试试这个

Question

你们可以帮助我吗

这是我添加片段的代码

mRecyclerView.addOnItemTouchListener(
    new RecyclerItemClickListener(getActivity(), new RecyclerItemClickListener.OnItemClickListener() {
        @Override
        public void onItemClick(View view, int position) {
            if (!IsScrolling) {
                Fragment fragment = new ProductInfoFragment();
                    Bundle bundle = new Bundle();
                    bundle.putString("prodID", mItems.get(position).getproductID());
                    bundle.putString("catName", catName);
                    fragment.setArguments(bundle);
                    FragmentManager fragmentManager = getActivity().getFragmentManager();
                    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
                                        fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                                        fragmentTransaction.add(R.id.fragmentContainer, fragment, "ProuctInfoFragment");
                                        fragmentTransaction.addToBackStack(null);
                                        fragmentTransaction.commit();
                                        mItems.clear();
                                    }

                                }

                            })
                    );

但是当我从添加的片段中按回来时，我收到了此错误并且我的应用程序崩溃了。

FATAL EXCEPTION: main Process: com.tiseno.poplook, PID: 2617
 java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 5(offset:5).state:9
      at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4401)
      at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4359)
      at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1961)
      at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:438)
      at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1333)
      at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1161)
      at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:1018)
      at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:3807)
      at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
      at android.view.Choreographer.doCallbacks(Choreographer.java:670)
      at android.view.Choreographer.doFrame(Choreographer.java:603)
      at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
      at android.os.Handler.handleCallback(Handler.java:739)
      at android.os.Handler.dispatchMessage(Handler.java:95)
      at android.os.Looper.loop(Looper.java:224)
      at android.app.ActivityThread.main(ActivityThread.java:5514)
      at java.lang.reflect.Method.invoke(Native Method)
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

为什么会这样？请帮忙。我正在使用两个片段。产品列表fragent和产品详细信息片段

Answer 1

您在未通知mItems.clear();适配器的情况下呼叫RecyclerView数据中的某些内容已更改。每次更改适配器使用的数据后，您需要调用adapter.notifyDataSetChanged();

请参阅this。

Answer 2

试试这个

我遇到了同样的问题，当您清除列表时，您必须通知适配器，因为每次更改列表并且适配器包含旧列表时，您必须在添加新列表之前清除列表后通知适配器适配器中的项目

在您的课程开始时创建数据成员的实例

ArrayList<HashMap<String,String>> yourarraylist =new ArrayList<>();
Youradaptername instance;

通知适配器

 yourarraylist .clear();
 instance.notifyDataSetChanged();

Answer 3

问题可能与适配器有关。如果在适配器构造函数中使用setHasStableIds(true);，则需要确保使用stable ids。

确保在适配器中正确覆盖getItemId。应该是：

@Override
public long getItemId(int position) {
   return yourList == null ? 0 : yourList.get(position).getId();
}

不是：

@Override
public long getItemId(int position) {
     return position;
}

RecyclerView java.lang.IndexOutOfBoundsException：检测到不一致。从添加的片段恢复时无效的项目位置

3 个答案:

试试这个