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`Android 9中调用ActivityLifecycleCallbacks.onActivityStopped`时没有调用ActivityLifecycleCallbacks.onActivityStarted`?_Android_Performance_Android Lifecycle - Fatal编程技术网

`Android 9中调用ActivityLifecycleCallbacks.onActivityStopped`时没有调用ActivityLifecycleCallbacks.onActivityStarted`?

`Android 9中调用ActivityLifecycleCallbacks.onActivityStopped`时没有调用ActivityLifecycleCallbacks.onActivityStarted`?,android,performance,android-lifecycle,Android,Performance,Android Lifecycle,我最近看到了一个崩溃,只出现在Android 9设备上: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference at android.view.View.findFrameMetricsObserver(View.java:7279) at android.view.Vie

我最近看到了一个崩溃,只出现在Android 9设备上:

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference
  at android.view.View.findFrameMetricsObserver(View.java:7279)
  at android.view.View.removeFrameMetricsListener(View.java:7250)
  at android.view.Window.removeOnFrameMetricsAvailableListener(Window.java:886)
  at androidx.core.app.FrameMetricsAggregator$FrameMetricsApi24Impl.remove(FrameMetricsAggregator.java:433)
  at androidx.core.app.FrameMetricsAggregator.remove(FrameMetricsAggregator.java:243)
  at PerfMetricsListener.remove(PerfMetricsActivityLifecycleCallbacks.java:xx)
最近与一起使用,在
onActivityStarted
中添加
活动
,并在
onActivityStopped
中删除它。查看
视图
的更改,出现了一个错误,但如果未添加
FrameMetricsObserver
,它仍将崩溃

看一看,这应该是不可能的,我想知道也许打电话或其他什么会导致这种行为。你见过这种情况吗?原因可能是什么