错误日志:

 E/InputEventReceiver(24931): Exception dispatching input event.

 E/MessageQueue-JNI(24931): Exception in MessageQueue callback: handleReceiveCallback

 E/MessageQueue-JNI(24931): java.lang.NullPointerException

 E/MessageQueue-JNI(24931): at com.langyi.light.TurnplateView.switchScreen(TurnplateView.java:257)

 E/MessageQueue-JNI(24931): at com.langyi.light.TurnplateView.dispatchTouchEvent(TurnplateView.java:272)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176)

 E/MessageQueue-JNI(24931): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919)

 E/MessageQueue-JNI(24931): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1929)

 E/MessageQueue-JNI(24931): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1383)

 E/MessageQueue-JNI(24931): at android.app.Activity.dispatchTouchEvent(Activity.java:2396)

 E/MessageQueue-JNI(24931): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1877)

 E/MessageQueue-JNI(24931): at android.view.View.dispatchPointerEvent(View.java:7307)

 E/MessageQueue-JNI(24931): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3174)

 E/MessageQueue-JNI(24931): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3119)

 E/MessageQueue-JNI(24931): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4157)

 E/MessageQueue-JNI(24931): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4136)

 E/MessageQueue-JNI(24931): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4228)

 E/MessageQueue-JNI(24931): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171)

 E/MessageQueue-JNI(24931): at android.os.MessageQueue.nativePollOnce(Native Method)

 E/MessageQueue-JNI(24931): at android.os.MessageQueue.next(MessageQueue.java:125)

 E/MessageQueue-JNI(24931): at android.os.Looper.loop(Looper.java:124)

 E/MessageQueue-JNI(24931): at android.app.ActivityThread.main(ActivityThread.java:4794)

 E/MessageQueue-JNI(24931): at java.lang.reflect.Method.invokeNative(Native Method)

 E/MessageQueue-JNI(24931): at java.lang.reflect.Method.invoke(Method.java:511)

 E/MessageQueue-JNI(24931): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)

 E/MessageQueue-JNI(24931): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)

 E/MessageQueue-JNI(24931): at dalvik.system.NativeStart.main(Native Method)

 W/dalvikvm(24931): threadid=1: thread exiting with uncaught exception (group=0x41308438)

产生原因:

多次触发触摸屏事件，导致对同一个事件处理的消息过多，当第一个消息已处理完事件并销毁事件时，由于该事件已销毁但还没来得及通知销毁第二个同样的消息，当主线程执行第二个消息时，由于获取不了该事件，所以抛出异常。

解决：用try..catch..包围TouchEvent事件处理。