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我的 Android 应用程序经常在启动时崩溃，并给出以下异常：

05-31 01:36:26.989: E/AndroidRuntime(13825): FATAL EXCEPTION: main
05-31 01:36:26.989: E/AndroidRuntime(13825): java.lang.NullPointerException
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewGroup.resolveTextAlignment(ViewGroup.java:5318)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.View.resolveRtlPropertiesIfNeeded(View.java:11591)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewGroup.resolveRtlPropertiesIfNeeded(ViewGroup.java:5262)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewGroup.resolveRtlPropertiesIfNeeded(ViewGroup.java:5267)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewGroup.resolveRtlPropertiesIfNeeded(ViewGroup.java:5267)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewGroup.resolveRtlPropertiesIfNeeded(ViewGroup.java:5267)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.View.setLayoutDirection(View.java:5901)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1190)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.Choreographer.doCallbacks(Choreographer.java:562)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.Choreographer.doFrame(Choreographer.java:532)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.os.Handler.handleCallback(Handler.java:725)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.os.Handler.dispatchMessage(Handler.java:92)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.os.Looper.loop(Looper.java:137)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at android.app.ActivityThread.main(ActivityThread.java:5041)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at java.lang.reflect.Method.invokeNative(Native Method)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at java.lang.reflect.Method.invoke(Method.java:511)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-31 01:36:26.989: E/AndroidRuntime(13825):    at dalvik.system.NativeStart.main(Native Method)

它似乎没有在异常中引用我的代码，这使得调试非常困难。我是 Android 开发的新手（但在 iOS 开发方面经验丰富）。任何想法这个异常意味着什么以及我该如何解决它？它仅在启动时有时会发生。

谢谢！

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1 回答 1

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powerj1984: 哦，是的，你是对的。在后台线程上，我正在调用一个方法来更新它底部的 UI（忘记了）。谢谢你们的帮助，你们摇滚。

于 2013-05-31T13:20:58.330 回答