f.mTargetIndex = f.mTarget != null ? f.mTarget.mIndex : -1; 1632 if (DEBUG) Log.v(TAG, "retainNonConfig: keeping retained " + f); 1633 } 1634 } 1635 } 1636 return fragments; 1637 } 1638 1639 void saveFragmentViewState(Fragment f) { 1640 if (f.mInnerView == null) { 1641 return; 1642 } 1643 if (mStateArray == null) { 1644 mStateArray = new SparseArray<Parcelable>(); 1645 } else { 1646 mStateArray.clear(); 1647 } 1648 f.mInnerView.saveHierarchyState(mStateArray); 1649 if (mStateArray.size() > 0) { 1650 f.mSavedViewState = mStateArray; 1651 mStateArray = null; 1652 } 1653 } 1654 1655 Bundle saveFragmentBasicState(Fragment f) { 1656 Bundle result = null; 1657 1658 if (mStateBundle == null) { 1659 mStateBundle = new Bundle(); 1660 } 1661 f.onSaveInstanceState(mStateBundle); 1662 if (!mStateBundle.isEmpty()) { 1663 result = mStateBundle; 1664 mStateBundle = null; 1665 } 1666 1667 if (f.mView != null) { 1668 saveFragmentViewState(f); 1669 } 1670 if (f.mSavedViewState != null) { 1671 if (result == null) { 1672 result = new Bundle(); 1673 } 1674 result.putSparseParcelableArray( 1675 FragmentManagerImpl.VIEW_STATE_TAG, f.mSavedViewState); 1676 } 1677 if (!f.mUserVisibleHint) { 1678 if (result == null) { 1679 result = new Bundle(); 1680 } 1681 // Only add this if it's not the default value 1682 result.putBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG, f.mUserVisibleHint); 1683 } 1684 1685 return result; 1686 } 1687 1688 Parcelable saveAllState() { 1689 // Make sure all pending operations have now been executed to get 1690 // our state update-to-date. 1691 execPendingActions(); 1692 1693 if (HONEYCOMB) { 1694 // As of Honeycomb, we save state after pausing. Prior to that 1695 // it is before pausing. With fragments this is an issue, since 1696 // there are many things you may do after pausing but before 1697 // stopping that change the fragment state. For those older 1698 // devices, we will not at this point say that we have saved 1699 // the state, so we will allow them to continue doing fragment 1700 // transactions. This retains the same semantics as Honeycomb, 1701 // though you do have the risk of losing the very most recent state 1702 // if the process is killed... we'll live with that. 1703 mStateSaved = true; 1704 } 1705 1706 if (mActive == null || mActive.size() <= 0) { 1707 return null; 1708 } 1709 1710 // First collect all active fragments. 1711 int N = mActive.size(); 1712 FragmentState[] active = new FragmentState[N]; 1713 boolean haveFragments = false; 1714 for (int i=0; i<N; i++) { 1715 Fragment f = mActive.get(i); 1716 if (f != null) { 1717 if (f.mIndex < 0) { 1718 String msg = "Failure saving state: active " + f 1719 + " has cleared index: " + f.mIndex; 1720 Log.e(TAG, msg); 1721 dump(" ", null, new PrintWriter(new LogWriter(TAG)), new String[] { }); 1722 throw new IllegalStateException(msg); 1723 } 1724 1725 haveFragments = true; 1726 1727 FragmentState fs = new FragmentState(f); 1728 active[i] = fs; 1729 1730 if (f.mState > Fragment.INITIALIZING && fs.mSavedFragmentState == null) { 1731 fs.mSavedFragmentState = saveFragmentBasicState(f); 1732 1733 if (f.mTarget != null) { 1734 if (f.mTarget.mIndex < 0) { 1735 String msg = "Failure saving state: " + f 1736 + " has target not in fragment manager: " + f.mTarget; 1737 Log.e(TAG, msg); 1738 dump(" ", null, new PrintWriter(new LogWriter(TAG)), new String[] { }); 1739 throw new IllegalStateException(msg); 1740 } 1741 if (fs.mSavedFragmentState == null) { 1742 fs.mSavedFragmentState = new Bundle(); 1743 } 1744 putFragment(fs.mSavedFragmentState, 1745 FragmentManagerImpl.TARGET_STATE_TAG, f.mTarget); 