FragmentManager.java revision ab6e5dbcc6e05994ebb4257478c54f54085b9aa6
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("Fragement no longer exists for key " 571 + key + ": index " + index)); 572 } 573 Fragment f = mActive.get(index); 574 if (f == null) { 575 throwException(new IllegalStateException("Fragement 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.mSavedViewState = f.mSavedFragmentState.getSparseParcelableArray( 862 FragmentManagerImpl.VIEW_STATE_TAG); 863 f.mTarget = getFragment(f.mSavedFragmentState, 864 FragmentManagerImpl.TARGET_STATE_TAG); 865 if (f.mTarget != null) { 866 f.mTargetRequestCode = f.mSavedFragmentState.getInt( 867 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0); 868 } 869 f.mUserVisibleHint = f.mSavedFragmentState.getBoolean( 870 FragmentManagerImpl.USER_VISIBLE_HINT_TAG, true); 871 if (!f.mUserVisibleHint) { 872 f.mDeferStart = true; 873 if (newState > Fragment.STOPPED) { 874 newState = Fragment.STOPPED; 875 } 876 } 877 } 878 f.mActivity = mActivity; 879 f.mParentFragment = mParent; 880 f.mFragmentManager = mParent != null 881 ? mParent.mChildFragmentManager : mActivity.mFragments; 882 f.mCalled = false; 883 f.onAttach(mActivity); 884 if (!f.mCalled) { 885 throw new SuperNotCalledException("Fragment " + f 886 + " did not call through to super.onAttach()"); 887 } 888 if (f.mParentFragment == null) { 889 mActivity.onAttachFragment(f); 890 } 891 892 if (!f.mRetaining) { 893 f.performCreate(f.mSavedFragmentState); 894 } 895 f.mRetaining = false; 896 if (f.mFromLayout) { 897 // For fragments that are part of the content view 898 // layout, we need to instantiate the view immediately 899 // and the inflater will take care of adding it. 900 f.mView = f.performCreateView(f.getLayoutInflater( 901 f.mSavedFragmentState), null, f.mSavedFragmentState); 902 if (f.mView != null) { 903 f.mInnerView = f.mView; 904 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 905 if (f.mHidden) f.mView.setVisibility(View.GONE); 906 f.onViewCreated(f.mView, f.mSavedFragmentState); 907 } else { 908 f.mInnerView = null; 909 } 910 } 911 case Fragment.CREATED: 912 if (newState > Fragment.CREATED) { 913 if (DEBUG) Log.v(TAG, "moveto ACTIVITY_CREATED: " + f); 914 if (!f.mFromLayout) { 915 ViewGroup container = null; 916 if (f.mContainerId != 0) { 917 container = (ViewGroup)mContainer.findViewById(f.mContainerId); 918 if (container == null && !f.mRestored) { 919 throwException(new IllegalArgumentException( 920 "No view found for id 0x" 921 + Integer.toHexString(f.mContainerId) + " (" 922 + f.getResources().getResourceName(f.mContainerId) 923 + ") for fragment " + f)); 924 } 925 } 926 f.mContainer = container; 927 f.mView = f.performCreateView(f.getLayoutInflater( 928 f.mSavedFragmentState), container, f.mSavedFragmentState); 929 if (f.mView != null) { 930 f.mInnerView = f.mView; 931 f.mView = NoSaveStateFrameLayout.wrap(f.mView); 932 if (container != null) { 933 Animation anim = loadAnimation(f, transit, true, 934 transitionStyle); 935 if (anim != null) { 936 f.mView.startAnimation(anim); 937 } 938 container.addView(f.mView); 939 } 940 if (f.mHidden) f.mView.setVisibility(View.GONE); 941 f.onViewCreated(f.mView, f.mSavedFragmentState); 942 } else { 943 f.mInnerView = null; 944 } 945 } 946 947 f.performActivityCreated(f.mSavedFragmentState); 948 if (f.mView != null) { 949 f.restoreViewState(f.mSavedFragmentState); 950 } 951 f.mSavedFragmentState = null; 952 } 953 case Fragment.ACTIVITY_CREATED: 954 case Fragment.STOPPED: 955 if (newState > Fragment.STOPPED) { 956 if (DEBUG) Log.v(TAG, "moveto STARTED: " + f); 957 f.performStart(); 958 } 959 case Fragment.STARTED: 960 if (newState > Fragment.STARTED) { 961 if (DEBUG) Log.v(TAG, "moveto RESUMED: " + f); 962 f.mResumed = true; 963 f.performResume(); 964 f.mSavedFragmentState = null; 965 f.mSavedViewState = null; 966 } 967 } 968 } else if (f.mState > newState) { 969 switch (f.mState) { 970 case Fragment.RESUMED: 971 if (newState < Fragment.RESUMED) { 972 if (DEBUG) Log.v(TAG, "movefrom RESUMED: " + f); 973 f.performPause(); 974 f.mResumed = false; 975 } 976 case Fragment.STARTED: 977 if (newState < Fragment.STARTED) { 978 if (DEBUG) Log.v(TAG, "movefrom STARTED: " + f); 979 f.performStop(); 980 } 981 case Fragment.STOPPED: 982 if (newState < Fragment.STOPPED) { 983 if (DEBUG) Log.v(TAG, "movefrom STOPPED: " + f); 984 f.performReallyStop(); 985 } 986 case Fragment.ACTIVITY_CREATED: 987 if (newState < Fragment.ACTIVITY_CREATED) { 988 if (DEBUG) Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f); 989 if (f.mView != null) { 990 // Need to save the current view state if not 991 // done already. 