在新的RecyclerView中,我们可以使用wrap_content作为高度(或宽度).所以谷歌修复了错误 –
https://code.google.com/p/android/issues/detail?id=74772
但最终并非一切都很顺利.
从RecyclerView中删除项目时,我尝试使用消失的动画.
所以我使用适配器的方法 – notifyItemRemoved(int)与任何参数和RecyclerView导致NullPointerException.
Xml代码：
...
<RecyclerView
android:id="@+id/RecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
android:overScrollMode="always"/>
...
日志：
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NullPointerException
at android.support.v7.widget.SimpleItemAnimator.animateDisappearance(SimpleItemAnimator.java:78)
at android.support.v7.widget.RecyclerView.animateDisappearance(RecyclerView.java:3246)
at android.support.v7.widget.RecyclerView.access$700(RecyclerView.java:147)
at android.support.v7.widget.RecyclerView$4.processDisappeared(RecyclerView.java:422)
at android.support.v7.widget.ViewInfoStore.process(ViewInfoStore.java:231)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3086)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2914)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3277)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14015)
at android.view.ViewGroup.layout(ViewGroup.java:4373)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
at android.view.Choreographer.doCallbacks(Choreographer.java:562)
at android.view.Choreographer.doFrame(Choreographer.java:532)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5227)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
at dalvik.system.NativeStart.main(Native Method)
也许有这些问题的临时解决方法？
编辑
我试图在新项目中重现.所以没有抛出异常.也许在我的项目中还有其他依赖关系来调用这个问题.
