行业知识
Android 14 transtion 动画流程
2026-11-09 06:23:09
来源：互联网转载
1.接口
shell入口通过TransitionPlayerImpl与wm cindex.php/tags-1038.html" >ore 通信
@BinderThread private class TransitionPlayerImpl extends ITransitionPlayer.Stub { @Override public void onTransitionReady(IBinder iBinder, TransitionInfo transitionInfo, SurfaceControl.Transaction t, SurfaceControl.Transaction finishT) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.onTransitionReady( iBinder, transitionInfo, t, finishT)); } @Override public void requestStartTransition(IBinder iBinder, TransitionRequestInfo request) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.requestStartTransition(iBinder, request)); } }} 分为1. requestStartTransition2.onTransitionReady两个阶段1.requestStartTransitionwm servicesnew 一个动画放进mActiveSyncs中04-23 18:43:25.195 2077 4588 D jinyanmeiainima: BLASTSyncEngine startSyncSet s.mSyncId:604-23 18:43:25.195 2077 4588 D jinyanmeiainima: BLASTSyncEngine startSyncSet s:com.android.server.wm.BLASTSyncEngine$SyncGroup@3ee853104-23 18:43:25.195 2077 4588 D jinyanmeiainima: BLASTSyncEngine startSyncSet mActiveSyncs++++:004-23 18:43:25.196 2077 4588 D jinyanmeiainima: BLASTSyncEngine startSyncSet mActiveSyncs---:104-23 18:43:25.196 2077 4588 D jinyanmeiainima: java.lang.RuntimeException: jinyanmeiainima04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine.startSyncSet(BLASTSyncEngine.java:327)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine.startSyncSet(BLASTSyncEngine.java:305)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.Transition.startCollecting(Transition.java:422)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.TransitionController.moveToCollecting(TransitionController.java:222)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.TransitionController.moveToCollecting(TransitionController.java:203)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.TransitionController.createTransition(TransitionController.java:197)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.TransitionController.createTransition(TransitionController.java:179)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskSupervisor.findTaskToMoveToFront(ActivityTaskSupervisor.java:1577)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.moveTaskToFrontLocked(ActivityTaskManagerService.java:2497)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskSupervisor.startActivityFromRecents(ActivityTaskSupervisor.java:3034)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.startActivityFromRecents(ActivityTaskManagerService.java:1918)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at android.app.IActivityTaskManager$Stub.onTransact(IActivityTaskManager.java:1434)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.onTransact(ActivityTaskManagerService.java:5840)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at android.os.Binder.execTransactInternal(Binder.java:1348)04-23 18:43:25.196 2077 4588 D jinyanmeiainima: at android.os.Binder.execTransact(Binder.java:1279)new出来后调用task.mTransitionController.collect(task);04-24 16:06:47.682 1815 2160 D jinyanmeiani: ChangeInfo 111111111 this:Task{fa5361 #69 type=standard A=10143:comgallery.home}04-24 16:06:47.682 1815 2160 D jinyanmeiani: ChangeInfo 111111111 mVisible:true04-24 16:06:47.682 1815 2160 D jinyanmeiani: ChangeInfo 111111111 mWindowingMode:504-24 16:06:47.682 1815 2160 D jinyanmeiani: java.lang.RuntimeException: jinyanmeiani04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.Transition$ChangeInfo.(Transition.java:2258)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.Transition.collect(Transition.java:492)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.TransitionController.collect(TransitionController.java:568)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.ActivityTaskSupervisor.findTaskToMoveToFront(ActivityTaskSupervisor.java:1529)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.ActivityTaskManagerService.moveTaskToFrontLocked(ActivityTaskManagerService.java:2464)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.ActivityTaskSupervisor.startActivityFromRecents(ActivityTaskSupervisor.java:2901)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.ActivityTaskManagerService.startActivityFromRecents(ActivityTaskManagerService.java:1931)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at android.app.IActivityTaskManager$Stub.onTransact(IActivityTaskManager.java:1430)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at com.android.server.wm.ActivityTaskManagerService.onTransact(ActivityTaskManagerService.java:5786)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at android.os.Binder.execTransactInternal(Binder.java:1348)04-24 16:06:47.682 1815 2160 D jinyanmeiani: at android.os.Binder.execTransact(Binder.java:1279) /** @see Transition#collect */void collect(@NonNull WindowContainer wc) { if (mCollectingTransition == null) return; mCollectingTransition.collect(wc);} 计算所有的到mChanges