992 if (!mActivity.isFinishing() && f.mSavedViewState == null) { 993 saveFragmentViewState(f); 994 } 995 } 996 f.performDestroyView(); 997 if (f.mView != null && f.mContainer != null) { 998 Animation anim = null; 999 if (mCurState > Fragment.INITIALIZING && !mDestroyed) { 1000 anim = loadAnimation(f, transit, false, 1001 transitionStyle); 1002 } 1003 if (anim != null) { 1004 final Fragment fragment = f; 1005 f.mAnimatingAway = f.mView; 1006 f.mStateAfterAnimating = newState; 1007 anim.setAnimationListener(new AnimationListener() { 1008 @Override 1009 public void onAnimationEnd(Animation animation) { 1010 if (fragment.mAnimatingAway != null) { 1011 fragment.mAnimatingAway = null; 1012 moveToState(fragment, fragment.mStateAfterAnimating, 1013 0, 0, false); 1014 } 1015 } 1016 @Override 1017 public void onAnimationRepeat(Animation animation) { 1018 } 1019 @Override 1020 public void onAnimationStart(Animation animation) { 1021 } 1022 }); 1023 f.mView.startAnimation(anim); 1024 } 1025 f.mContainer.removeView(f.mView); 1026 } 1027 f.mContainer = null; 1028 f.mView = null; 1029 f.mInnerView = null; 1030 } 1031 case Fragment.CREATED: 1032 if (newState < Fragment.CREATED) { 1033 if (mDestroyed) { 1034 if (f.mAnimatingAway != null) { 1035 // The fragment's containing activity is 1036 // being destroyed, but this fragment is 1037 // currently animating away. Stop the 1038 // animation right now -- it is not needed, 1039 // and we can't wait any more on destroying 1040 // the fragment. 1041 View v = f.mAnimatingAway; 1042 f.mAnimatingAway = null; 1043 v.clearAnimation(); 1044 } 1045 } 1046 if (f.mAnimatingAway != null) { 1047 // We are waiting for the fragment's view to finish 1048 // animating away. Just make a note of the state 1049 // the fragment now should move to once the animation 1050 // is done. 1051 f.mStateAfterAnimating = newState; 1052 newState = Fragment.CREATED; 1053 } else { 1054 if (DEBUG) Log.v(TAG, "movefrom CREATED: " + f); 1055 if (!f.mRetaining) { 1056 f.performDestroy(); 1057 } 1058 1059 f.mCalled = false; 1060 f.onDetach(); 1061 if (!f.mCalled) { 1062 throw new SuperNotCalledException("Fragment " + f 1063 + " did not call through to super.onDetach()"); 1064 } 1065 if (!keepActive) { 1066 if (!f.mRetaining) { 1067 makeInactive(f); 1068 } else { 1069 f.mActivity = null; 1070 f.mFragmentManager = null; 1071 } 1072 } 1073 } 1074 } 1075 } 1076 } 1077 1078 f.mState = newState; 1079 } 1080 1081 void moveToState(Fragment f) { 1082 moveToState(f, mCurState, 0, 0, false); 1083 } 1084 1085 void moveToState(int newState, boolean always) { 1086 moveToState(newState, 0, 0, always); 1087 } 1088 1089 void moveToState(int newState, int transit, int transitStyle, boolean always) { 1090 if (mActivity == null && newState != Fragment.INITIALIZING) { 1091 throw new IllegalStateException("No activity"); 1092 } 1093 1094 if (!always && mCurState == newState) { 1095 return; 1096 } 1097 1098 mCurState = newState; 1099 if (mActive != null) { 1100 boolean loadersRunning = false; 1101 for (int i=0; i<mActive.size(); i++) { 1102 Fragment f = mActive.get(i); 1103 if (f != null) { 1104 moveToState(f, newState, transit, transitStyle, false); 1105 if (f.mLoaderManager != null) { 1106 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1107 } 1108 } 1109 } 1110 1111 if (!loadersRunning) { 1112 startPendingDeferredFragments(); 1113 } 1114 1115 if (mNeedMenuInvalidate && mActivity != null && mCurState == Fragment.RESUMED) { 1116 mActivity.supportInvalidateOptionsMenu(); 1117 mNeedMenuInvalidate = false; 1118 } 1119 } 1120 } 1121 1122 void startPendingDeferredFragments() { 1123 if (mActive == null) return; 1124 1125 for (int i=0; i<mActive.size(); i++) { 1126 Fragment f = mActive.get(i); 1127 if (f != null) { 1128 performPendingDeferredStart(f); 1129 } 1130 } 1131 } 1132 1133 void makeActive(Fragment f) { 1134 if (f.mIndex >= 0) { 1135 return; 1136 } 1137 1138 if (mAvailIndices == null || mAvailIndices.size() <= 0) { 1139 if (mActive == null) { 1140 mActive = new ArrayList<Fragment>(); 1141 } 1142 f.setIndex(mActive.size(), mParent); 1143 mActive.add(f); 1144 1145 } else { 1146 f.setIndex(mAvailIndices.remove(mAvailIndices.size()-1), mParent); 1147 mActive.set(f.mIndex, f); 1148 } 1149 if (DEBUG) Log.v(TAG, "Allocated fragment index " + f); 1150 } 1151 1152 void makeInactive(Fragment f) { 1153 if (f.mIndex < 0) { 1154 return; 1155 } 1156 1157 if (DEBUG) Log.v(TAG, "Freeing fragment index " + f); 1158 mActive.set(f.mIndex, null); 1159 if (mAvailIndices == null) { 1160 mAvailIndices = new ArrayList<Integer>(); 1161 } 1162 mAvailIndices.add(f.mIndex); 1163 mActivity.invalidateSupportFragment(f.mWho); 1164 f.initState(); 1165 } 1166 1167 public void addFragment(Fragment fragment, boolean moveToStateNow) { 1168 if (mAdded == null) { 1169 mAdded = new ArrayList<Fragment>(); 1170 } 1171 if (DEBUG) Log.v(TAG, "add: " + fragment); 1172 makeActive(fragment); 1173 if (!fragment.mDetached) { 1174 if (mAdded.contains(fragment)) { 1175 throw new IllegalStateException("Fragment already added: " + fragment); 1176 } 1177 mAdded.add(fragment); 1178 fragment.mAdded = true; 1179 fragment.mRemoving = false; 1180 if (fragment.mHasMenu && fragment.mMenuVisible) { 1181 mNeedMenuInvalidate = true; 1182 } 1183 if (moveToStateNow) { 1184 moveToState(fragment); 1185 } 1186 } 1187 } 1188 1189 public void removeFragment(Fragment fragment, int transition, int transitionStyle) { 1190 if (DEBUG) Log.v(TAG, "remove: " + fragment + " nesting=" + fragment.mBackStackNesting); 1191 final boolean inactive = !fragment.isInBackStack(); 1192 if (!fragment.mDetached || inactive) { 1193 if (mAdded != null) { 1194 mAdded.remove(fragment); 1195 } 1196 if (fragment.mHasMenu && fragment.mMenuVisible) { 1197 mNeedMenuInvalidate = true; 1198 } 1199 fragment.mAdded = false; 1200 fragment.mRemoving = true; 1201 moveToState(fragment, inactive ? Fragment.INITIALIZING : Fragment.CREATED, 1202 transition, transitionStyle, false); 1203 } 1204 } 1205 1206 public void hideFragment(Fragment fragment, int transition, int transitionStyle) { 1207 if (DEBUG) Log.v(TAG, "hide: " + fragment); 1208 if (!fragment.mHidden) { 1209 fragment.mHidden = true; 1210 if (fragment.mView != null) { 1211 Animation anim = loadAnimation(fragment, transition, false, 1212 transitionStyle); 1213 if (anim != null) { 1214 fragment.mView.startAnimation(anim); 1215 } 1216 fragment.mView.setVisibility(View.GONE); 1217 } 1218 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1219 mNeedMenuInvalidate = true; 1220 } 1221 fragment.onHiddenChanged(true); 1222 } 1223 } 1224 1225 public void showFragment(Fragment fragment, int transition, int transitionStyle) { 1226 if (DEBUG) Log.v(TAG, "show: " + fragment); 1227 if (fragment.mHidden) { 1228 fragment.mHidden = false; 1229 if (fragment.mView != null) { 1230 Animation anim = loadAnimation(fragment, transition, true, 1231 transitionStyle); 1232 if (anim != null) { 1233 fragment.mView.startAnimation(anim); 1234 } 1235 fragment.mView.setVisibility(View.VISIBLE); 1236 } 1237 if (fragment.mAdded && fragment.mHasMenu && fragment.mMenuVisible) { 1238 mNeedMenuInvalidate = true; 1239 } 1240 fragment.onHiddenChanged(false); 1241 } 1242 } 1243 1244 public void detachFragment(Fragment fragment, int transition, int transitionStyle) { 1245 if (DEBUG) Log.v(TAG, "detach: " + fragment); 1246 if (!fragment.mDetached) { 1247 fragment.mDetached = true; 1248 if (fragment.mAdded) { 1249 // We are not already in back stack, so need to remove the fragment. 1250 if (mAdded != null) { 1251 if (DEBUG) Log.v(TAG, "remove from detach: " + fragment); 1252 mAdded.remove(fragment); 1253 } 1254 if (fragment.mHasMenu && fragment.mMenuVisible) { 1255 mNeedMenuInvalidate = true; 1256 } 1257 fragment.mAdded = false; 1258 moveToState(fragment, Fragment.CREATED, transition, transitionStyle, false); 1259 } 1260 } 1261 } 1262 1263 public void attachFragment(Fragment fragment, int transition, int transitionStyle) { 1264 if (DEBUG) Log.v(TAG, "attach: " + fragment); 1265 if (fragment.mDetached) { 1266 fragment.mDetached = false; 1267 if (!fragment.mAdded) { 1268 if (mAdded == null) { 1269 mAdded = new ArrayList<Fragment>(); 1270 } 1271 if (mAdded.contains(fragment)) { 1272 throw new IllegalStateException("Fragment already added: " + fragment); 1273 } 1274 if (DEBUG) Log.v(TAG, "add from attach: " + fragment); 1275 mAdded.add(fragment); 1276 fragment.mAdded = true; 1277 if (fragment.mHasMenu && fragment.mMenuVisible) { 1278 mNeedMenuInvalidate = true; 1279 } 1280 moveToState(fragment, mCurState, transition, transitionStyle, false); 1281 } 1282 } 1283 } 1284 1285 public Fragment findFragmentById(int id) { 1286 if (mAdded != null) { 1287 // First look through added fragments. 1288 for (int i=mAdded.size()-1; i>=0; i--) { 1289 Fragment f = mAdded.get(i); 1290 if (f != null && f.mFragmentId == id) { 1291 return f; 1292 } 1293 } 1294 } 1295 if (mActive != null) { 1296 // Now for any known fragment. 