使用ViewGroup抛出NullPointerException

Question

有没有人有线索可能导致这种情况？

11-16 16:23:26.745: ERROR/AndroidRuntime(9549): Uncaught handler: thread main exiting due to uncaught exception 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549): java.lang.NullPointerException 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:692) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:692) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.view.ViewRoot.performTraversals(ViewRoot.java:722) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1658) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.os.Handler.dispatchMessage(Handler.java:99) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.os.Looper.loop(Looper.java:123) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at android.app.ActivityThread.main(ActivityThread.java:4363) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at java.lang.reflect.Method.invoke(Method.java:521) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620) 
11-16 16:23:26.765: ERROR/AndroidRuntime(9549):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

此错误用于在我们的崩溃报告中显示出一些规律性。追踪非常困难，但最终我们发现我们有时会触发代码，从surfaceDestroyed（）（SurfaceHolder的回调方法）的视图层次结构中删除视图。如果您的应用程序使用的是SurfaceView，请确保您没有做任何修改surfaceDestroyed（）中的视图层次结构的操作。