根据WindowContainer new 一个ChangeInfo
ChangeInfo(@NonNull WindowContainer origState) { mContainer = origState; mVisible = origState.isVisibleRequested(); mWindowingMode = origState.getWindowingMode(); mAbsoluteBounds.set(origState.getBounds()); mShowWallpaper = origState.showWallpaper(); mRotation = origState.getWindowConfiguration().getRotation(); mStartParent = origState.getParent();} 把changeinfo放入mChanges
mChanges是一个map
key：WindowContainer
value：由key：WindowContainer构成的ChangeInfo
此列表在开始做动画时候会判断里面的key，value是否满足做动画的条件
void collect(@NonNull WindowContainer wc) { if (mState 把new出来的动画申请开始动画requestStartTransition04-23 18:43:25.211 2077 4588 D jinyanmeiainima: requestStartTransition displayChange:04-23 18:43:25.211 2077 4588 D jinyanmeiainima: java.lang.RuntimeException: jinyanmeiainima04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.TransitionController.requestStartTransition(TransitionController.java:548)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskSupervisor.findTaskToMoveToFront(ActivityTaskSupervisor.java:1622)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.moveTaskToFrontLocked(ActivityTaskManagerService.java:2497)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskSupervisor.startActivityFromRecents(ActivityTaskSupervisor.java:3034)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.startActivityFromRecents(ActivityTaskManagerService.java:1918)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at android.app.IActivityTaskManager$Stub.onTransact(IActivityTaskManager.java:1434)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at com.android.server.wm.ActivityTaskManagerService.onTransact(ActivityTaskManagerService.java:5840)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at android.os.Binder.execTransactInternal(Binder.java:1348)04-23 18:43:25.211 2077 4588 D jinyanmeiainima: at android.os.Binder.execTransact(Binder.java:1279)
Transition requestStartTransition(@NonNull Transition transition, @Nullable Task startTask, @Nullable RemoteTransition remoteTransition, @Nullable TransitionRequestInfo.DisplayChange displayChange) { Slog.d("jinyanmeiainima","requestStartTransition transition:" + transition ); Slog.d("jinyanmeiainima","requestStartTransition startTask:" + startTask ); Slog.d("jinyanmeiainima","requestStartTransition remoteTransition:" + remoteTransition ); Slog.d("jinyanmeiainima","requestStartTransition displayChange:" + displayChange ); if (mIsWaitingForDisplayEnabled) { ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, "Disabling player for transition" + " #%d because display isn't enabled yet", transition.getSyncId()); transition.mIsPlayerEnabled = false; transition.mLogger.mRequestTimeNs = SystemClock.uptimeNanos(); mAtm.mH.post(() -> mAtm.mWindowOrganizerController.startTransition( transition.getToken(), null)); return transition; } if (mTransitionPlayer == null || transition.isAborted()) { // Apparently, some tests will kill(and restart) systemui, so there is a chance that // the player might be transiently null. if (transition.isCollecting()) { transition.abort(); } return transition; } try { ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, "Requesting StartTransition: %s", transition); ActivityManager.RunningTaskInfo info = null; if (startTask != null) { info = new ActivityManager.RunningTaskInfo(); startTask.fillTaskInfo(info); } final TransitionRequestInfo request = new TransitionRequestInfo( transition.mType, info, remoteTransition, displayChange); transition.mLogger.mRequestTimeNs = SystemClock.elapsedRealtimeNanos(); transition.mLogger.mRequest = request; Slog.d("jinyanmeiainima","requestStartTransition transition.getToken():" + transition.getToken() ); Slog.d("jinyanmeiainima","requestStartTransition request:" + request); Slog.d("jinyanmeiainima","requestStartTransition displayChange:" , new RuntimeException("jinyanmeiainima") ); mTransitionPlayer.requestStartTransition(transition.getToken(), request); transition.setRemoteTransition(remoteTransition); } catch (RemoteException e) { Slog.e(TAG, "Error requesting transition", e); transition.start(); } return transition;} 转到shell：
Transition requestStartTransition(@NonNull Transition transition, @Nullable Task startTask,
