焦点切换流程

RootWindowContainer#performSurfacePlacement ->

    WindowManagerService#updateFocusedWindowLocked ->

    RootWindowContainer#updateFocusedWindowLocked ->

    DisplayContent#findFocusedWindowIfNeeded ->

    InputMonitor#updateInputWindowsLw ->

    SurfaceControl#setFocusedWindow ->

    SurfaceFlinger#... -> InputDispatcher#setInputWindowsLocked

堆栈:

at com.android.server.wm.WindowManagerService.updateFocusedWindowLocked(WindowManagerService.java:6590)

    at com.android.server.wm.ActivityRecord.commitVisibility(ActivityRecord.java:6171)

    at com.android.server.wm.ActivityRecord.commitVisibility(ActivityRecord.java:6182)

    at com.android.server.wm.ActivityRecord.setVisibility(ActivityRecord.java:6062)

    at com.android.server.wm.ActivityRecord.setVisibility(ActivityRecord.java:5885)

    at com.android.server.wm.ActivityRecord.completeResumeLocked(ActivityRecord.java:7005)

    at com.android.server.wm.TaskFragment.resumeTopActivity(TaskFragment.java:1648)

    at com.android.server.wm.Task.resumeTopActivityInnerLocked(Task.java:5901)

    at com.android.server.wm.ActivityRecord.makeActiveIfNeeded(ActivityRecord.java:6831)

    at com.android.server.wm.RootWindowContainer.lambda$resumeFocusedTasksTopActivities$18(RootWindowContainer.java:2566)

    at com.android.server.wm.RootWindowContainer$$ExternalSyntheticLambda17.accept(Unknown Source:15)

    at com.android.server.wm.WindowContainer.forAllRootTasks(WindowContainer.java:2158)

    at com.android.server.wm.RootWindowContainer.resumeFocusedTasksTopActivities(RootWindowContainer.java:2542)