Entfernen Sie ein Element in RecyclerView - Android

Stehe ich vor einem problem, ich konnte Sie nicht entfernen Sie ein Element in RecyclerView.
Ich bin versucht, suchen im Internet, konnte aber nicht sehen, keine Lösung
Ich bin nach diesem post
Android RecyclerView addition & entfernen von Elementen
Aber ich konnte immer noch nicht entfernen Sie das Element ausgewählt
Unten ist mein code für meine adapter und fragement

RecyclerViewAdapter.java

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
List<VideoDetails> contents2;
Context mContext;
ImageLoader imageLoader;
static final int TYPE_HEADER = 0;
static final int TYPE_CELL = 1;
public RecyclerViewAdapter(List<VideoDetails> contents) {
    this.contents2 = contents;
}
public RecyclerViewAdapter(Context context, List<VideoDetails> contents) {
    mContext = context;
    this.contents2 = contents;
    imageLoader = new ImageLoader(context);
}
@Override
public int getItemViewType(int position) {
    return position;

}
@Override
public int getItemCount() {
    return contents2.size();
}
@Override
public RecyclerViewAdapter.ViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
    View view = null;
    view = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.list_item_card_small2, parent, false);
    ViewHolder vh = new ViewHolder(view);
    return vh;
}
 @Override
public void onBindViewHolder(ViewHolder holder,final int position) {
    holder.title.setText(contents2.get(position).getTitle());
     holder.image.setOnClickListener(new View.OnClickListener(){
         @Override
         public void onClick(View view) {
             Log.d("thien.van","on Click onBindViewHolder");
             contents2.remove(position);
             notifyItemRemoved(position);
             notifyItemRangeChanged(position, contents2.size());

         }
     });
}
public Bitmap getThumbnail(String str) {

    Bitmap bMap = ThumbnailUtils.createVideoThumbnail(str, MediaStore.Video.Thumbnails.MINI_KIND);
    return bMap;
}
public class ViewHolder extends RecyclerView.ViewHolder implements  View.OnClickListener {


    public TextView title;
    public ImageView image;
    public ProgressBar progressBar;

    public ViewHolder(View itemView) {
        super(itemView);
        title = (TextView) itemView.findViewById(R.id.title);
        image = (ImageView) itemView.findViewById(R.id.thumbnail);
        progressBar = (ProgressBar) itemView.findViewById(R.id.progress);
      // image.setOnClickListener(this);
    }
    @Override
    public void onClick(View view) {
        Log.d("thien.van","onClick getAdapterPosition             () = "+getAdapterPosition());
        removeAt(getAdapterPosition());
    }
}
public void removeAt(int position) {
    contents2.remove(position);
    notifyDataSetChanged();
}

}

RecyclerViewFragment

public class RecyclerViewFragment extends Fragment {

private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;

private static final int ITEM_COUNT = 2;

private List<Object> mContentItems = new ArrayList<>();
private static List<VideoDetails> mContentItems2 = new ArrayList<>();

public static RecyclerViewFragment newInstance() {
    return new RecyclerViewFragment();
}

public static RecyclerViewFragment newInstance(List<VideoDetails> contentItems) {
    RecyclerViewFragment myFragment = new RecyclerViewFragment();
    // mContentItems = contentItems;
    Bundle args = new Bundle();
    args.putSerializable("thienvan", (Serializable) contentItems);
    myFragment.setArguments(args);
    return myFragment;
}

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    mContentItems2 = (List<VideoDetails>) getArguments().getSerializable("thienvan");
    //Log.d("thien.van","Fragment file name = "+mContentItems2.get(0).getTitle());
    return inflater.inflate(R.layout.fragment_recyclerview, container, false);
}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    mRecyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity());
    mRecyclerView.setLayoutManager(layoutManager);
    //mRecyclerView.setHasFixedSize(true);

    mAdapter = new RecyclerViewMaterialAdapter(new RecyclerViewAdapter(getActivity().getBaseContext(),mContentItems2));
    mRecyclerView.setAdapter(mAdapter);

    /*{
        for (int i = 0; i < ITEM_COUNT; ++i)
            mContentItems.add(new Object());
        mAdapter.notifyDataSetChanged();
    }*/

    MaterialViewPagerHelper.registerRecyclerView(getActivity(), mRecyclerView, null);
}
//http://android--code.blogspot.com/2015/12/android-recyclerview-add-remove-item.html

}

Konnte ich nicht entfernen Sie ein Element in Adapter-Klasse.
Könnte jemand mir helfen ?

InformationsquelleAutor user3157841 | 2016-04-26