android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3147)

Question

你知道为什么会出现这种崩溃吗？跟踪只有本机代码，所以很难追踪到它。当我在Fragment中运行动画时，在三星Galaxy s3平台4.1.2上会发生这种情况，当动画结束时，我为FragmentStatePagerAdapter调用notifyDataSetChanged。问题不是100%可重现的。

谢谢。

跟踪：

03-01 11:50:11.836: E/AndroidRuntime(21136): FATAL EXCEPTION: main
03-01 11:50:11.836: E/AndroidRuntime(21136): java.lang.NullPointerException
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3147)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3151)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12646)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.View.getDisplayList(View.java:12754)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:1144)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewRootImpl.draw(ViewRootImpl.java:2273)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2145)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1956)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1112)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4472)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.Choreographer.doCallbacks(Choreographer.java:555)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.Choreographer.doFrame(Choreographer.java:525)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.os.Handler.handleCallback(Handler.java:615)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.os.Handler.dispatchMessage(Handler.java:92)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.os.Looper.loop(Looper.java:137)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at android.app.ActivityThread.main(ActivityThread.java:4898)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at java.lang.reflect.Method.invokeNative(Native Method)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at java.lang.reflect.Method.invoke(Method.java:511)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
03-01 11:50:11.836: E/AndroidRuntime(21136):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

修复很简单，但不知道为什么有效。

在AnimationListener的onAnimationEnd回调中，我有一个触发了notifyDataSetChanged的回调，我将该回调添加到Runnable中，并使用getView().post运行Runnable

@Override
                public void onAnimationEnd(Animation animation) {

                    getView().post(new Runnable() {

                        @Override
                        public void run() {
                            // notifyDataSetChanged here
                        }
                    });
                }

Answer 2

很好的答案，但是和所有Android一样，这些答案很快就过时了。我现在会使用runOnUiThread。我和动画师一起在一个基类中运行，作为一个私有类。要深入了解runOnUiThread，请参阅

Android basics: running code in the UI thread

    @Override
    public void onAnimationEnd(Animator animation) {

        //
        MyBaseActivity.this.runOnUiThread(new Runnable() {
            public void run() {
                Log.d("UI thread", "I am the UI thread");                    
            }
        });

    }