FragmentManager.java revision 08ca9e8030eecfc473fa11ae8703d24014602803
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.os.Bundle; 22import android.os.Handler; 23import android.os.Looper; 24import android.os.Parcel; 25import android.os.Parcelable; 26import android.support.v4.util.DebugUtils; 27import android.support.v4.util.LogWriter; 28import android.util.Log; 29import android.util.SparseArray; 30import android.view.animation.AccelerateInterpolator; 31import android.view.animation.AlphaAnimation; 32import android.view.animation.Animation; 33import android.view.animation.AnimationSet; 34import android.view.animation.AnimationUtils; 35import android.view.animation.DecelerateInterpolator; 36import android.view.animation.Interpolator; 37import android.view.animation.ScaleAnimation; 38import android.view.animation.Animation.AnimationListener; 39import android.view.Menu; 40import android.view.MenuInflater; 41import android.view.MenuItem; 42import android.view.View; 43import android.view.ViewGroup; 44 45import java.io.FileDescriptor; 46import java.io.PrintWriter; 47import java.util.ArrayList; 48import java.util.Arrays; 49import java.util.List; 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 {@link FragmentManager} 56 * documentation for a class overview. 57 * 58 * <p>Your activity must derive from {@link FragmentActivity} to use this. From such an activity, 59 * you can acquire the {@link FragmentManager} by calling 60 * {@link FragmentActivity#getSupportFragmentManager}. 61 */ 62public abstract class FragmentManager { 63 /** 64 * Representation of an entry on the fragment back stack, as created 65 * with {@link FragmentTransaction#addToBackStack(String) 66 * FragmentTransaction.addToBackStack()}. Entries can later be 67 * retrieved with {@link FragmentManager#getBackStackEntryAt(int) 68 * FragmentManager.getBackStackEntry()}. 69 * 70 * <p>Note that you should never hold on to a BackStackEntry object; 71 * the identifier as returned by {@link #getId} is the only thing that 72 * will be persisted across activity instances. 73 */ 74 public interface BackStackEntry { 75 /** 76 * Return the unique identifier for the entry. This is the only 77 * representation of the entry that will persist across activity 78 * instances. 79 */ 80 public int getId(); 81 82 /** 83 * Get the name that was supplied to 84 * {@link FragmentTransaction#addToBackStack(String) 85 * FragmentTransaction.addToBackStack(String)} when creating this entry. 86 */ 87 public String getName(); 88 89 /** 90 * Return the full bread crumb title resource identifier for the entry, 91 * or 0 if it does not have one. 92 */ 93 public int getBreadCrumbTitleRes(); 94 95 /** 96 * Return the short bread crumb title resource identifier for the entry, 97 * or 0 if it does not have one. 98 */ 99 public int getBreadCrumbShortTitleRes(); 100 101 /** 102 * Return the full bread crumb title for the entry, or null if it 103 * does not have one. 104 */ 105 public CharSequence getBreadCrumbTitle(); 106 107 /** 108 * Return the short bread crumb title for the entry, or null if it 109 * does not have one. 110 */ 111 public CharSequence getBreadCrumbShortTitle(); 112 } 113 114 /** 115 * Interface to watch for changes to the back stack. 116 */ 117 public interface OnBackStackChangedListener { 118 /** 119 * Called whenever the contents of the back stack change. 120 */ 121 public void onBackStackChanged(); 122 } 123 124 /** 125 * Start a series of edit operations on the Fragments associated with 126 * this FragmentManager. 127 * 128 * <p>Note: A fragment transaction can only be created/committed prior 129 * to an activity saving its state. If you try to commit a transaction 130 * after {@link FragmentActivity#onSaveInstanceState FragmentActivity.onSaveInstanceState()} 131 * (and prior to a following {@link FragmentActivity#onStart FragmentActivity.onStart} 132 * or {@link FragmentActivity#onResume FragmentActivity.onResume()}, you will get an error. 133 * This is because the framework takes care of saving your current fragments 134 * in the state, and if changes are made after the state is saved then they 135 * will be lost.</p> 136 */ 137 public abstract FragmentTransaction beginTransaction(); 138 139 /** @hide -- remove once prebuilts are in. */ 140 @Deprecated 141 public FragmentTransaction openTransaction() { 142 return beginTransaction(); 143 } 144 145 /** 146 * After a {@link FragmentTransaction} is committed with 147 * {@link FragmentTransaction#commit FragmentTransaction.commit()}, it 148 * is scheduled to be executed asynchronously on the process's main thread. 149 * If you want to immediately executing any such pending operations, you 150 * can call this function (only from the main thread) to do so. Note that 151 * all callbacks and other related behavior will be done from within this 152 * call, so be careful about where this is called from. 153 * 154 * @return Returns true if there were any pending transactions to be 155 * executed. 156 */ 157 public abstract boolean executePendingTransactions(); 158 159 /** 160 * Finds a fragment that was identified by the given id either when inflated 161 * from XML or as the container ID when added in a transaction. This first 162 * searches through fragments that are currently added to the manager's 163 * activity; if no such fragment is found, then all fragments currently 164 * on the back stack associated with this ID are searched. 165 * @return The fragment if found or null otherwise. 166 */ 167 public abstract Fragment findFragmentById(int id); 168 169 /** 170 * Finds a fragment that was identified by the given tag either when inflated 171 * from XML or as supplied when added in a transaction. This first 172 * searches through fragments that are currently added to the manager's 173 * activity; if no such fragment is found, then all fragments currently 174 * on the back stack are searched. 175 * @return The fragment if found or null otherwise. 176 */ 177 public abstract Fragment findFragmentByTag(String tag); 178 179 /** 180 * Flag for {@link #popBackStack(String, int)} 181 * and {@link #popBackStack(int, int)}: If set, and the name or ID of 182 * a back stack entry has been supplied, then all matching entries will 183 * be consumed until one that doesn't match is found or the bottom of 184 * the stack is reached. Otherwise, all entries up to but not including that entry 185 * will be removed. 186 */ 187 public static final int POP_BACK_STACK_INCLUSIVE = 1<<0; 188 189 /** 190 * Pop the top state off the back stack. Returns true if there was one 191 * to pop, else false. This function is asynchronous -- it enqueues the 192 * request to pop, but the action will not be performed until the application 193 * returns to its event loop. 194 */ 195 public abstract void popBackStack(); 196 197 /** 198 * Like {@link #popBackStack()}, but performs the operation immediately 199 * inside of the call. This is like calling {@link #executePendingTransactions()} 200 * afterwards. 201 * @return Returns true if there was something popped, else false. 202 */ 203 public abstract boolean popBackStackImmediate(); 204 205 /** 206 * Pop the last fragment transition from the manager's fragment 207 * back stack. If there is nothing to pop, false is returned. 208 * This function is asynchronous -- it enqueues the 209 * request to pop, but the action will not be performed until the application 210 * returns to its event loop. 211 * 212 * @param name If non-null, this is the name of a previous back state 213 * to look for; if found, all states up to that state will be popped. The 214 * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 215 * the named state itself is popped. If null, only the top state is popped. 216 * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 217 */ 218 public abstract void popBackStack(String name, int flags); 219 220 /** 221 * Like {@link #popBackStack(String, int)}, but performs the operation immediately 222 * inside of the call. This is like calling {@link #executePendingTransactions()} 223 * afterwards. 224 * @return Returns true if there was something popped, else false. 