1746 if (f.mTargetRequestCode != 0) { 1747 fs.mSavedFragmentState.putInt( 1748 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 1749 f.mTargetRequestCode); 1750 } 1751 } 1752 1753 } else { 1754 fs.mSavedFragmentState = f.mSavedFragmentState; 1755 } 1756 1757 if (DEBUG) Log.v(TAG, "Saved state of " + f + ": " 1758 + fs.mSavedFragmentState); 1759 } 1760 } 1761 1762 if (!haveFragments) { 1763 if (DEBUG) Log.v(TAG, "saveAllState: no fragments!"); 1764 return null; 1765 } 1766 1767 int[] added = null; 1768 BackStackState[] backStack = null; 1769 1770 // Build list of currently added fragments. 1771 if (mAdded != null) { 1772 N = mAdded.size(); 1773 if (N > 0) { 1774 added = new int[N]; 1775 for (int i=0; i<N; i++) { 1776 added[i] = mAdded.get(i).mIndex; 1777 if (added[i] < 0) { 1778 String msg = "Failure saving state: active " + mAdded.get(i) 1779 + " has cleared index: " + added[i]; 1780 Log.e(TAG, msg); 1781 dump(" ", null, new PrintWriter(new LogWriter(TAG)), new String[] { }); 1782 throw new IllegalStateException(msg); 1783 } 1784 if (DEBUG) Log.v(TAG, "saveAllState: adding fragment #" + i 1785 + ": " + mAdded.get(i)); 1786 } 1787 } 1788 } 1789 1790 // Now save back stack. 1791 if (mBackStack != null) { 1792 N = mBackStack.size(); 1793 if (N > 0) { 1794 backStack = new BackStackState[N]; 1795 for (int i=0; i<N; i++) { 1796 backStack[i] = new BackStackState(this, mBackStack.get(i)); 1797 if (DEBUG) Log.v(TAG, "saveAllState: adding back stack #" + i 1798 + ": " + mBackStack.get(i)); 1799 } 1800 } 1801 } 1802 1803 FragmentManagerState fms = new FragmentManagerState(); 1804 fms.mActive = active; 1805 fms.mAdded = added; 1806 fms.mBackStack = backStack; 1807 return fms; 1808 } 1809 1810 void restoreAllState(Parcelable state, ArrayList<Fragment> nonConfig) { 1811 // If there is no saved state at all, then there can not be 1812 // any nonConfig fragments either, so that is that. 1813 if (state == null) return; 1814 FragmentManagerState fms = (FragmentManagerState)state; 1815 if (fms.mActive == null) return; 1816 1817 // First re-attach any non-config instances we are retaining back 1818 // to their saved state, so we don't try to instantiate them again. 1819 if (nonConfig != null) { 1820 for (int i=0; i<nonConfig.size(); i++) { 1821 Fragment f = nonConfig.get(i); 1822 if (DEBUG) Log.v(TAG, "restoreAllState: re-attaching retained " + f); 1823 FragmentState fs = fms.mActive[f.mIndex]; 1824 fs.mInstance = f; 1825 f.mSavedViewState = null; 1826 f.mBackStackNesting = 0; 1827 f.mInLayout = false; 1828 f.mAdded = false; 1829 f.mTarget = null; 1830 if (fs.mSavedFragmentState != null) { 1831 fs.mSavedFragmentState.setClassLoader(mActivity.getClassLoader()); 1832 f.mSavedViewState = fs.mSavedFragmentState.getSparseParcelableArray( 1833 FragmentManagerImpl.VIEW_STATE_TAG); 1834 } 1835 } 1836 } 1837 1838 // Build the full list of active fragments, instantiating them from 1839 // their saved state. 1840 mActive = new ArrayList<Fragment>(fms.mActive.length); 1841 if (mAvailIndices != null) { 1842 mAvailIndices.clear(); 1843 } 1844 for (int i=0; i<fms.mActive.length; i++) { 1845 FragmentState fs = fms.mActive[i]; 1846 if (fs != null) { 1847 Fragment f = fs.instantiate(mActivity); 1848 if (DEBUG) Log.v(TAG, "restoreAllState: adding #" + i + ": " + f); 1849 mActive.add(f); 1850 // Now that the fragment is instantiated (or came from being 1851 // retained above), clear mInstance in case we end up re-restoring 1852 // from this FragmentState again. 