java.lang.NullPointerException at android.support.v4.view.ViewCompat $ ICSViewCompatImpl.setAccessibilityDelegate(ViewCompat.java:834) 在 android.support.v4.view.ViewCompat.setAccessibilityDelegate(ViewCompat.java:1169) 在 android.support.v7.widget.RecyclerView $ Recycler.addViewHolderToRecycledViewPool(RecyclerView.java:3900) 在 android.support.v7.widget.RecyclerView $ Recycler.recycleCachedViewAt(RecyclerView.java:3843) 在 android.support.v7.widget.RecyclerView $ Recycler.recycleViewHolderInternal(RecyclerView.java:3880) 在 android.support.v7.widget.RecyclerView $ Recycler.recycleView(RecyclerView.java:3804) 在 android.support.v7.widget.RecyclerView $ LayoutManager.removeAndRecycleViewAt(RecyclerView.java:5529) 在 android.support.v7.widget.LinearLayoutManager.recycleChildren(LinearLayoutManager.java:1139) 在 android.support.v7.widget.LinearLayoutManager.recycleViewsFromStart(LinearLayoutManager.java:1180) 在 android.support.v7.widget.LinearLayoutManager.recycleByLayoutState(LinearLayoutManager.java:1244) 在 android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1268) 在 android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1102) 在 android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:959) 在 android.support.v7.widget.RecyclerView $ ViewFlinger.run(RecyclerView.java:3062) 在 android.view.Choreographer $ CallbackRecord.run(Choreographer.java:761) 在android.view.Choreographer.doCallbacks(Choreographer.java:574)at android.view.Choreographer.doFrame(Choreographer.java:543)at android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:747) 在android.os.Handler.handleCallback(Handler.java:733)处 android.os.Handler.dispatchMessage(Handler.java:95)at android.os.Looper.loop(Looper.java:136)at android.app.ActivityThread.main(ActivityThread.java:5017)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:515)at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:779) 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)at dalvik.system.NativeStart.main(原生方法)