225 */ 226 public abstract boolean popBackStackImmediate(String name, int flags); 227 228 /** 229 * Pop all back stack states up to the one with the given identifier. 230 * This function is asynchronous -- it enqueues the 231 * request to pop, but the action will not be performed until the application 232 * returns to its event loop. 233 * 234 * @param id Identifier of the stated to be popped. If no identifier exists, 235 * false is returned. 236 * The identifier is the number returned by 237 * {@link FragmentTransaction#commit() FragmentTransaction.commit()}. The 238 * {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether 239 * the named state itself is popped. 240 * @param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}. 241 */ 242 public abstract void popBackStack(int id, int flags); 243 244 /** 245 * Like {@link #popBackStack(int, int)}, but performs the operation immediately 246 * inside of the call. This is like calling {@link #executePendingTransactions()} 247 * afterwards. 248 * @return Returns true if there was something popped, else false. 249 */ 250 public abstract boolean popBackStackImmediate(int id, int flags); 251 252 /** 253 * Return the number of entries currently in the back stack. 254 */ 255 public abstract int getBackStackEntryCount(); 256 257 /** 258 * Return the BackStackEntry at index <var>index</var> in the back stack; 259 * entries start index 0 being the bottom of the stack. 260 */ 261 public abstract BackStackEntry getBackStackEntryAt(int index); 262 263 /** 264 * Add a new listener for changes to the fragment back stack. 265 */ 266 public abstract void addOnBackStackChangedListener(OnBackStackChangedListener listener); 267 268 /** 269 * Remove a listener that was previously added with 270 * {@link #addOnBackStackChangedListener(OnBackStackChangedListener)}. 271 */ 272 public abstract void removeOnBackStackChangedListener(OnBackStackChangedListener listener); 273 274 /** 275 * Put a reference to a fragment in a Bundle. This Bundle can be 276 * persisted as saved state, and when later restoring 277 * {@link #getFragment(Bundle, String)} will return the current 278 * instance of the same fragment. 279 * 280 * @param bundle The bundle in which to put the fragment reference. 281 * @param key The name of the entry in the bundle. 282 * @param fragment The Fragment whose reference is to be stored. 283 */ 284 public abstract void putFragment(Bundle bundle, String key, Fragment fragment); 285 286 /** 287 * Retrieve the current Fragment instance for a reference previously 288 * placed with {@link #putFragment(Bundle, String, Fragment)}. 289 * 290 * @param bundle The bundle from which to retrieve the fragment reference. 291 * @param key The name of the entry in the bundle. 292 * @return Returns the current Fragment instance that is associated with 293 * the given reference. 294 */ 295 public abstract Fragment getFragment(Bundle bundle, String key); 296 297 /** 298 * Get a list of all fragments that have been added to the fragment manager. 299 * 300 * @return The list of all fragments or null if none. 301 * @hide 302 */ 303 public abstract List<Fragment> getFragments(); 304 305 /** 306 * Save the current instance state of the given Fragment. This can be 307 * used later when creating a new instance of the Fragment and adding 308 * it to the fragment manager, to have it create itself to match the 309 * current state returned here. Note that there are limits on how 310 * this can be used: 311 * 312 * <ul> 313 * <li>The Fragment must currently be attached to the FragmentManager. 314 * <li>A new Fragment created using this saved state must be the same class 315 * type as the Fragment it was created from. 316 * <li>The saved state can not contain dependencies on other fragments -- 317 * that is it can't use {@link #putFragment(Bundle, String, Fragment)} to 318 * store a fragment reference because that reference may not be valid when 319 * this saved state is later used. Likewise the Fragment's target and 320 * result code are not included in this state. 321 * </ul> 322 * 323 * @param f The Fragment whose state is to be saved. 324 * @return The generated state. This will be null if there was no 325 * interesting state created by the fragment. 326 */ 327 public abstract Fragment.SavedState saveFragmentInstanceState(Fragment f); 328 329 /** 330 * Print the FragmentManager's state into the given stream. 331 * 332 * @param prefix Text to print at the front of each line. 333 * @param fd The raw file descriptor that the dump is being sent to. 334 * @param writer A PrintWriter to which the dump is to be set. 335 * @param args Additional arguments to the dump request. 336 */ 337 public abstract void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args); 338 339 /** 340 * Control whether the framework's internal fragment manager debugging 341 * logs are turned on. If enabled, you will see output in logcat as 342 * the framework performs fragment operations. 343 */ 344 public static void enableDebugLogging(boolean enabled) { 345 FragmentManagerImpl.DEBUG = enabled; 346 } 347} 348 349final class FragmentManagerState implements Parcelable { 350 FragmentState[] mActive; 351 int[] mAdded; 352 BackStackState[] mBackStack; 353 354 public FragmentManagerState() { 355 } 356 357 public FragmentManagerState(Parcel in) { 358 mActive = in.createTypedArray(FragmentState.CREATOR); 359 mAdded = in.createIntArray(); 360 mBackStack = in.createTypedArray(BackStackState.CREATOR); 361 } 362 363 public int describeContents() { 364 return 0; 365 } 366 367 public void writeToParcel(Parcel dest, int flags) { 368 dest.writeTypedArray(mActive, flags); 369 dest.writeIntArray(mAdded); 370 dest.writeTypedArray(mBackStack, flags); 371 } 372 373 public static final Parcelable.Creator<FragmentManagerState> CREATOR 374 = new Parcelable.Creator<FragmentManagerState>() { 375 public FragmentManagerState createFromParcel(Parcel in) { 376 return new FragmentManagerState(in); 377 } 378 379 public FragmentManagerState[] newArray(int size) { 380 return new FragmentManagerState[size]; 381 } 382 }; 383} 384 385/** 386 * Callbacks from FragmentManagerImpl to its container. 387 */ 388interface FragmentContainer { 389 public View findViewById(int id); 390} 391 392/** 393 * Container for fragments associated with an activity. 394 */ 395final class FragmentManagerImpl extends FragmentManager { 396 static boolean DEBUG = false; 397 static final String TAG = "FragmentManager"; 398 399 static final boolean HONEYCOMB = android.os.Build.VERSION.SDK_INT >= 11; 400 401 static final String TARGET_REQUEST_CODE_STATE_TAG = "android:target_req_state"; 402 static final String TARGET_STATE_TAG = "android:target_state"; 403 static final String VIEW_STATE_TAG = "android:view_state"; 404 static final String USER_VISIBLE_HINT_TAG = "android:user_visible_hint"; 405 406 ArrayList<Runnable> mPendingActions; 407 Runnable[] mTmpActions; 408 boolean mExecutingActions; 409 410 ArrayList<Fragment> mActive; 411 ArrayList<Fragment> mAdded; 412 ArrayList<Integer> mAvailIndices; 413 ArrayList<BackStackRecord> mBackStack; 414 ArrayList<Fragment> mCreatedMenus; 415 416 // Must be accessed while locked. 417 ArrayList<BackStackRecord> mBackStackIndices; 418 ArrayList<Integer> mAvailBackStackIndices; 419 420 ArrayList<OnBackStackChangedListener> mBackStackChangeListeners; 421 422 int mCurState = Fragment.INITIALIZING; 423 FragmentActivity mActivity; 424 FragmentContainer mContainer; 425 Fragment mParent; 426 427 boolean mNeedMenuInvalidate; 428 boolean mStateSaved; 429 boolean mDestroyed; 430 String mNoTransactionsBecause; 431 boolean mHavePendingDeferredStart; 432 433 // Temporary vars for state save and restore. 