1297 for (int i=mActive.size()-1; i>=0; i--) { 1298 Fragment f = mActive.get(i); 1299 if (f != null && f.mFragmentId == id) { 1300 return f; 1301 } 1302 } 1303 } 1304 return null; 1305 } 1306 1307 public Fragment findFragmentByTag(String tag) { 1308 if (mAdded != null && tag != null) { 1309 // First look through added fragments. 1310 for (int i=mAdded.size()-1; i>=0; i--) { 1311 Fragment f = mAdded.get(i); 1312 if (f != null && tag.equals(f.mTag)) { 1313 return f; 1314 } 1315 } 1316 } 1317 if (mActive != null && tag != null) { 1318 // Now for any known fragment. 1319 for (int i=mActive.size()-1; i>=0; i--) { 1320 Fragment f = mActive.get(i); 1321 if (f != null && tag.equals(f.mTag)) { 1322 return f; 1323 } 1324 } 1325 } 1326 return null; 1327 } 1328 1329 public Fragment findFragmentByWho(String who) { 1330 if (mActive != null && who != null) { 1331 for (int i=mActive.size()-1; i>=0; i--) { 1332 Fragment f = mActive.get(i); 1333 if (f != null && (f=f.findFragmentByWho(who)) != null) { 1334 return f; 1335 } 1336 } 1337 } 1338 return null; 1339 } 1340 1341 private void checkStateLoss() { 1342 if (mStateSaved) { 1343 throw new IllegalStateException( 1344 "Can not perform this action after onSaveInstanceState"); 1345 } 1346 if (mNoTransactionsBecause != null) { 1347 throw new IllegalStateException( 1348 "Can not perform this action inside of " + mNoTransactionsBecause); 1349 } 1350 } 1351 1352 /** 1353 * Adds an action to the queue of pending actions. 1354 * 1355 * @param action the action to add 1356 * @param allowStateLoss whether to allow loss of state information 1357 * @throws IllegalStateException if the activity has been destroyed 1358 */ 1359 public void enqueueAction(Runnable action, boolean allowStateLoss) { 1360 if (!allowStateLoss) { 1361 checkStateLoss(); 1362 } 1363 synchronized (this) { 1364 if (mDestroyed || mActivity == null) { 1365 throw new IllegalStateException("Activity has been destroyed"); 1366 } 1367 if (mPendingActions == null) { 1368 mPendingActions = new ArrayList<Runnable>(); 1369 } 1370 mPendingActions.add(action); 1371 if (mPendingActions.size() == 1) { 1372 mActivity.mHandler.removeCallbacks(mExecCommit); 1373 mActivity.mHandler.post(mExecCommit); 1374 } 1375 } 1376 } 1377 1378 public int allocBackStackIndex(BackStackRecord bse) { 1379 synchronized (this) { 1380 if (mAvailBackStackIndices == null || mAvailBackStackIndices.size() <= 0) { 1381 if (mBackStackIndices == null) { 1382 mBackStackIndices = new ArrayList<BackStackRecord>(); 1383 } 1384 int index = mBackStackIndices.size(); 1385 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1386 mBackStackIndices.add(bse); 1387 return index; 1388 1389 } else { 1390 int index = mAvailBackStackIndices.remove(mAvailBackStackIndices.size()-1); 1391 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1392 mBackStackIndices.set(index, bse); 1393 return index; 1394 } 1395 } 1396 } 1397 1398 public void setBackStackIndex(int index, BackStackRecord bse) { 1399 synchronized (this) { 1400 if (mBackStackIndices == null) { 1401 mBackStackIndices = new ArrayList<BackStackRecord>(); 1402 } 1403 int N = mBackStackIndices.size(); 1404 if (index < N) { 1405 if (DEBUG) Log.v(TAG, "Setting back stack index " + index + " to " + bse); 1406 mBackStackIndices.set(index, bse); 1407 } else { 1408 while (N < index) { 1409 mBackStackIndices.add(null); 1410 if (mAvailBackStackIndices == null) { 1411 mAvailBackStackIndices = new ArrayList<Integer>(); 1412 } 1413 if (DEBUG) Log.v(TAG, "Adding available back stack index " + N); 1414 mAvailBackStackIndices.add(N); 1415 N++; 1416 } 1417 if (DEBUG) Log.v(TAG, "Adding back stack index " + index + " with " + bse); 1418 mBackStackIndices.add(bse); 1419 } 1420 } 1421 } 1422 1423 public void freeBackStackIndex(int index) { 1424 synchronized (this) { 1425 mBackStackIndices.set(index, null); 1426 if (mAvailBackStackIndices == null) { 1427 mAvailBackStackIndices = new ArrayList<Integer>(); 1428 } 1429 if (DEBUG) Log.v(TAG, "Freeing back stack index " + index); 1430 mAvailBackStackIndices.add(index); 1431 } 1432 } 1433 1434 /** 1435 * Only call from main thread! 1436 */ 1437 public boolean execPendingActions() { 1438 if (mExecutingActions) { 1439 throw new IllegalStateException("Recursive entry to executePendingTransactions"); 1440 } 1441 1442 if (Looper.myLooper() != mActivity.mHandler.getLooper()) { 1443 throw new IllegalStateException("Must be called from main thread of process"); 1444 } 1445 1446 boolean didSomething = false; 1447 1448 while (true) { 1449 int numActions; 1450 1451 synchronized (this) { 1452 if (mPendingActions == null || mPendingActions.size() == 0) { 1453 break; 1454 } 1455 1456 numActions = mPendingActions.size(); 1457 if (mTmpActions == null || mTmpActions.length < numActions) { 1458 mTmpActions = new Runnable[numActions]; 1459 } 1460 mPendingActions.toArray(mTmpActions); 1461 mPendingActions.clear(); 1462 mActivity.mHandler.removeCallbacks(mExecCommit); 1463 } 1464 1465 mExecutingActions = true; 1466 for (int i=0; i<numActions; i++) { 1467 mTmpActions[i].run(); 1468 mTmpActions[i] = null; 1469 } 1470 mExecutingActions = false; 1471 didSomething = true; 1472 } 1473 1474 if (mHavePendingDeferredStart) { 1475 boolean loadersRunning = false; 1476 for (int i=0; i<mActive.size(); i++) { 1477 Fragment f = mActive.get(i); 1478 if (f != null && f.mLoaderManager != null) { 1479 loadersRunning |= f.mLoaderManager.hasRunningLoaders(); 1480 } 1481 } 1482 if (!loadersRunning) { 1483 mHavePendingDeferredStart = false; 1484 startPendingDeferredFragments(); 1485 } 1486 } 1487 return didSomething; 1488 } 1489 1490 void reportBackStackChanged() { 1491 if (mBackStackChangeListeners != null) { 1492 for (int i=0; i<mBackStackChangeListeners.size(); i++) { 1493 mBackStackChangeListeners.get(i).onBackStackChanged(); 1494 } 1495 } 1496 } 1497 1498 void addBackStackState(BackStackRecord state) { 1499 if (mBackStack == null) { 1500 mBackStack = new ArrayList<BackStackRecord>(); 1501 } 1502 mBackStack.add(state); 1503 reportBackStackChanged(); 1504 } 1505 1506 boolean popBackStackState(Handler handler, String name, int id, int flags) { 1507 if (mBackStack == null) { 1508 return false; 1509 } 1510 if (name == null && id < 0 && (flags&POP_BACK_STACK_INCLUSIVE) == 0) { 1511 int last = mBackStack.size()-1; 1512 if (last < 0) { 1513 return false; 1514 } 1515 final BackStackRecord bss = mBackStack.remove(last); 1516 bss.popFromBackStack(true); 1517 reportBackStackChanged(); 1518 } else { 1519 int index = -1; 1520 if (name != null || id >= 0) { 1521 // If a name or ID is specified, look for that place in 1522 // the stack. 1523 index = mBackStack.size()-1; 1524 while (index >= 0) { 1525 BackStackRecord bss = mBackStack.get(index); 1526 if (name != null && name.equals(bss.getName())) { 1527 break; 1528 } 1529 if (id >= 0 && id == bss.mIndex) { 1530 break; 1531 } 1532 index--; 1533 } 1534 if (index < 0) { 1535 return false; 1536 } 1537 if ((flags&POP_BACK_STACK_INCLUSIVE) != 0) { 1538 index--; 1539 // Consume all following entries that match. 1540 while (index >= 0) { 1541 BackStackRecord bss = mBackStack.get(index); 1542 if ((name != null && name.equals(bss.getName())) 1543 || (id >= 0 && id == bss.mIndex)) { 1544 index--; 1545 continue; 1546 } 1547 break; 1548 } 1549 } 1550 } 1551 if (index == mBackStack.size()-1) { 1552 return false; 1553 } 1554 final ArrayList<BackStackRecord> states 1555 = new ArrayList<BackStackRecord>(); 1556 for (int i=mBackStack.size()-1; i>index; i--) { 1557 states.add(mBackStack.remove(i)); 1558 } 1559 final int LAST = states.size()-1; 1560 for (int i=0; i<=LAST; i++) { 1561 if (DEBUG) Log.v(TAG, "Popping back stack state: " + states.get(i)); 1562 states.get(i).popFromBackStack(i == LAST); 1563 } 1564 reportBackStackChanged(); 1565 } 1566 return true; 1567 } 1568 1569 ArrayList<Fragment> retainNonConfig() { 1570 ArrayList<Fragment> fragments = null; 1571 if (mActive != null) { 1572 for (int i=0; i<mActive.size(); i++) { 1573 Fragment f = mActive.get(i); 1574 if (f != null && f.mRetainInstance) { 1575 if (fragments == null) { 1576 fragments = new ArrayList<Fragment>(); 1577 } 1578 fragments.add(f); 1579 f.mRetaining = true; 1580 f.mTargetIndex = f.mTarget != null ? f.mTarget.mIndex : -1; 1581 if (DEBUG) Log.v(TAG, "retainNonConfig: keeping retained " + f); 1582 } 1583 } 1584 } 1585 return fragments; 1586 } 1587 1588 void saveFragmentViewState(Fragment f) { 1589 if (f.mInnerView == null) { 1590 return; 1591 } 1592 if (mStateArray == null) { 1593 mStateArray = new SparseArray<Parcelable>(); 1594 } else { 1595 mStateArray.clear(); 1596 } 1597 f.mInnerView.saveHierarchyState(mStateArray); 1598 if (mStateArray.size() > 0) { 1599 f.mSavedViewState = mStateArray; 1600 mStateArray = null; 1601 } 1602 } 1603 1604 Bundle saveFragmentBasicState(Fragment f) { 1605 Bundle result = null; 1606 1607 if (mStateBundle == null) { 1608 mStateBundle = new Bundle(); 1609 } 1610 f.performSaveInstanceState(mStateBundle); 1611 if (!mStateBundle.isEmpty()) { 1612 result = mStateBundle; 1613 mStateBundle = null; 1614 } 1615 1616 if (f.mView != null) { 1617 saveFragmentViewState(f); 1618 } 1619 if (f.mSavedViewState != null) { 1620 if (result == null) { 1621 result = new Bundle(); 1622 } 1623 result.putSparseParcelableArray( 1624 FragmentManagerImpl.VIEW_STATE_TAG, f.mSavedViewState); 1625 } 1626 if (!f.mUserVisibleHint) { 1627 if (result == null) { 1628 result = new Bundle(); 1629 } 1630 // Only add this if it's not the default value 1631 result.putBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG, f.mUserVisibleHint); 1632 } 1633 1634 return result; 1635 } 1636 1637 Parcelable saveAllState() { 1638 // Make sure all pending operations have now been executed to get 1639 // our state update-to-date. 1640 execPendingActions(); 1641 1642 if (HONEYCOMB) { 1643 // As of Honeycomb, we save state after pausing. Prior to that 1644 // it is before pausing. With fragments this is an issue, since 1645 // there are many things you may do after pausing but before 1646 // stopping that change the fragment state. For those older 1647 // devices, we will not at this point say that we have saved 1648 // the state, so we will allow them to continue doing fragment 1649 // transactions. This retains the same semantics as Honeycomb, 1650 // though you do have the risk of losing the very most recent state 1651 // if the process is killed... we'll live with that. 1652 mStateSaved = true; 1653 } 1654 1655 if (mActive == null || mActive.size() <= 0) { 1656 return null; 1657 } 1658 1659 // First collect all active fragments. 1660 int N = mActive.size(); 1661 FragmentState[] active = new FragmentState[N]; 1662 boolean haveFragments = false; 1663 for (int i=0; i<N; i++) { 1664 Fragment f = mActive.get(i); 1665 if (f != null) { 1666 if (f.mIndex < 0) { 1667 throwException(new IllegalStateException( 1668 "Failure saving state: active " + f 1669 + " has cleared index: " + f.mIndex)); 1670 } 1671 1672 haveFragments = true; 1673 1674 FragmentState fs = new FragmentState(f); 1675 active[i] = fs; 1676 1677 if (f.mState > Fragment.INITIALIZING && fs.mSavedFragmentState == null) { 1678 fs.mSavedFragmentState = saveFragmentBasicState(f); 1679 1680 if (f.mTarget != null) { 1681 if (f.mTarget.mIndex < 0) { 1682 throwException(new IllegalStateException( 1683 "Failure saving state: " + f 1684 + " has target not in fragment manager: " + f.mTarget)); 1685 } 1686 if (fs.mSavedFragmentState == null) { 1687 fs.mSavedFragmentState = new Bundle(); 1688 } 1689 putFragment(fs.mSavedFragmentState, 1690 FragmentManagerImpl.TARGET_STATE_TAG, f.mTarget); 1691 if (f.mTargetRequestCode != 0) { 1692 fs.mSavedFragmentState.putInt( 1693 FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 1694 f.mTargetRequestCode); 1695 } 1696 } 1697 1698 } else { 1699 fs.mSavedFragmentState = f.mSavedFragmentState; 1700 } 1701 1702 if (DEBUG) Log.v(TAG, "Saved state of " + f + ": " 1703 + fs.mSavedFragmentState); 1704 } 1705 } 1706 1707 if (!haveFragments) { 1708 if (DEBUG) Log.v(TAG, "saveAllState: no fragments!"); 1709 return null; 1710 } 1711 1712 int[] added = null; 1713 BackStackState[] backStack = null; 1714 1715 // Build list of currently added fragments. 1716 if (mAdded != null) { 1717 N = mAdded.size(); 1718 if (N > 0) { 1719 added = new int[N]; 1720 for (int i=0; i<N; i++) { 1721 added[i] = mAdded.get(i).mIndex; 1722 if (added[i] < 0) { 1723 throwException(new IllegalStateException( 1724 "Failure saving state: active " + mAdded.get(i) 1725 + " has cleared index: " + added[i])); 1726 } 1727 if (DEBUG) Log.v(TAG, "saveAllState: adding fragment #" + i 1728 + ": " + mAdded.get(i)); 1729 } 1730 } 1731 } 1732 1733 // Now save back stack. 1734 if (mBackStack != null) { 1735 N = mBackStack.size(); 1736 if (N > 0) { 1737 backStack = new BackStackState[N]; 1738 for (int i=0; i<N; i++) { 1739 backStack[i] = new BackStackState(this, mBackStack.get(i)); 1740 if (DEBUG) Log.v(TAG, "saveAllState: adding back stack #" + i 1741 + ": " + mBackStack.get(i)); 1742 } 1743 } 1744 } 1745 1746 FragmentManagerState fms = new FragmentManagerState(); 1747 fms.mActive = active; 1748 fms.mAdded = added; 1749 fms.mBackStack = backStack; 1750 return fms; 1751 } 1752 1753 void restoreAllState(Parcelable state, ArrayList<Fragment> nonConfig) { 1754 // If there is no saved state at all, then there can not be 1755 // any nonConfig fragments either, so that is that. 1756 if (state == null) return; 1757 FragmentManagerState fms = (FragmentManagerState)state; 1758 if (fms.mActive == null) return; 1759 1760 // First re-attach any non-config instances we are retaining back 1761 // to their saved state, so we don't try to instantiate them again. 