android - DrawerLayout - 异常调度输入事件

Question

大约一周前，我最近开始在一个新项目中使用 DrawerLayout，一切正常。除了用手指滑入和滑出它的奇怪时间外，它会崩溃。

不过，如果我使用 ActionBar Up/Home MenuItem，它每次都能正常工作。

在 LogCat 中，我得到两个堆栈跟踪，它们似乎都指向内部 android 位置，所以我不太清楚如何解决这个问题。

我刚刚尝试创建一个新应用程序，看看是不是我之前做的事情导致了这个问题，但它也发生在新应用程序中。

我在“新建 Android 应用程序”窗口中使用 Master/Detail Flow 模板创建了新应用程序，将所有内容保留为默认值，只是更改了 activity_item_list.xml 以将其包含在其中:

<android.support.v4.widget.DrawerLayout  
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <fragment
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/item_list"
        android:name="com.navdrawertest.ItemListFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        tools:context=".ItemListActivity"
        tools:layout="@android:layout/list_content" />

    <!-- Navigation Drawer -->
    <ListView
        android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="#111" />
 </android.support.v4.widget.DrawerLayout>

DrawerLayout 显示出来，我仍然可以将它从屏幕边缘拖动，但它仍然在此测试应用程序中崩溃。

这是我用手指拖动它后看到的堆栈跟踪:

07-26 09:29:45.574: E/InputEventReceiver(19085): Exception dispatching input event.
07-26 09:29:45.574: E/MessageQueue-JNI(19085): Exception in MessageQueue callback: handleReceiveCallback
07-26 09:29:45.584: E/MessageQueue-JNI(19085): java.lang.NullPointerException
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.support.v4.widget.DrawerLayout.isContentView(DrawerLayout.java:840)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(DrawerLayout.java:866)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1852)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1966)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1418)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.app.Activity.dispatchTouchEvent(Activity.java:2424)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1914)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.View.dispatchPointerEvent(View.java:7564)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3883)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3778)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3483)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3540)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5419)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5399)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5370)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5493)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:182)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.os.MessageQueue.nativePollOnce(Native Method)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.os.MessageQueue.next(MessageQueue.java:132)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.os.Looper.loop(Looper.java:124)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at android.app.ActivityThread.main(ActivityThread.java:5103)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at java.lang.reflect.Method.invokeNative(Native Method)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at java.lang.reflect.Method.invoke(Method.java:525)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-26 09:29:45.584: E/MessageQueue-JNI(19085):  at dalvik.system.NativeStart.main(Native Method)
07-26 09:29:45.584: D/AndroidRuntime(19085): Shutting down VM
07-26 09:29:45.584: W/dalvikvm(19085): threadid=1: thread exiting with uncaught exception (group=0x41cbb700)
07-26 09:29:45.594: E/AndroidRuntime(19085): FATAL EXCEPTION: main
07-26 09:29:45.594: E/AndroidRuntime(19085): java.lang.NullPointerException
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.support.v4.widget.DrawerLayout.isContentView(DrawerLayout.java:840)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(DrawerLayout.java:866)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1852)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2209)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1910)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1966)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1418)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.app.Activity.dispatchTouchEvent(Activity.java:2424)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1914)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.View.dispatchPointerEvent(View.java:7564)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3883)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3778)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3483)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3540)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5419)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5399)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5370)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5493)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:182)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.os.MessageQueue.nativePollOnce(Native Method)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.os.MessageQueue.next(MessageQueue.java:132)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.os.Looper.loop(Looper.java:124)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at android.app.ActivityThread.main(ActivityThread.java:5103)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at java.lang.reflect.Method.invokeNative(Native Method)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at java.lang.reflect.Method.invoke(Method.java:525)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-26 09:29:45.594: E/AndroidRuntime(19085):    at dalvik.system.NativeStart.main(Native Method)

我在这里遗漏了什么吗？

编辑:10 天后仍然无法解决这个问题，我至少可以确认这不仅仅是我得到这个吗？

Answer 1

我也收到了这个错误消息，但起初我无法找出是什么原因造成的。在做了一些测试之后，我实际上发现 删除 View 上的所有边距(在您的示例中是 fragment )似乎可以解决问题。

所以在你的情况下会是:

<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/item_list"
    android:name="com.navdrawertest.ItemListFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ItemListActivity"
    tools:layout="@android:layout/list_content" />

并且您可以改为在该 fragment 内的所有 View 上设置边距(但我还没有测试过)。希望它能帮助别人。看来这个问题不是那么普遍。