434 Bundle mStateBundle = null; 435 SparseArray<Parcelable> mStateArray = null; 436 437 Runnable mExecCommit = new Runnable() { 438 @Override 439 public void run() { 440 execPendingActions(); 441 } 442 }; 443 444 private void throwException(RuntimeException ex) { 445 Log.e(TAG, ex.getMessage()); 446 Log.e(TAG, "Activity state:"); 447 LogWriter logw = new LogWriter(TAG); 448 PrintWriter pw = new PrintWriter(logw); 449 if (mActivity != null) { 450 try { 451 mActivity.dump(" ", null, pw, new String[] { }); 452 } catch (Exception e) { 453 Log.e(TAG, "Failed dumping state", e); 454 } 455 } else { 456 try { 457 dump(" ", null, pw, new String[] { }); 458 } catch (Exception e) { 459 Log.e(TAG, "Failed dumping state", e); 460 } 461 } 462 throw ex; 463 } 464 465 @Override 466 public FragmentTransaction beginTransaction() { 467 return new BackStackRecord(this); 468 } 469 470 @Override 471 public boolean executePendingTransactions() { 472 return execPendingActions(); 473 } 474 475 @Override 476 public void popBackStack() { 477 enqueueAction(new Runnable() { 478 @Override public void run() { 479 popBackStackState(mActivity.mHandler, null, -1, 0); 480 } 481 }, false); 482 } 483 484 @Override 485 public boolean popBackStackImmediate() { 486 checkStateLoss(); 487 executePendingTransactions(); 488 return popBackStackState(mActivity.mHandler, null, -1, 0); 489 } 490 491 @Override 492 public void popBackStack(final String name, final int flags) { 493 enqueueAction(new Runnable() { 494 @Override public void run() { 495 popBackStackState(mActivity.mHandler, name, -1, flags); 496 } 497 }, false); 498 } 499 500 @Override 501 public boolean popBackStackImmediate(String name, int flags) { 502 checkStateLoss(); 503 executePendingTransactions(); 504 return popBackStackState(mActivity.mHandler, name, -1, flags); 505 } 506 507 @Override 508 public void popBackStack(final int id, final int flags) { 509 if (id < 0) { 510 throw new IllegalArgumentException("Bad id: " + id); 511 } 512 enqueueAction(new Runnable() { 513 @Override public void run() { 514 popBackStackState(mActivity.mHandler, null, id, flags); 515 } 516 }, false); 517 } 518 519 @Override 520 public boolean popBackStackImmediate(int id, int flags) { 521 checkStateLoss(); 522 executePendingTransactions(); 523 if (id < 0) { 524 throw new IllegalArgumentException("Bad id: " + id); 525 } 526 return popBackStackState(mActivity.mHandler, null, id, flags); 527 } 528 529 @Override 530 public int getBackStackEntryCount() { 531 return mBackStack != null ? mBackStack.size() : 0; 532 } 533 534 @Override 535 public BackStackEntry getBackStackEntryAt(int index) { 536 return mBackStack.get(index); 537 } 538 539 @Override 540 public void addOnBackStackChangedListener(OnBackStackChangedListener listener) { 541 if (mBackStackChangeListeners == null) { 542 mBackStackChangeListeners = new ArrayList<OnBackStackChangedListener>(); 543 } 544 mBackStackChangeListeners.add(listener); 545 } 546 547 @Override 548 public void removeOnBackStackChangedListener(OnBackStackChangedListener listener) { 549 if (mBackStackChangeListeners != null) { 550 mBackStackChangeListeners.remove(listener); 551 } 552 } 553 554 @Override 555 public void putFragment(Bundle bundle, String key, Fragment fragment) { 556 if (fragment.mIndex < 0) { 557 throwException(new IllegalStateException("Fragment " + fragment 558 + " is not currently in the FragmentManager")); 559 } 560 bundle.putInt(key, fragment.mIndex); 561 } 562 563 @Override 564 public Fragment getFragment(Bundle bundle, String key) { 565 int index = bundle.getInt(key, -1); 566 if (index == -1) { 567 return null; 568 } 569 if (index >= mActive.size()) { 570 throwException(new IllegalStateException("Fragment no longer exists for key " 571 + key + ": index " + index)); 572 } 573 Fragment f = mActive.get(index); 574 if (f == null) { 575 throwException(new IllegalStateException("Fragment no longer exists for key " 576 + key + ": index " + index)); 577 } 578 return f; 579 } 580 581 @Override 582 public List<Fragment> getFragments() { 583 return mActive; 584 } 585 586 @Override 587 public Fragment.SavedState saveFragmentInstanceState(Fragment fragment) { 588 if (fragment.mIndex < 0) { 589 throwException( new IllegalStateException("Fragment " + fragment 590 + " is not currently in the FragmentManager")); 591 } 592 if (fragment.mState > Fragment.INITIALIZING) { 593 Bundle result = saveFragmentBasicState(fragment); 594 return result != null ? new Fragment.SavedState(result) : null; 595 } 596 return null; 597 } 598 599 @Override 600 public String toString() { 601 StringBuilder sb = new StringBuilder(128); 602 sb.append("FragmentManager{"); 603 sb.append(Integer.toHexString(System.identityHashCode(this))); 604 sb.append(" in "); 605 if (mParent != null) { 606 DebugUtils.buildShortClassTag(mParent, sb); 607 } else { 608 DebugUtils.buildShortClassTag(mActivity, sb); 609 } 610 sb.append("}}"); 611 return sb.toString(); 612 } 613 614 @Override 615 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 616 String innerPrefix = prefix + " "; 617 618 int N; 619 if (mActive != null) { 620 N = mActive.size(); 621 if (N > 0) { 622 writer.print(prefix); writer.print("Active Fragments in "); 623 writer.print(Integer.toHexString(System.identityHashCode(this))); 624 writer.println(":"); 625 for (int i=0; i<N; i++) { 626 Fragment f = mActive.get(i); 627 writer.print(prefix); writer.print(" #"); writer.print(i); 628 writer.print(": "); writer.println(f); 629 if (f != null) { 630 f.dump(innerPrefix, fd, writer, args); 631 } 632 } 633 } 634 } 635 636 if (mAdded != null) { 637 N = mAdded.size(); 638 if (N > 0) { 639 writer.print(prefix); writer.println("Added Fragments:"); 640 for (int i=0; i<N; i++) { 641 Fragment f = mAdded.get(i); 642 writer.print(prefix); writer.print(" #"); writer.print(i); 643 writer.print(": "); writer.println(f.toString()); 644 } 645 } 646 } 647 648 if (mCreatedMenus != null) { 649 N = mCreatedMenus.size(); 650 if (N > 0) { 651 writer.print(prefix); writer.println("Fragments Created Menus:"); 652 for (int i=0; i<N; i++) { 653 Fragment f = mCreatedMenus.get(i); 654 writer.print(prefix); writer.print(" #"); writer.print(i); 655 writer.print(": "); writer.println(f.toString()); 656 } 657 } 658 } 659 660 if (mBackStack != null) { 661 N = mBackStack.size(); 662 if (N > 0) { 663 writer.print(prefix); writer.println("Back Stack:"); 664 for (int i=0; i<N; i++) { 665 BackStackRecord bs = mBackStack.get(i); 666 writer.print(prefix); writer.print(" #"); writer.print(i); 667 writer.print(": "); writer.println(bs.toString()); 668 bs.dump(innerPrefix, fd, writer, args); 669 } 670 } 671 } 672 673 synchronized (this) { 674 if (mBackStackIndices != null) { 675 N = mBackStackIndices.size(); 676 if (N > 0) { 677 writer.print(prefix); writer.println("Back Stack Indices:"); 678 for (int i=0; i<N; i++) { 679 BackStackRecord bs = mBackStackIndices.get(i); 680 writer.print(prefix); writer.print(" #"); writer.print(i); 681 writer.print(": "); writer.println(bs); 682 } 683 } 684 } 685 686 if (mAvailBackStackIndices != null && mAvailBackStackIndices.size() > 0) { 687 writer.print(prefix); writer.print("mAvailBackStackIndices: "); 688 writer.println(Arrays.toString(mAvailBackStackIndices.toArray())); 689 } 690 } 691 692 if (mPendingActions != null) { 693 N = mPendingActions.size(); 694 if (N > 0) { 695 writer.print(prefix); writer.println("Pending Actions:"); 696 for (int i=0; i<N; i++) { 697 Runnable r = mPendingActions.get(i); 698 writer.print(prefix); writer.print(" #"); writer.print(i); 699 writer.print(": "); writer.println(r); 700 } 701 } 702 } 703 704 writer.print(prefix); writer.println("FragmentManager misc state:"); 705 writer.print(prefix); writer.print(" mActivity="); writer.println(mActivity); 706 writer.print(prefix); writer.print(" mContainer="); writer.println(mContainer); 707 if (mParent != null) { 708 writer.print(prefix); writer.print(" mParent="); writer.println(mParent); 709 } 710 writer.print(prefix); writer.print(" mCurState="); writer.print(mCurState); 711 writer.print(" mStateSaved="); writer.print(mStateSaved); 712 writer.print(" mDestroyed="); writer.println(mDestroyed); 713 if (mNeedMenuInvalidate) { 714 writer.print(prefix); writer.print(" mNeedMenuInvalidate="); 715 writer.println(mNeedMenuInvalidate); 716 } 717 if (mNoTransactionsBecause != null) { 718 writer.print(prefix); writer.print(" mNoTransactionsBecause="); 719 writer.println(mNoTransactionsBecause); 720 } 721 if (mAvailIndices != null && mAvailIndices.size() > 0) { 722 writer.print(prefix); writer.print(" mAvailIndices: "); 723 