android - 在 recyclerview 中设置 Adapter

Question

我正在尝试使用 recyclerview 并设置适配器，但出现错误:-

没有连接适配器；跳过布局所以请帮我解决这个问题

public class FragmentTwo extends Fragment {
private AppAdapter mAppAdapter;
private ArrayList<Model> mModel;
@Bind(R.id.recycler_view)
RecyclerView recyclerView;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_two, container, false);
    ButterKnife.bind(this, v);
    recyclerView.setHasFixedSize(true);
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity());
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(mAppAdapter);
    parseData();
    return v;
}

 private void parseData() {
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("url")
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    ReqInterface reqInterface = retrofit.create(ReqInterface.class);
    Call<Model> call = reqInterface.getAdvanceData("france");
    call.enqueue(new Callback<Model>() {
        @Override
        public void onResponse(Call<Model> call, Response<Model> response) {
            Model model = response.body();
            mModel = new ArrayList<Model>(Arrays.asList(model));
            mAppAdapter = new AppAdapter(mModel);
            recyclerView.setAdapter(mAppAdapter);
            mAppAdapter.notifyDataSetChanged();
        }
        @Override
        public void onFailure(Call<Model> call, Throwable t) {
        }
     });
    }
  }

这是我的 Recyclerview 适配器类:-

public class AppAdapter extends RecyclerView.Adapter<AppAdapter.ViewHolder> {
private ArrayList<Model> mModel;
TextView highTemp;

public AppAdapter(ArrayList<Model> model) {
    mModel = model;
}

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView highTemp;
    public ViewHolder(View view) {
        super(view);
        highTemp = (TextView) view.findViewById(R.id.card_view_tv_hightemp);
    }
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
    View view = LayoutInflater.from(viewGroup.getContext())
            .inflate(R.layout.fragment_two, viewGroup, false);
    return new ViewHolder(view);

}

@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
    viewHolder.highTemp.setText(String.valueOf(mModel.getName);
}

@Override
public int getItemCount() {
    return mModel.size();
  }
}

提前致谢

Answer 1

您永远不会初始化适配器 mAppAdapter，因此它在运行时为空。你错过了像 mAppAdapter = new AppAdapter(yourdata); 这样的东西在调用 setAdapter 之前。