1762 if (nonConfig != null) { 1763 for (int i=0; i<nonConfig.size(); i++) { 1764 Fragment f = nonConfig.get(i); 1765 if (DEBUG) Log.v(TAG, "restoreAllState: re-attaching retained " + f); 1766 FragmentState fs = fms.mActive[f.mIndex]; 1767 fs.mInstance = f; 1768 f.mSavedViewState = null; 1769 f.mBackStackNesting = 0; 1770 f.mInLayout = false; 1771 f.mAdded = false; 1772 f.mTarget = null; 1773 if (fs.mSavedFragmentState != null) { 1774 fs.mSavedFragmentState.setClassLoader(mActivity.getClassLoader()); 1775 f.mSavedViewState = fs.mSavedFragmentState.getSparseParcelableArray( 1776 FragmentManagerImpl.VIEW_STATE_TAG); 1777 } 1778 } 1779 } 1780 1781 // Build the full list of active fragments, instantiating them from 1782 // their saved state. 1783 mActive = new ArrayList<Fragment>(fms.mActive.length); 1784 if (mAvailIndices != null) { 1785 mAvailIndices.clear(); 1786 } 1787 for (int i=0; i<fms.mActive.length; i++) { 1788 FragmentState fs = fms.mActive[i]; 1789 if (fs != null) { 1790 Fragment f = fs.instantiate(mActivity, mParent); 1791 if (DEBUG) Log.v(TAG, "restoreAllState: active #" + i + ": " + f); 1792 mActive.add(f); 1793 // Now that the fragment is instantiated (or came from being 1794 // retained above), clear mInstance in case we end up re-restoring 1795 // from this FragmentState again. 1796 fs.mInstance = null; 1797 } else { 1798 mActive.add(null); 1799 if (mAvailIndices == null) { 1800 mAvailIndices = new ArrayList<Integer>(); 1801 } 1802 if (DEBUG) Log.v(TAG, "restoreAllState: avail #" + i); 1803 mAvailIndices.add(i); 1804 } 1805 } 1806 1807 // Update the target of all retained fragments. 1808 if (nonConfig != null) { 1809 for (int i=0; i<nonConfig.size(); i++) { 1810 Fragment f = nonConfig.get(i); 1811 if (f.mTargetIndex >= 0) { 1812 if (f.mTargetIndex < mActive.size()) { 1813 f.mTarget = mActive.get(f.mTargetIndex); 1814 } else { 1815 Log.w(TAG, "Re-attaching retained fragment " + f 1816 + " target no longer exists: " + f.mTargetIndex); 1817 f.mTarget = null; 1818 } 1819 } 1820 } 1821 } 1822 1823 // Build the list of currently added fragments. 1824 if (fms.mAdded != null) { 1825 mAdded = new ArrayList<Fragment>(fms.mAdded.length); 1826 for (int i=0; i<fms.mAdded.length; i++) { 1827 Fragment f = mActive.get(fms.mAdded[i]); 1828 if (f == null) { 1829 throwException(new IllegalStateException( 1830 "No instantiated fragment for index #" + fms.mAdded[i])); 1831 } 1832 f.mAdded = true; 1833 if (DEBUG) Log.v(TAG, "restoreAllState: added #" + i + ": " + f); 1834 if (mAdded.contains(f)) { 1835 throw new IllegalStateException("Already added!"); 1836 } 1837 mAdded.add(f); 1838 } 1839 } else { 1840 mAdded = null; 1841 } 1842 1843 // Build the back stack. 1844 if (fms.mBackStack != null) { 1845 mBackStack = new ArrayList<BackStackRecord>(fms.mBackStack.length); 1846 for (int i=0; i<fms.mBackStack.length; i++) { 1847 BackStackRecord bse = fms.mBackStack[i].instantiate(this); 1848 if (DEBUG) { 1849 Log.v(TAG, "restoreAllState: back stack #" + i 1850 + " (index " + bse.mIndex + "): " + bse); 1851 LogWriter logw = new LogWriter(TAG); 1852 PrintWriter pw = new PrintWriter(logw); 1853 bse.dump(" ", pw, false); 1854 } 1855 mBackStack.add(bse); 1856 if (bse.mIndex >= 0) { 1857 setBackStackIndex(bse.mIndex, bse); 1858 } 1859 } 1860 } else { 1861 mBackStack = null; 1862 } 1863 } 1864 1865 public void attachActivity(FragmentActivity activity, 1866 FragmentContainer container, Fragment parent) { 1867 if (mActivity != null) throw new IllegalStateException("Already attached"); 1868 mActivity = activity; 1869 mContainer = container; 1870 mParent = parent; 1871 } 1872 1873 public void noteStateNotSaved() { 1874 mStateSaved = false; 1875 } 1876 1877 public void dispatchCreate() { 1878 mStateSaved = false; 1879 moveToState(Fragment.CREATED, false); 1880 } 1881 1882 public void dispatchActivityCreated() { 1883 mStateSaved = false; 1884 moveToState(Fragment.ACTIVITY_CREATED, false); 1885 } 1886 1887 public void dispatchStart() { 1888 mStateSaved = false; 1889 moveToState(Fragment.STARTED, false); 1890 } 1891 1892 public void dispatchResume() { 1893 mStateSaved = false; 1894 moveToState(Fragment.RESUMED, false); 1895 } 1896 1897 public void dispatchPause() { 1898 moveToState(Fragment.STARTED, false); 1899 } 1900 1901 public void dispatchStop() { 1902 // See saveAllState() for the explanation of this. We do this for 1903 // all platform versions, to keep our behavior more consistent between 1904 // them. 1905 mStateSaved = true; 1906 1907 moveToState(Fragment.STOPPED, false); 1908 } 1909 1910 public void dispatchReallyStop() { 1911 moveToState(Fragment.ACTIVITY_CREATED, false); 1912 } 1913 1914 public void dispatchDestroyView() { 1915 moveToState(Fragment.CREATED, false); 1916 } 1917 1918 public void dispatchDestroy() { 1919 mDestroyed = true; 1920 execPendingActions(); 1921 moveToState(Fragment.INITIALIZING, false); 1922 mActivity = null; 1923 mContainer = null; 1924 mParent = null; 1925 } 1926 1927 public void dispatchConfigurationChanged(Configuration newConfig) { 1928 if (mAdded != null) { 1929 for (int i=0; i<mAdded.size(); i++) { 1930 Fragment f = mAdded.get(i); 1931 if (f != null) { 1932 f.performConfigurationChanged(newConfig); 1933 } 1934 } 1935 } 1936 } 1937 1938 public void dispatchLowMemory() { 1939 if (mAdded != null) { 1940 for (int i=0; i<mAdded.size(); i++) { 1941 Fragment f = mAdded.get(i); 1942 if (f != null) { 1943 f.performLowMemory(); 1944 } 1945 } 1946 } 1947 } 1948 1949 public boolean dispatchCreateOptionsMenu(Menu menu, MenuInflater inflater) { 1950 boolean show = false; 1951 ArrayList<Fragment> newMenus = null; 1952 if (mAdded != null) { 1953 for (int i=0; i<mAdded.size(); i++) { 1954 Fragment f = mAdded.get(i); 1955 if (f != null) { 1956 if (f.performCreateOptionsMenu(menu, inflater)) { 1957 show = true; 1958 if (newMenus == null) { 1959 newMenus = new ArrayList<Fragment>(); 1960 } 1961 newMenus.add(f); 1962 } 1963 } 1964 } 1965 } 1966 1967 if (mCreatedMenus != null) { 1968 for (int i=0; i<mCreatedMenus.size(); i++) { 1969 Fragment f = mCreatedMenus.get(i); 1970 if (newMenus == null || !newMenus.contains(f)) { 1971 f.onDestroyOptionsMenu(); 1972 } 1973 } 1974 } 1975 1976 mCreatedMenus = newMenus; 1977 1978 return show; 1979 } 1980 1981 public boolean dispatchPrepareOptionsMenu(Menu menu) { 1982 boolean show = false; 1983 if (mAdded != null) { 1984 for (int i=0; i<mAdded.size(); i++) { 1985 Fragment f = mAdded.get(i); 1986 if (f != null) { 1987 if (f.performPrepareOptionsMenu(menu)) { 1988 show = true; 1989 } 1990 } 1991 } 1992 } 1993 return show; 1994 } 1995 1996 public boolean dispatchOptionsItemSelected(MenuItem item) { 1997 if (mAdded != null) { 1998 for (int i=0; i<mAdded.size(); i++) { 1999 Fragment f = mAdded.get(i); 2000 if (f != null) { 2001 if (f.performOptionsItemSelected(item)) { 2002 return true; 2003 } 2004 } 2005 } 2006 } 2007 return false; 2008 } 2009 2010 public boolean dispatchContextItemSelected(MenuItem item) { 2011 if (mAdded != null) { 2012 for (int i=0; i<mAdded.size(); i++) { 2013 Fragment f = mAdded.get(i); 2014 if (f != null) { 2015 if (f.performContextItemSelected(item)) { 2016 return true; 2017 } 2018 } 2019 } 2020 } 2021 return false; 2022 } 2023 2024 public void dispatchOptionsMenuClosed(Menu menu) { 2025 if (mAdded != null) { 2026 for (int i=0; i<mAdded.size(); i++) { 2027 Fragment f = mAdded.get(i); 2028 if (f != null) { 2029 f.performOptionsMenuClosed(menu); 2030 } 2031 } 2032 } 2033 } 2034 2035 public static int reverseTransit(int transit) { 2036 int rev = 0; 2037 switch (transit) { 2038 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2039 rev = FragmentTransaction.TRANSIT_FRAGMENT_CLOSE; 2040 break; 2041 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2042 rev = FragmentTransaction.TRANSIT_FRAGMENT_OPEN; 2043 break; 2044 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2045 rev = FragmentTransaction.TRANSIT_FRAGMENT_FADE; 2046 break; 2047 } 2048 return rev; 2049 2050 } 2051 2052 public static final int ANIM_STYLE_OPEN_ENTER = 1; 2053 public static final int ANIM_STYLE_OPEN_EXIT = 2; 2054 public static final int ANIM_STYLE_CLOSE_ENTER = 3; 2055 public static final int ANIM_STYLE_CLOSE_EXIT = 4; 2056 public static final int ANIM_STYLE_FADE_ENTER = 5; 2057 public static final int ANIM_STYLE_FADE_EXIT = 6; 2058 2059 public static int transitToStyleIndex(int transit, boolean enter) { 2060 int animAttr = -1; 2061 switch (transit) { 2062 case FragmentTransaction.TRANSIT_FRAGMENT_OPEN: 2063 animAttr = enter ? ANIM_STYLE_OPEN_ENTER : ANIM_STYLE_OPEN_EXIT; 2064 break; 2065 case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE: 2066 animAttr = enter ? ANIM_STYLE_CLOSE_ENTER : ANIM_STYLE_CLOSE_EXIT; 2067 break; 2068 case FragmentTransaction.TRANSIT_FRAGMENT_FADE: 2069 animAttr = enter ? ANIM_STYLE_FADE_ENTER : ANIM_STYLE_FADE_EXIT; 2070 break; 2071 } 2072 return animAttr; 2073 } 2074} 2075