writer.println(Arrays.toString(mAvailIndices.toArray())); 724 } 725 } 726 727 static final Interpolator DECELERATE_QUINT = new DecelerateInterpolator(2.5f); 728 static final Interpolator DECELERATE_CUBIC = new DecelerateInterpolator(1.5f); 729 static final Interpolator ACCELERATE_QUINT = new AccelerateInterpolator(2.5f); 730 static final Interpolator ACCELERATE_CUBIC = new AccelerateInterpolator(1.5f); 731 732 static final int ANIM_DUR = 220; 733 734 static Animation makeOpenCloseAnimation(Context context, float startScale, 735 float endScale, float startAlpha, float endAlpha) { 736 AnimationSet set = new AnimationSet(false); 737 ScaleAnimation scale = new ScaleAnimation(startScale, endScale, startScale, endScale, 738 Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f); 739 scale.setInterpolator(DECELERATE_QUINT); 740 scale.setDuration(ANIM_DUR); 741 set.addAnimation(scale); 742 AlphaAnimation alpha = new AlphaAnimation(startAlpha, endAlpha); 743 alpha.setInterpolator(DECELERATE_CUBIC); 744 alpha.setDuration(ANIM_DUR); 745 set.addAnimation(alpha); 746 return set; 747 } 748 749 static Animation makeFadeAnimation(Context context, float start, float end) { 750 AlphaAnimation anim = new AlphaAnimation(start, end); 751 anim.setInterpolator(DECELERATE_CUBIC); 752 anim.setDuration(ANIM_DUR); 753 return anim; 754 } 755 756 Animation loadAnimation(Fragment fragment, int transit, boolean enter, 757 int transitionStyle) { 758 Animation animObj = fragment.onCreateAnimation(transit, enter, 759 fragment.mNextAnim); 760 if (animObj != null) { 761 return animObj; 762 } 763 764 if (fragment.mNextAnim != 0) { 765 Animation anim = AnimationUtils.loadAnimation(mActivity, fragment.mNextAnim); 766 if (anim != null) { 767 return anim; 768 } 769 } 770 771 if (transit == 0) { 772 return null; 773 } 774 775 int styleIndex = transitToStyleIndex(transit, enter); 776 if (styleIndex < 0) { 777 return null; 778 } 779 780 switch (styleIndex) { 781 case ANIM_STYLE_OPEN_ENTER: 782 return makeOpenCloseAnimation(mActivity, 1.125f, 1.0f, 0, 1); 783 case ANIM_STYLE_OPEN_EXIT: 784 return makeOpenCloseAnimation(mActivity, 1.0f, .975f, 1, 0); 785 case ANIM_STYLE_CLOSE_ENTER: 786 return makeOpenCloseAnimation(mActivity, .975f, 1.0f, 0, 1); 787 case ANIM_STYLE_CLOSE_EXIT: 788 return makeOpenCloseAnimation(mActivity, 1.0f, 1.075f, 1, 0); 789 case ANIM_STYLE_FADE_ENTER: 790 return makeFadeAnimation(mActivity, 0, 1); 791 case ANIM_STYLE_FADE_EXIT: 792 return makeFadeAnimation(mActivity, 1, 0); 793 } 794 795 if (transitionStyle == 0 && mActivity.getWindow() != null) { 796 transitionStyle = mActivity.getWindow().getAttributes().windowAnimations; 797 } 798 if (transitionStyle == 0) { 799 return null; 800 } 801 802 //TypedArray attrs = mActivity.obtainStyledAttributes(transitionStyle, 803 // com.android.internal.R.styleable.FragmentAnimation); 804 //int anim = attrs.getResourceId(styleIndex, 0); 805 //attrs.recycle(); 806 807 //if (anim == 0) { 808 // return null; 809 //} 810 811 //return AnimatorInflater.loadAnimator(mActivity, anim); 812 return null; 813 } 814 815 public void performPendingDeferredStart(Fragment f) { 816 if (f.mDeferStart) { 817 if (mExecutingActions) { 818 // Wait until we're done executing our pending transactions 819 mHavePendingDeferredStart = true; 820 return; 821 } 822 f.mDeferStart = false; 823 moveToState(f, mCurState, 0, 0, false); 824 } 825 } 826 827 void moveToState(Fragment f, int newState, int transit, int transitionStyle, 828 boolean keepActive) { 829 // Fragments that are not currently added will sit in the onCreate() state. 830 if ((!f.mAdded || f.mDetached) && newState > Fragment.CREATED) { 831 newState = Fragment.CREATED; 832 } 833 if (f.mRemoving && newState > f.mState) { 834 // While removing a fragment, we can't change it to a higher state. 835 newState = f.mState; 836 } 837 // Defer start if requested; don't allow it to move to STARTED or higher 838 // if it's not already started. 839 if (f.mDeferStart && f.mState < Fragment.STARTED && newState > Fragment.STOPPED) { 840 newState = Fragment.STOPPED; 841 } 842 if (f.mState < newState) { 843 // For fragments that are created from a layout, when restoring from 844 // state we don't want to allow them to be created until they are 845 // being reloaded from the layout. 846 if (f.mFromLayout && !f.mInLayout) { 847 return; 848 } 849 if (f.mAnimatingAway != null) { 850 // The fragment is currently being animated... but! Now we 851 // want to move our state back up. Give up on waiting for the 852 // animation, move to whatever the final state should be once 853 // the animation is done, and then we can proceed from there. 854 f.mAnimatingAway = null; 855 moveToState(f, f.mStateAfterAnimating, 0, 0, true); 856 } 857 switch (f.mState) { 858 case Fragment.INITIALIZING: 859 if (DEBUG) Log.v(TAG, "moveto CREATED: " + f); 860 if (f.mSavedFragmentState != null) { 861 f.mSavedFragmentState.setClassLoader(mActivity.getClassLoader()); 862 f.mSavedViewState = f.mSavedFragmentState.getSparseParcelableArray( 863 FragmentManagerImpl.VIEW_STATE_TAG); 864 f.mTarget = getFragment(f.mSavedFragmentState, 865 FragmentManagerImpl.TARGET_STATE_TAG); 866 if (f.mTarget != null) { 867 f.mTargetRequestCode = f.mSavedFragmentState.getInt( 868 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0); 869 } 870 f.mUserVisibleHint = f.mSavedFragmentState.getBoolean( 871 FragmentManagerImpl.USER_VISIBLE_HINT_TAG, true); 872 if (!f.mUserVisibleHint) { 873 f.mDeferStart = true; 874 if (newState > Fragment.STOPPED) { 875 newState = Fragment.STOPPED; 876 } 877 } 878 } 879 f.mActivity = mActivity; 880 f.mParentFragment = mParent; 881 f.mFragmentManager = mParent != null 882 ? mParent.mChildFragmentManager : mActivity.mFragments; 883 f.mCalled = false; 884 f.onAttach(mActivity); 885 if (!f.mCalled) { 886 throw new SuperNotCalledException("Fragment " + f 887 + " did not call through to super.onAttach()"); 888 } 889 if (f.mParentFragment == null) { 890 mActivity.onAttachFragment(f); 891 } 892 893 if (!f.mRetaining) { 894 f.performCreate(f.mSavedFragmentState); 895 } 896 f.mRetaining = false; 897 if (f.mFromLayout) { 898 // For fragments that are part of the content view 899 // layout, we need to instantiate the view immediately 900 // and the inflater will take care of adding it. 901 f.mView = f.performCreateView(f.getLayoutInflater( 902 f.mSavedFragmentState), null, f.mSavedFragmentState); 903 if (f.mView != null) { 904 f.mInnerView = f.mView; 905 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 906 if (f.mHidden) f.mView.setVisibility(View.GONE); 907 f.onViewCreated(f.mView, f.mSavedFragmentState); 908 } else { 909 f.mInnerView = null; 910 } 911 } 912 case Fragment.CREATED: 913 if (newState > Fragment.CREATED) { 914 if (DEBUG) Log.v(TAG, "moveto ACTIVITY_CREATED: " + f); 915 if (!f.mFromLayout) { 916 ViewGroup container = null; 917 if (f.mContainerId != 0) { 918 container = (ViewGroup)mContainer.findViewById(f.mContainerId); 919 if (container == null && !f.mRestored) { 920 throwException(new IllegalArgumentException( 921 "No view found for id 0x" 922 + Integer.toHexString(f.mContainerId) + " (" 923 + f.getResources().getResourceName(f.mContainerId) 924 + ") for fragment " + f)); 925 } 926 } 927 f.mContainer = container; 928 f.mView = f.performCreateView(f.getLayoutInflater( 929 f.mSavedFragmentState), container, f.mSavedFragmentState); 930 if (f.mView != null) { 931 f.mInnerView = f.mView; 932 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 933 if (container != null) { 934 Animation anim = loadAnimation(f, transit, true, 935 transitionStyle); 936 if (anim != null) { 937 f.mView.startAnimation(anim); 938 } 939 container.addView(f.mView); 940 } 941 if (f.mHidden) f.mView.setVisibility(View.GONE); 942 f.onViewCreated(f.mView, f.mSavedFragmentState); 943 } else { 944 f.mInnerView = null; 945 } 946 } 947 948 f.performActivityCreated(f.mSavedFragmentState); 949 if (f.mView != null) { 950 f.restoreViewState(f.mSavedFragmentState); 951 } 952 f.mSavedFragmentState = null; 953 } 954 case Fragment.ACTIVITY_CREATED: 955 case Fragment.STOPPED: 956 if (newState > Fragment.STOPPED) { 957 if (DEBUG) Log.v(TAG, "moveto STARTED: " + f); 958 f.performStart(); 959 } 960 case Fragment.STARTED: 961 if (newState > Fragment.STARTED) { 962 if (DEBUG) Log.v(TAG, "moveto RESUMED: " + f); 963 f.mResumed = true; 964 f.performResume(); 965 f.mSavedFragmentState = null; 966 f.mSavedViewState = null; 967 } 968 } 969 } else if (f.mState > newState) { 970 switch (f.mState) { 971 case Fragment.RESUMED: 972 if (newState < Fragment.RESUMED) { 973 if (DEBUG) Log.v(TAG, "movefrom RESUMED: " + f); 974 f.performPause(); 975 f.mResumed = false; 976 } 977 case Fragment.STARTED: 978 if (newState < Fragment.STARTED) { 979 if (DEBUG) Log.v(TAG, "movefrom STARTED: " + f); 980 f.performStop(); 981 } 982 case Fragment.STOPPED: 983 if (newState < Fragment.STOPPED) { 984 if (DEBUG) Log.v(TAG, "movefrom STOPPED: " + f); 985 f.performReallyStop(); 986 } 987 case Fragment.ACTIVITY_CREATED: 988 if (newState < Fragment.ACTIVITY_CREATED) { 989 if (DEBUG) Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f); 990 if (f.mView != null) { 991 // Need to save the current view state if not 992 // done already. 993 if (!mActivity.isFinishing() && f.mSavedViewState == null) { 994 saveFragmentViewState(f); 995 } 996 } 997 f.performDestroyView(); 998 if (f.mView != null && f.mContainer != null) { 999 Animation anim = null; 1000 if (mCurState > Fragment.INITIALIZING && !mDestroyed) { 1001 anim = loadAnimation(f, transit, false, 1002 transitionStyle); 1003 } 1004 if (anim != null) { 1005 final Fragment fragment = f; 1006 f.mAnimatingAway = f.mView; 1007 f.mStateAfterAnimating = newState; 1008 anim.setAnimationListener(new AnimationListener() { 1009 @Override 1010 public void onAnimationEnd(Animation animation) { 1011 if (fragment.mAnimatingAway != null) { 1012 fragment.mAnimatingAway = null; 1013 moveToState(fragment, fragment.mStateAfterAnimating, 1014 0, 0, false); 1015 } 1016 } 1017 @Override 1018 public void onAnimationRepeat(Animation animation) { 1019 } 1020 @Override 1021 public void onAnimationStart(Animation animation) { 1022 } 1023 }); 1024 f.mView.startAnimation(anim); 1025 } 1026 f.mContainer.removeView(f.mView); 1027 } 1028 f.mContainer = null; 1029 f.mView = null; 1030 f.mInnerView = null; 1031 } 1032 case Fragment.CREATED: 1033 if (newState < Fragment.CREATED) { 1034 if (mDestroyed) { 1035 if (f.mAnimatingAway != null) { 1036 // The fragment's containing activity is 1037 // being destroyed, but this fragment is 1038 // currently animating away. Stop the 1039 // animation right now -- it is not needed, 1040 // and we can't wait any more on destroying 1041 // the fragment. 1042 View v = f.mAnimatingAway; 1043 f.mAnimatingAway = null; 1044 v.clearAnimation(); 1045 } 1046 } 1047 if (f.mAnimatingAway != null) { 1048 // We are waiting for the fragment's view to finish 1049 // animating away. Just make a note of the state 1050 // the fragment now should move to once the animation 1051 // is done. 1052 f.mStateAfterAnimating = newState; 1053 newState = Fragment.CREATED; 1054 } else { 1055 if (DEBUG) Log.v(TAG, "movefrom CREATED: " + f); 1056 if (!f.mRetaining) { 1057 f.performDestroy(); 1058 } 1059 1060 f.mCalled = false; 1061 f.onDetach(); 1062 if (!f.mCalled) { 1063 throw new SuperNotCalledException("Fragment " + f 1064 + " did not call through to super.onDetach()"); 1065 } 1066 if (!keepActive) { 1067 if (!f.mRetaining) { 1068 makeInactive(f); 1069 } else { 1070 f.mActivity = null; 1071 f.mFragmentManager = null; 1072 } 1073 } 1074 } 1075 } 1076 } 1077 } 1078 1079 f.mState = newState; 1080 } 1081 1082 void moveToState(Fragment f) { 1083 moveToState(f, mCurState, 0, 0, false); 1084 } 1085 1086 void moveToState(int newState, boolean always) { 1087 moveToState(newState, 0, 0, always); 1088 } 1089 1090 void moveToState(int newState, int transit, int transitStyle, boolean always) { 1091 if (mActivity == null && newState != Fragment.INITIALIZING) { 1092 throw new IllegalStateException("No activity"); 1093 } 1094 1095 if (!always && mCurState == newState) { 1096 return; 1097 } 1098 1099 mCurState = newState; 1100 if (mActive != null) { 1101 boolean loadersRunning = false; 1102 for (int i=0; i<mActive.size(); i++) { 1103 Fragment f = mActive.get(i); 1104 if (f != null) { 1105 moveToState(f, newState, transit, transitStyle, false); 1106 if (f.mLoaderManager != null) { 1107 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1108 } 1109 } 1110 } 1111 1112 if (!loadersRunning) { 1113 startPendingDeferredFragments(); 1114 } 1115 1116 if (mNeedMenuInvalidate && mActivity != null && mCurState == Fragment.RESUMED) { 1117 mActivity.supportInvalidateOptionsMenu(); 1118 mNeedMenuInvalidate = false; 1119 } 1120 } 1121 } 1122 1123 void startPendingDeferredFragments() { 1124 if (mActive == null) return; 1125 1126 for (int i=0; i<mActive.size(); i++) { 1127 Fragment f = mActive.get(i); 1128 if (f != null) { 1129 performPendingDeferredStart(f); 1130 } 1131 } 1132 } 1133 1134 void makeActive(Fragment f) { 1135 if (f.mIndex >= 0) { 1136 return; 1137 } 1138 1139 if (mAvailIndices == null || mAvailIndices.size() <= 0) { 1140 if (mActive == null) { 1141 mActive = new ArrayList<Fragment>(); 1142 } 1143 f.setIndex(mActive.size(), mParent); 1144 mActive.add(f); 1145 1146 } else { 1147 f.setIndex(mAvailIndices.remove(mAvailIndices.size()-1), mParent); 1148 mActive.set(f.mIndex, f); 1149 } 1150 if (DEBUG) Log.v(TAG, "Allocated fragment index " + f); 1151 } 1152 1153 void makeInactive(Fragment f) { 1154 if (f.mIndex < 0) { 1155 return; 1156 } 1157 1158 if (DEBUG) Log.v(TAG, "Freeing fragment index " + f); 1159 mActive.set(f.mIndex, null); 1160 if (mAvailIndices == null) { 1161 mAvailIndices = new ArrayList<Integer>(); 1162 } 1163 mAvailIndices.add(f.mIndex); 1164 mActivity.invalidateSupportFragment(f.mWho); 1165 f.initState(); 1166 } 1167 1168 public void addFragment(Fragment fragment, boolean moveToStateNow) { 1169 if (mAdded == null) { 1170 mAdded = new ArrayList<Fragment>(); 1171 } 1172 if (DEBUG) Log.v(TAG, "add: " + fragment); 1173 makeActive(fragment); 1174 if (!fragment.mDetached) { 1175 if (mAdded.contains(fragment)) { 1176 throw new IllegalStateException("Fragment already added: " + fragment); 1177 } 1178 mAdded.add(fragment); 1179 fragment.mAdded = true; 1180 fragment.mRemoving = false; 1181 if (fragment.mHasMenu && fragment.mMenuVisible) { 1182 mNeedMenuInvalidate = true; 1183 } 1184 if (moveToStateNow) { 1185 moveToState(fragment); 1186 } 1187 } 1188 } 1189 1190 public void removeFragment(Fragment fragment, int transition, int transitionStyle) { 1191 if (DEBUG) Log.v(TAG, "remove: " + fragment + " nesting=" + fragment.mBackStackNesting); 1192 final boolean inactive = !fragment.isInBackStack(); 1193 if (!fragment.mDetached || inactive) { 1194 if (mAdded != null) { 1195 mAdded.remove(fragment); 1196 } 1197 if (fragment.mHasMenu && fragment.mMenuVisible) { 1198 mNeedMenuInvalidate = true; 1199 } 1200 fragment.mAdded = false; 1201 fragment.mRemoving = true; 1202 moveToState(fragment, inactive ? Fragment.INITIALIZING : Fragment.CREATED, 1203 transition, transitionStyle, false); 1204 } 1205 } 1206 1207 public void hideFragment(Fragment fragment, int transition, int transitionStyle) { 1208 if (DEBUG) Log.v(TAG, "hide: " + fragment); 1209 if (!fragment.mHidden) { 1210 fragment.mHidden = true; 1211 if (fragment.mView != null) { 1212 Animation anim = loadAnimation(fragment, transition, false, 1213 transitionStyle); 1214 if (anim != null) { 1215 fragment.mView.startAnimation(anim); 1216 } 1217 fragment.mView.setVisibility(View.GONE); 1218 } 1219 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1220 mNeedMenuInvalidate = true; 1221 } 1222 fragment.onHiddenChanged(true); 1223 } 1224 } 1225 1226 public void showFragment(Fragment fragment, int transition, int transitionStyle) { 1227 if (DEBUG) Log.v(TAG, "show: " + fragment); 1228 if (fragment.mHidden) { 1229 fragment.mHidden = false; 1230 if (fragment.mView != null) { 1231 Animation anim = loadAnimation(fragment, transition, true, 1232 transitionStyle); 1233 if (anim != null) { 1234 fragment.mView.startAnimation(anim); 1235 } 1236 fragment.mView.setVisibility(View.VISIBLE); 1237 } 1238 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1239 mNeedMenuInvalidate = true; 1240 } 1241 fragment.onHiddenChanged(false); 1242 } 1243 } 1244 1245 public void detachFragment(Fragment fragment, int transition, int transitionStyle) { 1246 if (DEBUG) Log.v(TAG, "detach: " + fragment); 1247 if (!fragment.mDetached) { 1248 fragment.mDetached = true; 1249 if (fragment.mAdded) { 1250 // We are not already in back stack, so need to remove the fragment. 