那些遇到过的问题

DrawerLayout - 异常调度输入事件

Mik*_*ike 11 android android-layout android-fragments android-support-library drawerlayout

我最近在一个星期前开始在一个新项目中使用DrawerLayout,它一切正常.除了用我的手指轻扫它的奇怪时间,它会崩溃.

如果我使用ActionBar Up/Home MenuItem,它每次都会正常工作.

在LogCat中,我得到两个堆栈跟踪,它们似乎都指向内部的android位置,所以我不知道如何解决这个问题.

我刚刚尝试创建一个新的应用程序,以查看它是否是我之前正在做的事情,但它也发生在新的应用程序中.

我在"新建Android应用程序"窗口中使用主/详细信息流模板创建了新应用程序,将所有内容保留为默认值,然后更改了activity_item_list.xml以将其包含在内:

<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>
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DrawerLayout显示,我仍然可以从屏幕边缘拖动它,但它仍然在此测试应用程序中崩溃.

这是我用手指拖动后看到的堆栈跟踪:

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)
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这里有什么我想念的吗？

编辑:10天后仍然无法弄清楚这一点,我能否至少得到确认,这不仅仅是我得到这个？

小智 11

我也有这个错误信息,但起初我无法找出导致它的原因.在做了一些测试之后,我实际上发现删除 View上的所有边距(在你的例子中是片段)似乎可以解决问题.

所以在你的情况下它将是:

<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" />
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你可以在这个片段内的所有视图上设置边距(但我还没有测试过).希望它可以帮助某人.看来这个问题并不常见.

Mik*_*ike 8

我想我已经设法通过从支持库源代码创建我自己需要的文件副本并捕获null视图来解决这个问题isContentView().

我需要的来源是:

  • ActionBarDrawerToggle.java
  • ActionBarDrawerToggleHoneycomb.java
  • DrawerLayout.java

我把它们放在我项目中的自己的包中并重命名DrawerLayout为FixedDrawerLayout.(所以我可以很容易地告诉我正在使用的DrawerLayout的哪个副本)

然后我改为isContentView():

boolean isContentView(View child) {
    if(child == null){
        return false;
    }
    return ((LayoutParams) child.getLayoutParams()).gravity == Gravity.NO_GRAVITY;
}
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交换所有引用到DrawerLayout我Activity的FixedDrawerLayout内容后似乎修复了它.

不确定是否有任何事情可以通过返回false而发生isContentView(),但它不会再崩溃,即使child是null 也仍然可用.

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