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

Question

知道为什么会出现此崩溃吗？跟踪只有 native 代码，因此很难追踪到它。当我在 Fragment 中运行动画并且当动画结束时我为 FragmentStatePagerAdapter 调用 notifyDataSetChanged 时发生在 Samsung Galaxy s3 平台 4.1.2 上。该问题不是 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 notifyDataSetChanged 的回调。我将该回调添加到 Runnable 并使用 getView().post

运行 Runnable

@Override
                public void onAnimationEnd(Animation animation) {

                    getView().post(new Runnable() {

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