1251 if (mAdded != null) { 1252 if (DEBUG) Log.v(TAG, "remove from detach: " + fragment); 1253 mAdded.remove(fragment); 1254 } 1255 if (fragment.mHasMenu && fragment.mMenuVisible) { 1256 mNeedMenuInvalidate = true; 1257 } 1258 fragment.mAdded = false; 1259 moveToState(fragment, Fragment.CREATED, transition, transitionStyle, false); 1260 } 1261 } 1262 } 1263 1264 public void attachFragment(Fragment fragment, int transition, int transitionStyle) { 1265 if (DEBUG) Log.v(TAG, "attach: " + fragment); 1266 if (fragment.mDetached) { 1267 fragment.mDetached = false; 1268 if (!fragment.mAdded) { 1269 if (mAdded == null) { 1270 mAdded = new ArrayList<Fragment>(); 1271 } 1272 if (mAdded.contains(fragment)) { 1273 throw new IllegalStateException("Fragment already added: " + fragment); 1274 } 1275 if (DEBUG) Log.v(TAG, "add from attach: " + fragment); 1276 mAdded.add(fragment); 1277 fragment.mAdded = true; 1278 if (fragment.mHasMenu && fragment.mMenuVisible) { 1279 mNeedMenuInvalidate = true; 1280 } 1281 moveToState(fragment, mCurState, transition, transitionStyle, false); 1282 } 1283 } 1284 } 1285 1286 public Fragment findFragmentById(int id) { 1287 if (mAdded != null) { 1288 // First look through added fragments. 1289 for (int i=mAdded.size()-1; i>=0; i--) { 1290 Fragment f = mAdded.get(i); 1291 if (f != null && f.mFragmentId == id) { 1292 return f; 1293 } 1294 } 1295 } 1296 if (mActive != null) { 1297 // Now for any known fragment. 1298 for (int i=mActive.size()-1; i>=0; i--) { 1299 Fragment f = mActive.get(i); 1300 if (f != null && f.mFragmentId == id) { 1301 return f; 1302 } 1303 } 1304 } 1305 return null; 1306 } 1307 1308 public Fragment findFragmentByTag(String tag) { 1309 if (mAdded != null && tag != null) { 1310 // First look through added fragments. 1311 for (int i=mAdded.size()-1; i>=0; i--) { 1312 Fragment f = mAdded.get(i); 1313 if (f != null && tag.equals(f.mTag)) { 1314 return f; 1315 } 1316 } 1317 } 1318 if (mActive != null && tag != null) { 1319 // Now for any known fragment. 1320 for (int i=mActive.size()-1; i>=0; i--) { 1321 Fragment f = mActive.get(i); 1322 if (f != null && tag.equals(f.mTag)) { 1323 return f; 1324 } 1325 } 1326 } 1327 return null; 1328 } 1329 1330 public Fragment findFragmentByWho(String who) { 1331 if (mActive != null && who != null) { 1332 for (int i=mActive.size()-1; i>=0; i--) { 1333 Fragment f = mActive.get(i); 1334 if (f != null && (f=f.findFragmentByWho(who)) != null) { 1335 return f; 1336 } 1337 } 1338 } 1339 return null; 1340 } 1341 1342 private void checkStateLoss() { 1343 if (mStateSaved) { 1344 throw new IllegalStateException( 1345 "Can not perform this action after onSaveInstanceState"); 1346 } 1347 if (mNoTransactionsBecause != null) { 1348 throw new IllegalStateException( 1349 "Can not perform this action inside of " + mNoTransactionsBecause); 1350 } 1351 } 1352 1353 /** 1354 * Adds an action to the queue of pending actions. 1355 * 1356 * @param action the action to add 1357 * @param allowStateLoss whether to allow loss of state information 1358 * @throws IllegalStateException if the activity has been destroyed 1359 */ 1360 public void enqueueAction(Runnable action, boolean allowStateLoss) { 1361 if (!allowStateLoss) { 1362 checkStateLoss(); 1363 } 1364 synchronized (this) { 1365 if (mDestroyed || mActivity == null) { 1366 throw new IllegalStateException("Activity has been destroyed"); 1367 } 1368 if (mPendingActions == null) { 1369 mPendingActions = new ArrayList<Runnable>(); 1370 } 1371 mPendingActions.add(action); 1372 if (mPendingActions.size() == 1) { 1373 mActivity.mHandler.removeCallbacks(mExecCommit); 1374 mActivity.mHandler.post(mExecCommit); 1375 } 1376 } 1377 } 1378 1379 public int allocBackStackIndex(BackStackRecord bse) { 1380 synchronized (this) { 1381 if (mAvailBackStackIndices == null || mAvailBackStackIndices.size() <= 0) { 1382 if (mBackStackIndices == null) { 1383 mBackStackIndices = new ArrayList<BackStackRecord>(); 1384 } 1385 int index = mBackStackIndices.size(); 1386 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1387 mBackStackIndices.add(bse); 1388 return index; 1389 1390 } else { 1391 int index = mAvailBackStackIndices.remove(mAvailBackStackIndices.size()-1); 1392 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1393 mBackStackIndices.set(index, bse); 1394 return index; 1395 } 1396 } 1397 } 1398 1399 public void setBackStackIndex(int index, BackStackRecord bse) { 1400 synchronized (this) { 1401 if (mBackStackIndices == null) { 1402 mBackStackIndices = new ArrayList<BackStackRecord>(); 1403 } 1404 int N = mBackStackIndices.size(); 1405 if (index < N) { 1406 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1407 mBackStackIndices.set(index, bse); 1408 } else { 1409 while (N < index) { 1410 mBackStackIndices.add(null); 1411 if (mAvailBackStackIndices == null) { 1412 mAvailBackStackIndices = new ArrayList<Integer>(); 1413 } 1414 if (DEBUG) Log.v(TAG, "Adding available back stack index " + N); 1415 mAvailBackStackIndices.add(N); 1416 N++; 1417 } 1418 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1419 mBackStackIndices.add(bse); 1420 } 1421 } 1422 } 1423 1424 public void freeBackStackIndex(int index) { 1425 synchronized (this) { 1426 mBackStackIndices.set(index, null); 1427 if (mAvailBackStackIndices == null) { 1428 mAvailBackStackIndices = new ArrayList<Integer>(); 1429 } 1430 if (DEBUG) Log.v(TAG, "Freeing back stack index " + index); 1431 mAvailBackStackIndices.add(index); 1432 } 1433 } 1434 1435 /** 1436 * Only call from main thread! 1437 */ 1438 public boolean execPendingActions() { 1439 if (mExecutingActions) { 1440 throw new IllegalStateException("Recursive entry to executePendingTransactions"); 1441 } 1442 1443 if (Looper.myLooper() != mActivity.mHandler.getLooper()) { 1444 throw new IllegalStateException("Must be called from main thread of process"); 1445 } 1446 1447 boolean didSomething = false; 1448 1449 while (true) { 1450 int numActions; 1451 1452 synchronized (this) { 1453 if (mPendingActions == null || mPendingActions.size() == 0) { 1454 break; 1455 } 1456 1457 numActions = mPendingActions.size(); 1458 if (mTmpActions == null || mTmpActions.length < numActions) { 1459 mTmpActions = new Runnable[numActions]; 1460 } 1461 mPendingActions.toArray(mTmpActions); 1462 mPendingActions.clear(); 1463 mActivity.mHandler.removeCallbacks(mExecCommit); 1464 } 1465 1466 mExecutingActions = true; 1467 for (int i=0; i<numActions; i++) { 1468 mTmpActions[i].run(); 1469 mTmpActions[i] = null; 1470 } 1471 mExecutingActions = false; 1472 didSomething = true; 1473 } 1474 1475 if (mHavePendingDeferredStart) { 1476 boolean loadersRunning = false; 1477 for (int i=0; i<mActive.size(); i++) { 1478 Fragment f = mActive.get(i); 1479 if (f != null && f.mLoaderManager != null) { 1480 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1481 } 1482 } 1483 if (!loadersRunning) { 1484 mHavePendingDeferredStart = false; 1485 startPendingDeferredFragments(); 1486 } 1487 } 1488 return didSomething; 1489 } 1490 1491 void reportBackStackChanged() { 1492 if (mBackStackChangeListeners != null) { 1493 for (int i=0; i<mBackStackChangeListeners.size(); i++) { 1494 mBackStackChangeListeners.get(i).onBackStackChanged(); 1495 } 1496 } 1497 } 1498 1499 void addBackStackState(BackStackRecord state) { 1500 if (mBackStack == null) { 1501 mBackStack = new ArrayList<BackStackRecord>(); 1502 } 1503 mBackStack.add(state); 1504 reportBackStackChanged(); 1505 } 1506 1507 boolean popBackStackState(Handler handler, String name, int id, int flags) { 1508 if (mBackStack == null) { 1509 return false; 1510 } 1511 if (name == null && id < 0 && (flags&POP_BACK_STACK_INCLUSIVE) == 0) { 1512 int last = mBackStack.size()-1; 1513 if (last < 0) { 1514 return false; 1515 } 1516 final BackStackRecord bss = mBackStack.remove(last); 1517 bss.popFromBackStack(true); 1518 reportBackStackChanged(); 1519 } else { 1520 int index = -1; 1521 if (name != null || id >= 0) { 1522 // If a name or ID is specified, look for that place in 1523 // the stack. 