requestStartTransition mTransitionPlayer.requestStartTransition(transition.getToken(), request); transition.setRemoteTransition(remoteTransition);
shell
@BinderThread private class TransitionPlayerImpl extends ITransitionPlayer.Stub { @Override public void onTransitionReady(IBinder iBinder, TransitionInfo transitionInfo, SurfaceControl.Transaction t, SurfaceControl.Transaction finishT) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.onTransitionReady( iBinder, transitionInfo, t, finishT)); } @Override public void requestStartTransition(IBinder iBinder, TransitionRequestInfo request) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.requestStartTransition(iBinder, request)); } }} void requestStartTransition(@NonNull IBinder transitionToken, @Nullable TransitionRequestInfo request) { ProtoLog.v(ShellProtoLogGroup.WM_SHELL_TRANSITIONS, "Transition requested: %s %s", transitionToken, request); if (isTransitionKnown(transitionToken)) { throw new RuntimeException("Transition already started " + transitionToken); } final ActiveTransition active = new ActiveTransition(); WindowContainerTransaction wct = null; // If we have sleep, we use a special handler and we try to finish everything ASAP. if (request.getType() == TRANSIT_SLEEP) { mSleepHandler.handleRequest(transitionToken, request); active.mHandler = mSleepHandler; } else { for (int i = mHandlers.size() - 1; i >= 0; --i) { wct = mHandlers.get(i).handleRequest(transitionToken, request); if (wct != null) { active.mHandler = mHandlers.get(i); break; } } if (request.getDisplayChange() != null) { TransitionRequestInfo.DisplayChange change = request.getDisplayChange(); if (change.getEndRotation() != change.getStartRotation()) { // Is a rotation, so dispatch to all displayChange listeners if (wct == null) { wct = new WindowContainerTransaction(); } mDisplayController.getChangeController().dispatchOnDisplayChange(wct, change.getDisplayId(), change.getStartRotation(), change.getEndRotation(), null /* newDisplayAreaInfo */); } } } mOrganizer.startTransition(transitionToken, wct != null && wct.isEmpty() ? null : wct); active.mToken = transitionToken; // Currently, WMCore only does one transition at a time. If it makes a requestStart, it // is already collecting that transition on core-side, so it will be the next one to // become ready. There may already be pending transitions added as part of direct // `startNewTransition` but if we have a request now, it means WM created the request // transition before it acknowledged any of the pending `startNew` transitions. So, insert // it at the front. mPendingTransitions.add(0, active); // 添加到mPendingTransitions} private static final class ActiveTransition { IBinder mToken; TransitionHandler mHandler; boolean mAborted; TransitionInfo mInfo; SurfaceControl.Transaction mStartT; SurfaceControl.Transaction mFinishT; /** Ordered list of transitions which have been merged into this one. */ private ArrayList mMerged;} 转到wm core04-23 18:43:22.342 2980 3221 D jinyanmeiainima: WindowOrganizer transitionToken transitionToken:android.os.BinderProxy@3268f304-23 18:43:22.343 2980 3221 D jinyanmeiainima: WindowOrganizer startTransition t:null04-23 18:43:22.343 2980 3221 D jinyanmeiainima: java.lang.RuntimeException: jinyanmeiainima04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.window.WindowOrganizer.startTransition(WindowOrganizer.java:112)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions.requestStartTransition(Transitions.java:891)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl.lambda$requestStartTransition(Transitions.java:1129)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl.$r8$lambda$FkH1M0vUh3zDx8R5iMruInPEXLI(Unknown Source:0)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl$$ExternalSyntheticLambda1.run(Unknown Source:6)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.os.Handler.handleCallback(Handler.java:958)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.os.Handler.dispatchMessage(Handler.java:99)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.os.Looper.loopOnce(Looper.java:216)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.os.Looper.loop(Looper.java:305)04-23 18:43:22.343 2980 3221 D jinyanmeiainima: at android.os.HandlerThread.run(HandlerThread.java:67)
WindowOrganizer.java@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS) public void startTransition(@NonNull IBinder transitionToken, @Nullable WindowContainerTransaction t) { try { getWindowOrganizerController().startTransition(transitionToken, t); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } 转到 wm servicesWindowOrganizerController
WindowOrganizerController.java private IBinder startTransition(@WindowManager.TransitionType int type, @Nullable IBinder transitionToken, @Nullable WindowContainerTransaction t) { enforceTaskPermission("startTransition()"); final CallerInfo caller = new CallerInfo(); final long ident = Binder.clearCallingIdentity(); try { synchronized (mGlobalLock) { Transition transition = Transition.fromBinder(transitionToken); if (mTransitionController.getTransitionPlayer() == null && transition == null) { Slog.w(TAG, "Using shell transitions API for legacy transitions."); if (t == null) { throw new IllegalArgumentException("Can't use legacy transitions in" + " compatibility mode with no WCT."); } applyTransaction(t, -1 /* syncId */, null, caller); return null; } // In cases where transition is already provided, the "readiness lifecycle" of the // transition is determined outside of this transaction. However, if this is a // direct call from shell, the entire transition lifecycle is contained in the // provided transaction and thus we can setReady immediately after apply. final boolean needsSetReady = transition == null && t != null; final WindowContainerTransaction wct = t != null ? t : new WindowContainerTransaction(); if (transition == null) { if (type mTransitionController.moveToCollecting(nextTransition), () -> { nextTransition.start(); applyTransaction(wct, -1 /*syncId*/, nextTransition, caller); if (needsSetReady) { nextTransition.setAllReady(); } }); return nextTransition.getToken(); } transition = mTransitionController.createTransition(type); } if (!transition.isCollecting() && !transition.isForcePlaying()) { Slog.e(TAG, "Trying to start a transition that isn't collecting. This probably" + " means Shell took too long to respond to a request. WM State may be" + " incorrect now, please file a bug"); applyTransaction(wct, -1 /*syncId*/, null /*transition*/, caller); return transition.getToken(); } transition.start(); /到这里 transition.mLogger.mStartWCT = wct; applyTransaction(wct, -1 /*syncId*/, transition, caller); if (needsSetReady) { transition.setAllReady(); } return transition.getToken(); } } finally { Binder.restoreCallingIdentity(ident); } } 04-23 18:44:02.186 2107 2323 D jinyanmeiainima: BLASTSyncEngine setReady ready:true
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: java.lang.RuntimeException: setReady
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine$SyncGroup.setReady(BLASTSyncEngine.java:240)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine$SyncGroup.-$$Nest$msetReady(Unknown Source:0)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine.setReady(BLASTSyncEngine.java:356)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.Transition.applyReady(Transition.java:657)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.Transition.start(Transition.java:446)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.WindowOrganizerController.startTransition(WindowOrganizerController.java:335)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.WindowOrganizerController.startTransition(WindowOrganizerController.java:267)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at android.window.IWindowOrganizerController$Stub.onTransact(IWindowOrganizerController.java:264)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at com.android.server.wm.WindowOrganizerController.onTransact(WindowOrganizerController.java:185)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at android.os.Binder.execTransactInternal(Binder.java:1343)
04-23 18:44:02.186 2107 2323 D jinyanmeiainima: at android.os.Binder.execTransact(Binder.java:1279)
然后调用到BLASTSyncEngine setReady 将动画状态置为ready
开始刷新
BLASTSyncEngine.java private void setReady(boolean ready) { if (mReady == ready) { return; } Slog.d("jinyanmeiainima","BLASTSyncEngine setReady ready:" + ready, new RuntimeException("setReady")); ProtoLog.v(WM_DEBUG_SYNC_ENGINE, "SyncGroup %d: Set ready", mSyncId); mReady = ready; if (!ready) return; mWm.mWindowPlacerLocked.requestTraversal(); } private static final class ActiveTransition { IBinder mToken; TransitionHandler mHandler; boolean mAborted; TransitionInfo mInfo; SurfaceControl.Transaction mStartT; SurfaceControl.Transaction mFinishT; /** Ordered list of transitions which have been merged into this one. */ private ArrayList mMerged;} onTransactionReady阶段
2.1 数据准备，筛选要做动画的对象
刷新时调用到 wm services. onTransactionReady
