Android-L问题：在使用标志“活动”时按下“重新排序”按钮以启动上一个活动&；将应用程序冻结一段时间

我的申请有一种奇怪的行为

我在Nexus7或MotoG等Android L.O.S.设备上通过以下步骤证明了这个问题

该应用程序以活动A开始，只显示一个名为“启动B”的按钮

按下此按钮——这将执行开始活动（将活动重新排序到活动B.class的前端）

活动B变为活动状态，在UI线程上执行一些UI和反手加载操作

从活动B按back后，在活动B按back后，将执行startActivity（将标记\活动\重新排序\到\前面，ActivityA.class）

活动A的onResume（）按预期调用，一切正常（我可以再次看到活动A的内容）

按下设备的后退键，应用程序冻结约10秒或更长时间，然后退出应用程序。不调用onPause（），onDestroy（）。 （因此可能是具有特定日志的anr）

有时，或者可能重复上述步骤4-5次，不幸的是，这也会迫使谷歌快速搜索框关闭

查看系统日志后： 找到一些重要日志：

E/ActivityManager(  958): Reason: Input dispatching timed out (Waiting because no window has focus but there is a focused application that may eventually add a window when it finishes starting up.)

重要日志：看一看

D/SFPerfTracer(  278):        layers: (2:12) (FocusedStackFrame (0xb8fa6b48): 0:637)* (DimLayer (0xb8fa95c0): 0:14)* (DimLayer (0xb8fe63b0): 0:510)* (DimLayer (0xb8fb7228): 0:213)* (StatusBar (0xb8fd10c0): 0:5421)* (com.android.systemui.ImageWallpaper (0xb8fd6a28): 0:454)* (NavigationBar (0xb8fbaa18): 8:744) (com.android.systemui/com.android.systemui.recents.RecentsActivity (0xb8fbbca8): 0:86)- (com.abc.myapp/com.mypackage.abc.MainActivity (0xb8fd3560): 0:25)- (thumbnail anim (0xb8ff72b0): 0:12)- (com.abc.myapp/com.mypackage.abc_etv.EtvLaunchActivity (0xb8ffb570): 14:34) 

I/LaunchCheckinHandler(  958): Displayed com.abc.myapp/com.mypackage.abc.MainActivity,wp,wa,286

I/WindowManager(  958): Input event dispatching timed out sending to application AppWindowToken{23d5f06c token=Token{299ea51f ActivityRecord{2f0940be u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t4}}}.  Reason: Waiting because no window has focus but there is a focused application that may eventually add a window when it finishes starting up.

I/WindowManager(  958): Input event dispatching timed out sending to application AppWindowToken{23d5f06c token=Token{299ea51f ActivityRecord{2f0940be u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t4}}}.  Reason: Waiting because no window has focus but there is a focused application that may eventually add a window when it finishes starting up.

E/ActivityManager(  958): ANR in com.google.android.googlequicksearchbox (com.google.android.googlequicksearchbox/com.google.android.launcher.GEL)

E/ActivityManager(  958): PID: 655

E/ActivityManager(  958): Reason: Input dispatching timed out (Waiting because no window has focus but there is a focused application that may eventually add a window when it finishes starting up.)

---

顺便说一句，这和和和是同一个问题