1524 index = mBackStack.size()-1; 1525 while (index >= 0) { 1526 BackStackRecord bss = mBackStack.get(index); 1527 if (name != null && name.equals(bss.getName())) { 1528 break; 1529 } 1530 if (id >= 0 && id == bss.mIndex) { 1531 break; 1532 } 1533 index--; 1534 } 1535 if (index < 0) { 1536 return false; 1537 } 1538 if ((flags&POP_BACK_STACK_INCLUSIVE) != 0) { 1539 index--; 1540 // Consume all following entries that match. 1541 while (index >= 0) { 1542 BackStackRecord bss = mBackStack.get(index); 1543 if ((name != null && name.equals(bss.getName())) 1544 || (id >= 0 && id == bss.mIndex)) { 1545 index--; 1546 continue; 1547 } 1548 break; 1549 } 1550 } 1551 } 1552 if (index == mBackStack.size()-1) { 1553 return false; 1554 } 1555 final ArrayList<BackStackRecord> states 1556 = new ArrayList<BackStackRecord>(); 1557 for (int i=mBackStack.size()-1; i>index; i--) { 1558 states.add(mBackStack.remove(i)); 1559 } 1560 final int LAST = states.size()-1; 1561 for (int i=0; i<=LAST; i++) { 1562 if (DEBUG) Log.v(TAG, "Popping back stack state: " + states.get(i)); 1563 states.get(i).popFromBackStack(i == LAST); 1564 } 1565 reportBackStackChanged(); 1566 } 1567 return true; 1568 } 1569 1570 ArrayList<Fragment> retainNonConfig() { 1571 ArrayList<Fragment> fragments = null; 1572 if (mActive != null) { 1573 for (int i=0; i<mActive.size(); i++) { 1574 Fragment f = mActive.get(i); 1575 if (f != null && f.mRetainInstance) { 1576 if (fragments == null) { 1577 fragments = new ArrayList<Fragment>(); 1578 } 1579 fragments.add(f); 1580 f.mRetaining = true; 1581 f.mTargetIndex = f.mTarget != null ? f.mTarget.mIndex : -1; 1582 if (DEBUG) Log.v(TAG, "retainNonConfig: keeping retained " + f); 1583 } 1584 } 1585 } 1586 return fragments; 1587 } 1588 1589 void saveFragmentViewState(Fragment f) { 1590 if (f.mInnerView == null) { 1591 return; 1592 } 1593 if (mStateArray == null) { 1594 mStateArray = new SparseArray<Parcelable>(); 1595 } else { 1596 mStateArray.clear(); 1597 } 1598 f.mInnerView.saveHierarchyState(mStateArray); 1599 if (mStateArray.size() > 0) { 1600 f.mSavedViewState = mStateArray; 1601 mStateArray = null; 1602 } 1603 } 1604 1605 Bundle saveFragmentBasicState(Fragment f) { 1606 Bundle result = null; 1607 1608 if (mStateBundle == null) { 1609 mStateBundle = new Bundle(); 1610 } 1611 f.performSaveInstanceState(mStateBundle); 1612 if (!mStateBundle.isEmpty()) { 1613 result = mStateBundle; 1614 mStateBundle = null; 1615 } 1616 1617 if (f.mView != null) { 1618 saveFragmentViewState(f); 1619 } 1620 if (f.mSavedViewState != null) { 1621 if (result == null) { 1622 result = new Bundle(); 1623 } 1624 result.putSparseParcelableArray( 1625 FragmentManagerImpl.VIEW_STATE_TAG, f.mSavedViewState); 1626 } 1627 if (!f.mUserVisibleHint) { 1628 if (result == null) { 1629 result = new Bundle(); 1630 } 1631 // Only add this if it's not the default value 1632 result.putBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG, f.mUserVisibleHint); 1633 } 1634 1635 return result; 1636 } 1637 1638 Parcelable saveAllState() { 1639 // Make sure all pending operations have now been executed to get 1640 // our state update-to-date. 1641 execPendingActions(); 1642 1643 if (HONEYCOMB) { 1644 // As of Honeycomb, we save state after pausing. Prior to that 1645 // it is before pausing. With fragments this is an issue, since 1646 // there are many things you may do after pausing but before 1647 // stopping that change the fragment state. For those older 1648 // devices, we will not at this point say that we have saved 1649 // the state, so we will allow them to continue doing fragment 1650 // transactions. This retains the same semantics as Honeycomb, 1651 // though you do have the risk of losing the very most recent state 1652 // if the process is killed... we'll live with that. 1653 mStateSaved = true; 1654 } 1655 1656 if (mActive == null || mActive.size() <= 0) { 1657 return null; 1658 } 1659 1660 // First collect all active fragments. 1661 int N = mActive.size(); 1662 FragmentState[] active = new FragmentState[N]; 1663 boolean haveFragments = false; 1664 for (int i=0; i<N; i++) { 1665 Fragment f = mActive.get(i); 1666 if (f != null) { 1667 if (f.mIndex < 0) { 1668 throwException(new IllegalStateException( 1669 "Failure saving state: active " + f 1670 + " has cleared index: " + f.mIndex)); 1671 } 1672 1673 haveFragments = true; 1674 1675 FragmentState fs = new FragmentState(f); 1676 active[i] = fs; 1677 1678 if (f.mState > Fragment.INITIALIZING && fs.mSavedFragmentState == null) { 1679 fs.mSavedFragmentState = saveFragmentBasicState(f); 1680 1681 if (f.mTarget != null) { 1682 if (f.mTarget.mIndex < 0) { 1683 throwException(new IllegalStateException( 1684 "Failure saving state: " + f 1685 + " has target not in fragment manager: " + f.mTarget)); 1686 } 1687 if (fs.mSavedFragmentState == null) { 1688 fs.mSavedFragmentState = new Bundle(); 1689 } 1690 putFragment(fs.mSavedFragmentState, 1691 FragmentManagerImpl.TARGET_STATE_TAG, f.mTarget); 1692 if (f.mTargetRequestCode != 0) { 1693 fs.mSavedFragmentState.putInt( 1694 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 1695 f.mTargetRequestCode); 1696 } 1697 } 1698 1699 } else { 1700 fs.mSavedFragmentState = f.mSavedFragmentState; 1701 } 1702 1703 if (DEBUG) Log.v(TAG, "Saved state of " + f + ": " 1704 + fs.mSavedFragmentState); 1705 } 1706 } 1707 1708 if (!haveFragments) { 1709 if (DEBUG) Log.v(TAG, "saveAllState: no fragments!"); 1710 return null; 1711 } 1712 1713 int[] added = null; 1714 BackStackState[] backStack = null; 1715 1716 // Build list of currently added fragments. 1717 if (mAdded != null) { 1718 N = mAdded.size(); 1719 if (N > 0) { 1720 added = new int[N]; 1721 for (int i=0; i<N; i++) { 1722 added[i] = mAdded.get(i).mIndex; 1723 if (added[i] < 0) { 1724 throwException(new IllegalStateException( 1725 "Failure saving state: active " + mAdded.get(i) 1726 + " has cleared index: " + added[i])); 1727 } 1728 if (DEBUG) Log.v(TAG, "saveAllState: adding fragment #" + i 1729 + ": " + mAdded.get(i)); 1730 } 1731 } 1732 } 1733 1734 // Now save back stack. 1735 if (mBackStack != null) { 1736 N = mBackStack.size(); 1737 if (N > 0) { 1738 backStack = new BackStackState[N]; 1739 for (int i=0; i<N; i++) { 1740 backStack[i] = new BackStackState(this, mBackStack.get(i)); 1741 if (DEBUG) Log.v(TAG, "saveAllState: adding back stack #" + i 1742 + ": " + mBackStack.get(i)); 1743 } 1744 } 1745 } 1746 1747 FragmentManagerState fms = new FragmentManagerState(); 1748 fms.mActive = active; 1749 fms.mAdded = added; 1750 fms.mBackStack = backStack; 1751 return fms; 1752 } 1753 1754 void restoreAllState(Parcelable state, ArrayList<Fragment> nonConfig) { 1755 // If there is no saved state at all, then there can not be 1756 // any nonConfig fragments either, so that is that. 1757 if (state == null) return; 1758 FragmentManagerState fms = (FragmentManagerState)state; 1759 if (fms.mActive == null) return; 1760 1761 // First re-attach any non-config instances we are retaining back 1762 // to their saved state, so we don't try to instantiate them again. 1763 if (nonConfig != null) { 1764 for (int i=0; i<nonConfig.size(); i++) { 1765 Fragment f = nonConfig.get(i); 1766 if (DEBUG) Log.v(TAG, "restoreAllState: re-attaching retained " + f); 1767 FragmentState fs = fms.mActive[f.mIndex]; 1768 fs.mInstance = f; 1769 f.mSavedViewState = null; 1770 f.mBackStackNesting = 0; 1771 f.mInLayout = false; 1772 f.mAdded = false; 1773 f.mTarget = null; 1774 if (fs.mSavedFragmentState != null) { 1775 fs.mSavedFragmentState.setClassLoader(mActivity.getClassLoader()); 1776 f.mSavedViewState = fs.mSavedFragmentState.getSparseParcelableArray( 1777 FragmentManagerImpl.VIEW_STATE_TAG); 1778 } 1779 } 1780 } 1781 1782 // Build the full list of active fragments, instantiating them from 1783 // their saved state. 