O 上新增 TaskSnapshot

任务快照

1、亮屏会设置可见activity 

06-04 08:07:15.443   746  1109 V WindowManager: setVisibility isFingerprintUnlock=false
06-04 08:07:15.444   746  1109 V WindowManager: setAppVisibility..mOpeningApps.add. 222 in visible
06-04 08:07:15.444   746  1109 V WindowManager: Set focused app to: AppWindowToken{912fb3f token=Token{c183c99 ActivityRecord{a3901e0 u0 com.itel.notepad/com.itel.controller.NoteCreateActivity t80}
06-04 08:07:15.447   746  1109 V WindowManager: prepare shutdown, then allowRotate = true
06-04 08:07:15.448   746  1109 V WindowManager: setVisibility isFingerprintUnlock=false

06-04 08:07:15.448   746  1109 V WindowManager: setAppVisibility..mOpeningApps.add. 222 in visible

2、创建 TaskSnapshot 时堆栈

06-04 08:07:15.454   746  1109 D at com.android.server.wm.AppWindowContainerController.scheduleAddStartingWindow(AppWindowContainerController.java:642)
06-04 08:07:15.454   746  1109 D at com.android.server.wm.AppWindowContainerController.createSnapshot(AppWindowContainerController.java:655)
06-04 08:07:15.454   746  1109 D at com.android.server.wm.AppWindowContainerController.addStartingWindow(AppWindowContainerController.java:546)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityRecord.showStartingWindow(ActivityRecord.java:2196)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityRecord.showStartingWindow(ActivityRecord.java:2181)
06-04 08:07:15.454   746  1109 D at com.android.server.am.TaskRecord.addStartingWindowsForVisibleActivities(TaskRecord.java:2266)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityStack.addStartingWindowsForVisibleActivities(ActivityStack.java:1967)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityStackSupervisor.addStartingWindowsForVisibleActivities(ActivityStackSupervisor.java:3401)
06-04 08:07:15.454   746  1109 D at com.android.server.am.KeyguardController.keyguardGoingAway(KeyguardController.java:140)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityManagerService.keyguardGoingAway(ActivityManagerService.java:7887)
06-04 08:07:15.454   746  1109 D at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:3397)
06-04 08:07:15.454   746  1109 D at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3251)
06-04 08:07:15.454   746  1109 D at android.os.Binder.execTransact(Binder.java:697)

06-04 08:07:15.454   746  1109 V WindowManager: Enqueueing ADD_STARTING

mService.mAnimationHandler.postAtFrontOfQueue(mAddStartingWindow);  

private final Runnable mAddStartingWindow = () -> {  

这个是在动画handler 中处理

WindowManager: Enqueueing ADD_STARTING    //发送处理添加TaskSnapshot  的runnable 

WindowManager: Add starting AppWindowContai        //执行runnable

3、windowmanagerservice.java 

WindowManager: addWindow: AppWindowToken{912fb3f token=Token{c183c99 ActivityRecord{a3901e0 u0 com.itel.notepad/com.itel.controller.NoteCreateActivity t80}}} startingWindow=Window{227eb6f u0 SnapshotStartingWindow for taskId=80}

public int addWindow(Session session, IWindow client, int seq,
        WindowManager.LayoutParams attrs, int viewVisibility, int displayId,
        Rect outContentInsets, Rect outStableInsets, Rect outOutsets,
        InputChannel outInputChannel) {  

final AppWindowToken aToken = token.asAppWindowToken();
if (type == TYPE_APPLICATION_STARTING && aToken != null) {
    aToken.startingWindow = win;
    if (DEBUG_STARTING_WINDOW) Slog.v (TAG_WM, "addWindow: " + aToken
            + " startingWindow=" + win);
}  

这里添加启动窗口，类型是 TYPE_APPLICATION_STARTING类型

4、

final int drawState = mWinAnimator.mDrawState;
if ((drawState == HAS_DRAWN || drawState == READY_TO_SHOW)
        && mAttrs.type != TYPE_APPLICATION_STARTING && mAppToken != null) {
    mAppToken.onFirstWindowDrawn(this, mWinAnimator);
}
  

void onFirstWindowDrawn(WindowState win, WindowStateAnimator winAnimator) {
    firstWindowDrawn = true;

    // We now have a good window to show, remove dead placeholders
    removeDeadWindows();

    if (startingWindow != null) {
        if (DEBUG_STARTING_WINDOW || DEBUG_ANIM) Slog.v(TAG, "Finish starting "
                + win.mToken + ": first real window is shown, no animation");
        // If this initial window is animating, stop it -- we will do an animation to reveal
        // it from behind the starting window, so there is no need for it to also be doing its
        // own stuff.
        winAnimator.clearAnimation();
        if (getController() != null) {
            getController().removeStartingWindow();
        }
    }
    updateReportedVisibilityLocked();
}  

有TaskSnapshot ，播放完移除TaskSnapshot。这里是app 第一个窗口准备好了，会移除TaskSnapshot ，这个是在

 at com.android.server.wm.SnapshotStartingData.createStartingSurface(SnapshotStartingData.java:39)

 at com.android.server.wm.AppWindowContainerController.lambda$-com_android_server_wm_AppWindowContainerController_5707(AppWindowContainerController.java:165)

里面到调用的，及创建surface 时调用的。