1853 fs.mInstance = null; 1854 } else { 1855 if (DEBUG) Log.v(TAG, "restoreAllState: adding #" + i + ": (null)"); 1856 mActive.add(null); 1857 if (mAvailIndices == null) { 1858 mAvailIndices = new ArrayList<Integer>(); 1859 } 1860 if (DEBUG) Log.v(TAG, "restoreAllState: adding avail #" + i); 1861 mAvailIndices.add(i); 1862 } 1863 } 1864 1865 // Update the target of all retained fragments. 1866 if (nonConfig != null) { 1867 for (int i=0; i<nonConfig.size(); i++) { 1868 Fragment f = nonConfig.get(i); 1869 if (f.mTargetIndex >= 0) { 1870 if (f.mTargetIndex < mActive.size()) { 1871 f.mTarget = mActive.get(f.mTargetIndex); 1872 } else { 1873 Log.w(TAG, "Re-attaching retained fragment " + f 1874 + " target no longer exists: " + f.mTargetIndex); 1875 f.mTarget = null; 1876 } 1877 } 1878 } 1879 } 1880 1881 // Build the list of currently added fragments. 1882 if (fms.mAdded != null) { 1883 mAdded = new ArrayList<Fragment>(fms.mAdded.length); 1884 for (int i=0; i<fms.mAdded.length; i++) { 1885 Fragment f = mActive.get(fms.mAdded[i]); 1886 if (f == null) { 1887 throw new IllegalStateException( 1888 "No instantiated fragment for index #" + fms.mAdded[i]); 1889 } 1890 f.mAdded = true; 1891 if (DEBUG) Log.v(TAG, "restoreAllState: making added #" + i + ": " + f); 1892 mAdded.add(f); 1893 } 1894 } else { 1895 mAdded = null; 1896 } 1897 1898 // Build the back stack. 1899 if (fms.mBackStack != null) { 1900 mBackStack = new ArrayList<BackStackRecord>(fms.mBackStack.length); 1901 for (int i=0; i<fms.mBackStack.length; i++) { 1902 BackStackRecord bse = fms.mBackStack[i].instantiate(this); 1903 if (DEBUG) Log.v(TAG, "restoreAllState: adding bse #" + i 1904 + " (index " + bse.mIndex + "): " + bse); 1905 mBackStack.add(bse); 1906 if (bse.mIndex >= 0) { 1907 setBackStackIndex(bse.mIndex, bse); 1908 } 1909 } 1910 } else { 1911 mBackStack = null; 1912 } 1913 } 1914 1915 public void attachActivity(FragmentActivity activity) { 1916 if (mActivity != null) throw new IllegalStateException(); 1917 mActivity = activity; 1918 } 1919 1920 public void noteStateNotSaved() { 1921 mStateSaved = false; 1922 } 1923 1924 public void dispatchCreate() { 1925 mStateSaved = false; 1926 moveToState(Fragment.CREATED, false); 1927 } 1928 1929 public void dispatchActivityCreated() { 1930 mStateSaved = false; 1931 moveToState(Fragment.ACTIVITY_CREATED, false); 1932 } 1933 1934 public void dispatchStart() { 1935 mStateSaved = false; 1936 moveToState(Fragment.STARTED, false); 1937 } 1938 1939 public void dispatchResume() { 1940 mStateSaved = false; 1941 moveToState(Fragment.RESUMED, false); 1942 } 1943 1944 public void dispatchPause() { 1945 moveToState(Fragment.STARTED, false); 1946 } 1947 1948 public void dispatchStop() { 1949 // See saveAllState() for the explanation of this. We do this for 1950 // all platform versions, to keep our behavior more consistent between 1951 // them. 1952 mStateSaved = true; 1953 1954 moveToState(Fragment.STOPPED, false); 1955 } 1956 1957 public void dispatchReallyStop() { 1958 moveToState(Fragment.ACTIVITY_CREATED, false); 1959 } 1960 1961 public void dispatchDestroy() { 1962 mDestroyed = true; 1963 execPendingActions(); 1964 moveToState(Fragment.INITIALIZING, false); 1965 mActivity = null; 1966 } 1967 1968 public void dispatchConfigurationChanged(Configuration newConfig) { 1969 if (mAdded != null) { 1970 for (int i=0; i<mAdded.size(); i++) { 1971 Fragment f = mAdded.get(i); 1972 if (f != null) { 1973 f.onConfigurationChanged(newConfig); 1974 } 1975 } 1976 } 1977 } 1978 1979 public void dispatchLowMemory() { 1980 if (mAdded != null) { 1981 for (int i=0; i<mAdded.size(); i++) { 1982 Fragment f = mAdded.get(i); 1983 if (f != null) { 1984 f.onLowMemory(); 1985 } 1986 } 1987 } 1988 } 1989 1990 public boolean dispatchCreateOptionsMenu(Menu menu, MenuInflater inflater) { 1991 boolean show = false; 1992 ArrayList<Fragment> newMenus = null; 1993 if (mAdded != null) { 1994 for (int i=0; i<mAdded.size(); i++) { 1995 Fragment f = mAdded.get(i); 1996 if (f != null && !f.mHidden && f.mHasMenu && f.mMenuVisible) { 1997 show = true; 1998 f.onCreateOptionsMenu(menu, inflater); 1999 if (newMenus == null) { 2000 newMenus = new ArrayList<Fragment>(); 2001 } 2002 newMenus.add(f); 2003 } 2004 } 2005 } 2006 2007 if (mCreatedMenus != null) { 2008 for (int i=0; i<mCreatedMenus.size(); i++) { 2009 Fragment f = mCreatedMenus.get(i); 2010 if (newMenus == null || !newMenus.contains(f)) { 2011 f.onDestroyOptionsMenu(); 2012 } 2013 } 2014 } 2015 2016 mCreatedMenus = newMenus; 2017 2018 return show; 2019 } 2020 2021 public boolean dispatchPrepareOptionsMenu(Menu menu) { 2022 boolean show = false; 2023 if (mAdded != null) { 2024 for (int i=0; i<mAdded.size(); i++) { 2025 Fragment f = mAdded.get(i); 2026 if (f != null && !f.mHidden && f.mHasMenu && f.mMenuVisible) { 2027 show = true; 2028 f.onPrepareOptionsMenu(menu); 2029 } 2030 } 2031 } 2032 return show; 2033 } 2034 2035 public boolean dispatchOptionsItemSelected(MenuItem item) { 2036 if (mAdded != null) { 2037 for (int i=0; i<mAdded.size(); i++) { 2038 Fragment f = mAdded.get(i); 2039 if (f != null && !f.mHidden && f.mHasMenu && f.mMenuVisible) { 2040 if (f.onOptionsItemSelected(item)) { 2041 return true; 2042 } 2043 } 2044 } 2045 } 2046 return false; 2047 } 2048 2049 public boolean dispatchContextItemSelected(MenuItem item) { 2050 if (mAdded != null) { 2051 for (int i=0; i<mAdded.size(); i++) { 2052 Fragment f = mAdded.get(i); 2053 if (f != null && !f.mHidden && f.mUserVisibleHint) { 2054 if (f.onContextItemSelected(item)) { 2055 return true; 2056 } 2057 } 2058 } 2059 } 2060 return false; 2061 } 2062 2063 public void dispatchOptionsMenuClosed(Menu menu) { 2064 if (mAdded != null) { 2065 for (int i=0; i<mAdded.size(); i++) { 2066 Fragment f = mAdded.get(i); 2067 if (f != null && !f.mHidden && f.mHasMenu && f.mMenuVisible) { 2068 f.onOptionsMenuClosed(menu); 2069 } 2070 } 2071 } 2072 } 2073 2074 public static int reverseTransit(int transit) { 2075 int rev = 0; 2076 switch (transit) { 2077 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2078 rev = FragmentTransaction.TRANSIT_FRAGMENT_CLOSE; 2079 break; 2080 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2081 rev = FragmentTransaction.TRANSIT_FRAGMENT_OPEN; 2082 break; 2083 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2084 rev = FragmentTransaction.TRANSIT_FRAGMENT_FADE; 2085 break; 2086 } 2087 return rev; 2088 2089 } 2090 2091 public static final int ANIM_STYLE_OPEN_ENTER = 1; 2092 public static final int ANIM_STYLE_OPEN_EXIT = 2; 2093 public static final int ANIM_STYLE_CLOSE_ENTER = 3; 2094 public static final int ANIM_STYLE_CLOSE_EXIT = 4; 2095 public static final int ANIM_STYLE_FADE_ENTER = 5; 2096 public static final int ANIM_STYLE_FADE_EXIT = 6; 2097 2098 public static int transitToStyleIndex(int transit, boolean enter) { 2099 int animAttr = -1; 2100 switch (transit) { 2101 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2102 animAttr = enter ? ANIM_STYLE_OPEN_ENTER : ANIM_STYLE_OPEN_EXIT; 2103 break; 2104 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2105 animAttr = enter ? ANIM_STYLE_CLOSE_ENTER : ANIM_STYLE_CLOSE_EXIT; 2106 break; 2107 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2108 animAttr = enter ? ANIM_STYLE_FADE_ENTER : ANIM_STYLE_FADE_EXIT; 2109 break; 2110 } 2111 return animAttr; 2112 } 2113} 2114