1784 mActive = new ArrayList<Fragment>(fms.mActive.length); 1785 if (mAvailIndices != null) { 1786 mAvailIndices.clear(); 1787 } 1788 for (int i=0; i<fms.mActive.length; i++) { 1789 FragmentState fs = fms.mActive[i]; 1790 if (fs != null) { 1791 Fragment f = fs.instantiate(mActivity, mParent); 1792 if (DEBUG) Log.v(TAG, "restoreAllState: active #" + i + ": " + f); 1793 mActive.add(f); 1794 // Now that the fragment is instantiated (or came from being 1795 // retained above), clear mInstance in case we end up re-restoring 1796 // from this FragmentState again. 1797 fs.mInstance = null; 1798 } else { 1799 mActive.add(null); 1800 if (mAvailIndices == null) { 1801 mAvailIndices = new ArrayList<Integer>(); 1802 } 1803 if (DEBUG) Log.v(TAG, "restoreAllState: avail #" + i); 1804 mAvailIndices.add(i); 1805 } 1806 } 1807 1808 // Update the target of all retained fragments. 1809 if (nonConfig != null) { 1810 for (int i=0; i<nonConfig.size(); i++) { 1811 Fragment f = nonConfig.get(i); 1812 if (f.mTargetIndex >= 0) { 1813 if (f.mTargetIndex < mActive.size()) { 1814 f.mTarget = mActive.get(f.mTargetIndex); 1815 } else { 1816 Log.w(TAG, "Re-attaching retained fragment " + f 1817 + " target no longer exists: " + f.mTargetIndex); 1818 f.mTarget = null; 1819 } 1820 } 1821 } 1822 } 1823 1824 // Build the list of currently added fragments. 1825 if (fms.mAdded != null) { 1826 mAdded = new ArrayList<Fragment>(fms.mAdded.length); 1827 for (int i=0; i<fms.mAdded.length; i++) { 1828 Fragment f = mActive.get(fms.mAdded[i]); 1829 if (f == null) { 1830 throwException(new IllegalStateException( 1831 "No instantiated fragment for index #" + fms.mAdded[i])); 1832 } 1833 f.mAdded = true; 1834 if (DEBUG) Log.v(TAG, "restoreAllState: added #" + i + ": " + f); 1835 if (mAdded.contains(f)) { 1836 throw new IllegalStateException("Already added!"); 1837 } 1838 mAdded.add(f); 1839 } 1840 } else { 1841 mAdded = null; 1842 } 1843 1844 // Build the back stack. 1845 if (fms.mBackStack != null) { 1846 mBackStack = new ArrayList<BackStackRecord>(fms.mBackStack.length); 1847 for (int i=0; i<fms.mBackStack.length; i++) { 1848 BackStackRecord bse = fms.mBackStack[i].instantiate(this); 1849 if (DEBUG) { 1850 Log.v(TAG, "restoreAllState: back stack #" + i 1851 + " (index " + bse.mIndex + "): " + bse); 1852 LogWriter logw = new LogWriter(TAG); 1853 PrintWriter pw = new PrintWriter(logw); 1854 bse.dump(" ", pw, false); 1855 } 1856 mBackStack.add(bse); 1857 if (bse.mIndex >= 0) { 1858 setBackStackIndex(bse.mIndex, bse); 1859 } 1860 } 1861 } else { 1862 mBackStack = null; 1863 } 1864 } 1865 1866 public void attachActivity(FragmentActivity activity, 1867 FragmentContainer container, Fragment parent) { 1868 if (mActivity != null) throw new IllegalStateException("Already attached"); 1869 mActivity = activity; 1870 mContainer = container; 1871 mParent = parent; 1872 } 1873 1874 public void noteStateNotSaved() { 1875 mStateSaved = false; 1876 } 1877 1878 public void dispatchCreate() { 1879 mStateSaved = false; 1880 moveToState(Fragment.CREATED, false); 1881 } 1882 1883 public void dispatchActivityCreated() { 1884 mStateSaved = false; 1885 moveToState(Fragment.ACTIVITY_CREATED, false); 1886 } 1887 1888 public void dispatchStart() { 1889 mStateSaved = false; 1890 moveToState(Fragment.STARTED, false); 1891 } 1892 1893 public void dispatchResume() { 1894 mStateSaved = false; 1895 moveToState(Fragment.RESUMED, false); 1896 } 1897 1898 public void dispatchPause() { 1899 moveToState(Fragment.STARTED, false); 1900 } 1901 1902 public void dispatchStop() { 1903 // See saveAllState() for the explanation of this. We do this for 1904 // all platform versions, to keep our behavior more consistent between 1905 // them. 1906 mStateSaved = true; 1907 1908 moveToState(Fragment.STOPPED, false); 1909 } 1910 1911 public void dispatchReallyStop() { 1912 moveToState(Fragment.ACTIVITY_CREATED, false); 1913 } 1914 1915 public void dispatchDestroyView() { 1916 moveToState(Fragment.CREATED, false); 1917 } 1918 1919 public void dispatchDestroy() { 1920 mDestroyed = true; 1921 execPendingActions(); 1922 moveToState(Fragment.INITIALIZING, false); 1923 mActivity = null; 1924 mContainer = null; 1925 mParent = null; 1926 } 1927 1928 public void dispatchConfigurationChanged(Configuration newConfig) { 1929 if (mAdded != null) { 1930 for (int i=0; i<mAdded.size(); i++) { 1931 Fragment f = mAdded.get(i); 1932 if (f != null) { 1933 f.performConfigurationChanged(newConfig); 1934 } 1935 } 1936 } 1937 } 1938 1939 public void dispatchLowMemory() { 1940 if (mAdded != null) { 1941 for (int i=0; i<mAdded.size(); i++) { 1942 Fragment f = mAdded.get(i); 1943 if (f != null) { 1944 f.performLowMemory(); 1945 } 1946 } 1947 } 1948 } 1949 1950 public boolean dispatchCreateOptionsMenu(Menu menu, MenuInflater inflater) { 1951 boolean show = false; 1952 ArrayList<Fragment> newMenus = null; 1953 if (mAdded != null) { 1954 for (int i=0; i<mAdded.size(); i++) { 1955 Fragment f = mAdded.get(i); 1956 if (f != null) { 1957 if (f.performCreateOptionsMenu(menu, inflater)) { 1958 show = true; 1959 if (newMenus == null) { 1960 newMenus = new ArrayList<Fragment>(); 1961 } 1962 newMenus.add(f); 1963 } 1964 } 1965 } 1966 } 1967 1968 if (mCreatedMenus != null) { 1969 for (int i=0; i<mCreatedMenus.size(); i++) { 1970 Fragment f = mCreatedMenus.get(i); 1971 if (newMenus == null || !newMenus.contains(f)) { 1972 f.onDestroyOptionsMenu(); 1973 } 1974 } 1975 } 1976 1977 mCreatedMenus = newMenus; 1978 1979 return show; 1980 } 1981 1982 public boolean dispatchPrepareOptionsMenu(Menu menu) { 1983 boolean show = false; 1984 if (mAdded != null) { 1985 for (int i=0; i<mAdded.size(); i++) { 1986 Fragment f = mAdded.get(i); 1987 if (f != null) { 1988 if (f.performPrepareOptionsMenu(menu)) { 1989 show = true; 1990 } 1991 } 1992 } 1993 } 1994 return show; 1995 } 1996 1997 public boolean dispatchOptionsItemSelected(MenuItem item) { 1998 if (mAdded != null) { 1999 for (int i=0; i<mAdded.size(); i++) { 2000 Fragment f = mAdded.get(i); 2001 if (f != null) { 2002 if (f.performOptionsItemSelected(item)) { 2003 return true; 2004 } 2005 } 2006 } 2007 } 2008 return false; 2009 } 2010 2011 public boolean dispatchContextItemSelected(MenuItem item) { 2012 if (mAdded != null) { 2013 for (int i=0; i<mAdded.size(); i++) { 2014 Fragment f = mAdded.get(i); 2015 if (f != null) { 2016 if (f.performContextItemSelected(item)) { 2017 return true; 2018 } 2019 } 2020 } 2021 } 2022 return false; 2023 } 2024 2025 public void dispatchOptionsMenuClosed(Menu menu) { 2026 if (mAdded != null) { 2027 for (int i=0; i<mAdded.size(); i++) { 2028 Fragment f = mAdded.get(i); 2029 if (f != null) { 2030 f.performOptionsMenuClosed(menu); 2031 } 2032 } 2033 } 2034 } 2035 2036 public static int reverseTransit(int transit) { 2037 int rev = 0; 2038 switch (transit) { 2039 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2040 rev = FragmentTransaction.TRANSIT_FRAGMENT_CLOSE; 2041 break; 2042 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2043 rev = FragmentTransaction.TRANSIT_FRAGMENT_OPEN; 2044 break; 2045 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2046 rev = FragmentTransaction.TRANSIT_FRAGMENT_FADE; 2047 break; 2048 } 2049 return rev; 2050 2051 } 2052 2053 public static final int ANIM_STYLE_OPEN_ENTER = 1; 2054 public static final int ANIM_STYLE_OPEN_EXIT = 2; 2055 public static final int ANIM_STYLE_CLOSE_ENTER = 3; 2056 public static final int ANIM_STYLE_CLOSE_EXIT = 4; 2057 public static final int ANIM_STYLE_FADE_ENTER = 5; 2058 public static final int ANIM_STYLE_FADE_EXIT = 6; 2059 2060 public static int transitToStyleIndex(int transit, boolean enter) { 2061 int animAttr = -1; 2062 switch (transit) { 2063 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2064 animAttr = enter ? ANIM_STYLE_OPEN_ENTER : ANIM_STYLE_OPEN_EXIT; 2065 break; 2066 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2067 animAttr = enter ? ANIM_STYLE_CLOSE_ENTER : ANIM_STYLE_CLOSE_EXIT; 2068 break; 2069 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2070 animAttr = enter ? ANIM_STYLE_FADE_ENTER : ANIM_STYLE_FADE_EXIT; 2071 break; 2072 } 2073 return animAttr; 2074 } 2075} 2076