04-23 18:43:22.529 2073 2100 D jinyanmeiainima: Transition onTransactionReady mToken:Token{a674b32 TransitionRecord{d9c7094 id=6 type=TO_FRONT flags=0}}04-23 18:43:22.529 2073 2100 D jinyanmeiainima: Transition onTransactionReady info:{t=TO_FRONT f=0x0 ro=Point(0, 0) c=[{WCT{RemoteToken{2a5ead1 Task{c299c5e #39 type=standard A=10245:com..notes}}} m=SHOW f=TRANSLUCENT leash=Surface(name=Task=39)/@0x2c4c3d4 sb=Rect(0, 0 - 1800, 2880) eb=Rect(799, 141 - 1759, 1848) eo=Point(799, 141)}]}04-23 18:43:22.529 2073 2100 D jinyanmeiainima: Transition onTransactionReady transaction:android.view.SurfaceControl$Transaction@65dbba04-23 18:43:22.529 2073 2100 D jinyanmeiainima: Transition onTransactionReady mFinishTransaction:android.view.SurfaceControl$Transaction@2d6a6b04-23 18:43:22.529 2073 2100 D jinyanmeiainima: java.lang.RuntimeException: jinyanmeiainima04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.Transition.onTransactionReady(Transition.java:1215)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine$SyncGroup.finishNow(BLASTSyncEngine.java:206) //这里会从队列移除04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine$SyncGroup.onSurfacePlacement(BLASTSyncEngine.java:148)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine$SyncGroup.-$$Nest$monSurfacePlacement(Unknown Source:0)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.BLASTSyncEngine.onSurfacePlacement(BLASTSyncEngine.java:382)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.RootWindowContainer.performSurfacePlacementNoTrace(RootWindowContainer.java:893)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.RootWindowContainer.performSurfacePlacement(RootWindowContainer.java:836)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.WindowSurfacePlacer.performSurfacePlacementLoop(WindowSurfacePlacer.java:200)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.WindowSurfacePlacer.performSurfacePlacement(WindowSurfacePlacer.java:149)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.WindowSurfacePlacer.performSurfacePlacement(WindowSurfacePlacer.java:138)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.wm.WindowSurfacePlacer$Traverser.run(WindowSurfacePlacer.java:80)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at android.os.Handler.handleCallback(Handler.java:958)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at android.os.Handler.dispatchMessage(Handler.java:99)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at android.os.Looper.loopOnce(Looper.java:216)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at android.os.Looper.loop(Looper.java:305)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at android.os.HandlerThread.run(HandlerThread.java:67)04-23 18:43:22.529 2073 2100 D jinyanmeiainima: at com.android.server.ServiceThread.run(ServiceThread.java:46) BLASTSyncEngine.javaprivate void finishNow() { mActiveSyncs.remove(mSyncId); //从队列移除 } Transition.onTransactionReady
mTargets = calculateTargets(mParticipants, mChanges); //计算mTargets
根据target 计算info
final TransitionInfo info = calculateTransitionInfo(mType, mFlags, mTargets, transaction);
Transition.javapublic void onTransactionReady(int syncId, SurfaceControl.Transaction transaction) { final ArrayMap mChanges = new ArrayMap(); //这里的mChanges 也是一个map mTargets = calculateTargets(mParticipants, mChanges); final TransitionInfo info = calculateTransitionInfo(mType, mFlags, mTargets, transaction); mController.getTransitionPlayer().onTransitionReady( mToken, info, transaction, mFinishTransaction); if (Trace.isTagEnabled(TRACE_TAG_WINDOW_MANAGER)) { Trace.asyncTraceBegin(TRACE_TAG_WINDOW_MANAGER, TRACE_NAME_PLAY_TRANSITION, } wm.services.Transition.calculateTargets
两个条件不添加动画：
1：!wc.isAttached()
2：!changeInfo.hasChanged()
将符合条件的changeInfo添加到targets 返回
@VisibleForTesting@NonNullstatic ArrayList calculateTargets(ArraySet participants, ArrayMap changes) { ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, "Start calculating TransitionInfo based on participants: %s", participants); // Add all valid participants to the target container. final Targets targets = new Targets(); for (int i = participants.size() - 1; i >= 0; --i) { final WindowContainer wc = participants.valueAt(i); if (!wc.isAttached()) { ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, " Rejecting as detached: %s", wc); continue; } // The level of transition target should be at least window token. if (wc.asWindowState() != null) continue; final ChangeInfo changeInfo = changes.get(wc); // changes即mChanges，由onTransitionReady时添加到changes 的map //这里的changeInfo 与TransitionInfo不是一个 // Reject no-ops if (!changeInfo.hasChanged()) { ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, " Rejecting as no-op: %s", wc); continue; } targets.add(changeInfo); } ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, " Initial targets: %s", targets.mArray); // Combine the targets from bottom to top if possible. tryPromote(targets, changes); // Establish the relationship between the targets and their top changes. populateParentChanges(targets, changes); final ArrayList targetList = targets.getListSortedByZ(); ProtoLog.v(ProtoLogGroup.WM_DEBUG_WINDOW_TRANSITIONS, " Final targets: %s", targetList); return targetList;} boolean hasChanged() { // the task including transient launch must promote to root task if ((mFlags & ChangeInfo.FLAG_TRANSIENT_LAUNCH) != 0 || (mFlags & ChangeInfo.FLAG_ABOVE_TRANSIENT_LAUNCH) != 0) { return true; } // If it's invisible and hasn't changed visibility, always return false since even if // something changed, it wouldn't be a visible change. final boolean currVisible = mContainer.isVisibleRequested(); if (currVisible == mVisible && !mVisible) return false; return currVisible != mVisible || mKnownConfigChanges != 0 // if mWindowingMode is 0, this container wasn't attached at collect time, so // assume no change in windowing-mode. || (mWindowingMode != 0 && mContainer.getWindowingMode() != mWindowingMode) || !mContainer.getBounds().equals(mAbsoluteBounds) || mRotation != mContainer.getWindowConfiguration().getRotation(); } 根据上步计算出来的sortedTargets计算要做的动画TransitionInfo
TransitionInfo中有个mChanges
public final class TransitionInfo implements Parcelable { /** * Modes are only a sub-set of all the transit-types since they are per-container * @hide */ @IntDef(prefix = { "TRANSIT_" }, value = { TRANSIT_NONE, TRANSIT_OPEN, TRANSIT_CLOSE, // Note: to_front/to_back really mean show/hide respectively at the container level. TRANSIT_TO_FRONT, TRANSIT_TO_BACK, TRANSIT_CHANGE }) public @interface TransitionMode {} private final ArrayList mChanges = new ArrayList(); public static final class Change implements Parcelable { private final WindowContainerToken mContainer; private WindowContainerToken mParent; private WindowContainerToken mLastParent; private final SurfaceControl mLeash; private @TransitionMode int mMode = TRANSIT_NONE; private @ChangeFlags int mFlags = FLAG_NONE; private final Rect mStartAbsBounds = new Rect(); private final Rect mEndAbsBounds = new Rect(); private final Point mEndRelOffset = new Point(); private ActivityManager.RunningTaskInfo mTaskInfo = null; private boolean mAllowEnterPip; private @Surface.Rotation int mStartRotation = ROTATION_UNDEFINED; private @Surface.Rotation int mEndRotation = ROTATION_UNDEFINED; /** * The end rotation of the top activity after fixed rotation is finished. If the top * activity is not in fixed rotation, it will be {@link ROTATION_UNDEFINED}. */ private @Surface.Rotation int mEndFixedRotation = ROTATION_UNDEFINED; private int mRotationAnimation = ROTATION_ANIMATION_UNSPECIFIED; private @ColorInt int mBackgroundColor; private SurfaceControl mSnapshot = null; private float mSnapshotLuma; static TransitionInfo calculateTransitionInfo(@TransitionType int type, int flags, ArrayList sortedTargets, @Nullable SurfaceControl.Transaction startT) { final TransitionInfo out = new TransitionInfo(type, flags); //根据type 和flags 构建新的TransitionInfo 对象 WindowContainer topApp = null; for (int i = 0; i 2.2 开始动画
到shell.onTransitionReady
@BinderThreadprivate class TransitionPlayerImpl extends ITransitionPlayer.Stub { @Override public void onTransitionReady(IBinder iBinder, TransitionInfo transitionInfo, SurfaceControl.Transaction t, SurfaceControl.Transaction finishT) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.onTransitionReady( iBinder, transitionInfo, t, finishT)); } @Override public void requestStartTransition(IBinder iBinder, TransitionRequestInfo request) throws RemoteException { mMainExecutor.execute(() -> Transitions.this.requestStartTransition(iBinder, request)); }} void onTransitionReady(@NonNull IBinder transitionToken, @NonNull TransitionInfo info, @NonNull SurfaceControl.Transaction t, @NonNull SurfaceControl.Transaction finishT) { ProtoLog.v(ShellProtoLogGroup.WM_SHELL_TRANSITIONS, "onTransitionReady %s: %s", transitionToken, info); final int activeIdx = findByToken(mPendingTransitions, transitionToken); if (activeIdx activeTransition.mToken).toArray())); } if (activeIdx > 0) { Log.e(TAG, "Transition became ready out-of-order " + transitionToken + ". Expected" + " order: " + Arrays.toString(mPendingTransitions.stream().map( activeTransition -> activeTransition.mToken).toArray())); } // Move from pending to ready final ActiveTransition active = mPendingTransitions.remove(activeIdx);//从 mPendingTransitions 移除 mReadyTransitions.add(active); //添加至 mReadyTransitions active.mInfo = info; active.mStartT = t; active.mFinishT = finishT; for (int i = 0; i 0) { if (!info.getRootLeash().isValid()) { // Shell has some debug settings which makes calling binders with invalid // surfaces crash, so replace it with a "real" one. info.setRootLeash(new SurfaceControl.Builder().setName("Invalid") .setContainerLayer().build(), 0, 0); } // Sleep starts a process of forcing all prior transitions to finish immediately finishForSleep(null /* forceFinish */); return; } } // Allow to notify keyguard un-occluding state to KeyguardService, which can happen while // screen-off, so there might no visibility change involved. if (!info.getRootLeash().isValid() && info.getType() != TRANSIT_KEYGUARD_UNOCCLUDE) { // Invalid root-leash implies that the transition is empty/no-op, so just do // housekeeping and return. ProtoLog.v(ShellProtoLogGroup.WM_SHELL_TRANSITIONS, "Invalid root leash (%s): %s", transitionToken, info); onAbort(active); return; } final int changeSize = info.getChanges().size(); //找到带有change的info boolean taskChange = false; boolean transferStartingWindow = false; boolean allOccluded = changeSize > 0; for (int i = changeSize - 1; i >= 0; --i) { final TransitionInfo.Change change = info.getChanges().get(i); taskChange |= change.getTaskInfo() != null; transferStartingWindow |= change.hasFlags(FLAG_STARTING_WINDOW_TRANSFER_RECIPIENT); if (!change.hasFlags(FLAG_IS_OCCLUDED)) { allOccluded = false; } } // There does not need animation when: // A. Transfer starting window. Apply transfer starting window directly if there is no other // task change. Since this is an activity->activity situation, we can detect it by selecting // transitions with only 2 changes where neither are tasks and one is a starting-window // recipient. if (!taskChange && transferStartingWindow && changeSize == 2 // B. It's visibility change if the TRANSIT_TO_BACK/TO_FRONT happened when all // changes are underneath another change. || ((info.getType() == TRANSIT_TO_BACK || info.getType() == TRANSIT_TO_FRONT) && allOccluded)) { // Treat this as an abort since we are bypassing any merge logic and effectively // finishing immediately. onAbort(active); return; } setupStartState(active.mInfo, active.mStartT, active.mFinishT); //开始置状态 if (mReadyTransitions.size() > 1) { // There are already transitions waiting in the queue, so just return. return; } processReadyQueue(); //开始动画 } 04-23 18:44:02.339 2107 2246 D jinyanmeiainima: BLASTSyncEngine finishNow s.mSyncId:504-23 18:44:02.339 2107 2246 D jinyanmeiainima: BLASTSyncEngine finishNow mActiveSyncs++++:104-23 18:44:02.339 2107 2246 D jinyanmeiainima: BLASTSyncEngine finishNow s.mSyncId:504-23 18:44:02.339 2107 2246 D jinyanmeiainima: BLASTSyncEngine finishNow mActiveSyncs++++:004-23 18:44:02.347 3002 3197 D jinyanmeiainima: startAnimation TRANSIT_CHANGE:04-23 18:44:02.347 3002 3197 D jinyanmeiainima: java.lang.RuntimeException: jinyanmeiainima04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions.dispatchTransition(Transitions.java:708)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions.playTransition(Transitions.java:693)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions.processReadyQueue(Transitions.java:627)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions.onTransitionReady(Transitions.java:600)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl.lambda$onTransitionReadyimplements Transitions.TransitionHandler 的对象都会调用到startAnimation
(Transitions.java:1122)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl.$r8$lambda$qsRfWn1ItrZqnFeABBdxU50jPc4(Unknown Source:0)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at com.android.wm.shell.transition.Transitions$TransitionPlayerImpl$$ExternalSyntheticLambda0.run(Unknown Source:10)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at android.os.Handler.handleCallback(Handler.java:958)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at android.os.Handler.dispatchMessage(Handler.java:99)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at android.os.Looper.loopOnce(Looper.java:216)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at android.os.Looper.loop(Looper.java:305)04-23 18:44:02.347 3002 3197 D jinyanmeiainima: at android.os.HandlerThread.run(HandlerThread.java:67)
然后各个继承于
走各个业务动画逻辑
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