Question

我的代码：

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.fragment_one, container, false);
        RecyclerView recyclerView = (RecyclerView)view.findViewById(R.id.recyclerView);
        RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity());
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(mAdapter);
        return view;
    }

例外：

java.lang.IllegalStateException：指定的子节点已经有了家长。您必须首先在孩子的父母上调用removeView（）。在android.view.ViewGroup.addViewInner（ViewGroup.java:3509）在android.view.ViewGroup.addView（ViewGroup.java:3380）在android.view.ViewGroup.addView（ViewGroup.java:3325）在 android.support.v7.widget.RecyclerView $ 5.addView（RecyclerView.java:591）在android.support.v7.widget.ChildHelper.addView（ChildHelper.java:107）在 android.support.v7.widget.RecyclerView $ LayoutManager.addViewInt（RecyclerView.java:6695）在 android.support.v7.widget.RecyclerView $ LayoutManager.addView（RecyclerView.java:6653）在 android.support.v7.widget.RecyclerView $ LayoutManager.addView（RecyclerView.java:6641）在 android.support.v7.widget.LinearLayoutManager.layoutChunk（LinearLayoutManager.java:1398）在 android.support.v7.widget.LinearLayoutManager.fill（LinearLayoutManager.java:1347）在 android.support.v7.widget.LinearLayoutManager.onLayoutChildren（LinearLayoutManager.java:574）在 android.support.v7.widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java:3003）在 android.support.v7.widget.RecyclerView.dispatchLayout（RecyclerView.java:2881）在 android.support.v7.widget.RecyclerView.onLayout（RecyclerView.java:3265）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.RelativeLayout.onLayout（RelativeLayout.java:1076）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.support.v4.view.ViewPager.onLayout（ViewPager.java:1695）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在 android.support.design.widget.HeaderScrollingViewBehavior.layoutChild（HeaderScrollingViewBehavior.java:122）在 android.support.design.widget.ViewOffsetBehavior.onLayoutChild（ViewOffsetBehavior.java:42）在 android.support.design.widget.AppBarLayout $ ScrollingViewBehavior.onLayoutChild（AppBarLayout.java:1149）在 android.support.design.widget.CoordinatorLayout.onLayout（CoordinatorLayout.java:810）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.FrameLayout.onLayout（FrameLayout.java:448）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.FrameLayout.onLayout（FrameLayout.java:448）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.widget.FrameLayout.onLayout（FrameLayout.java:448）在android.view.View.layout（View.java:14471）在android.view.ViewGroup.layout（ViewGroup.java:4562）在android.view.ViewRootImpl.performLayout（ViewRootImpl.java:1984）在android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:1738）在android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1008）在 android.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java:5509）在 android.view.Choreographer $ CallbackRecord.run（Choreographer.java:749）在android.view.Choreographer.doCallbacks（Choreographer.java:562）在android.view.Choreographer.doFrame（Choreographer.java:532）在 android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:735）在android.os.Handler.handleCallback（Handler.java:730）在android.os.Handler.dispatchMessage（Handler.java:92）在android.os.Looper.loop（Looper.java:137）在android.app.Acti

为什么会出现此异常？java.lang.IllegalStateException

0 个答案: