Question

我一直试图解决这个问题很长一段时间，但我无法弄清问题是什么。目的是向Songkick api（即json）提出请求，该请求将返回即将发生的艺术家事件并将其填充到片段上。该请求工作正常，但它不会使用recyclerView在屏幕上显示。

这是我的xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.artispot.fragments.FragmentEvents">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/List"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v7.widget.RecyclerView>

</LinearLayout>

这是适配器：

public class AdapterEvents extends RecyclerView.Adapter<AdapterEvents.ViewHolderEvents> {
private LayoutInflater layoutInflater;
private String cls = "TAG";
private ArrayList<Events> listEvents = new ArrayList<>();

public AdapterEvents(Context context){
    layoutInflater = LayoutInflater.from(context);
}

public void setListEvents(ArrayList<Events> listEvents){
    this.listEvents = listEvents;
    notifyItemRangeChanged(0,listEvents.size());
}

@Override
public ViewHolderEvents onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = layoutInflater.inflate(R.layout.custom_events,parent,false);
    ViewHolderEvents viewHolder =new ViewHolderEvents(view);
    return viewHolder;
}

//create an object for each textview
@Override
public void onBindViewHolder(ViewHolderEvents holder, int position) {
    Events currentEvent = listEvents.get(position);
    holder.DateTextView.setText(currentEvent.getStartDate());
//        + "--"+ currentEvent.getEndDate()
    holder.displayName.setText(currentEvent.getDisplayName());
    holder.Venue.setText(currentEvent.getVenue());
}

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

}

static class ViewHolderEvents extends RecyclerView.ViewHolder{
    private TextView DateTextView;
    private TextView displayName;
    private TextView Venue;

    public ViewHolderEvents(View itemView){
        super(itemView);
        DateTextView = (TextView) itemView.findViewById(R.id.DateTextView);
        displayName = (TextView) itemView.findViewById(R.id.displayName);
        Venue = (TextView) itemView.findViewById(R.id.Venue);
    }
}

}

这部分来自我的片段类：

 public void sendRequest(){
    // Formulate the request and handle the response.
    JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET,
            getRequestUrl(),(String)null,
            new Response.Listener<JSONObject>() {

                @Override
                public void onResponse( JSONObject response) {
                   listEvents= parseJSONResponse(response);
                    adapterEvents.setListEvents(listEvents);
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    // Handle error
                }
            });

    requestQueue.add(request);
}

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_events, container,false);

    recyclerView = (RecyclerView)view.findViewById(R.id.List);
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
    adapterEvents = new AdapterEvents(getActivity());
    recyclerView.setAdapter(adapterEvents);


    return view;
}

我已经在这几天了，这有点令人沮丧，因为这是我的项目将在一周内完成。任何形式的帮助将不胜感激。提前谢谢。

RecyclerView没有填充片段

0 个答案: