如何将数据从Parse.com显示到android recycler-view？

Question

我正在尝试将数据从Parse.com云提取到我的Android应用程序。这是我自定义适配器的代码：

public class AdvertisingAdapter extends RecyclerView.Adapter<AdvertisingAdapter.TatsViewHolder> {

List<AdvertInfo> data = new ArrayList<>();
private LayoutInflater inflater;

public AdvertisingAdapter(Context context, List<AdvertInfo> data){
    inflater = LayoutInflater.from(context);
    this.data = data;

}

@Override
public TatsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    View view = inflater.inflate(R.layout.single_ad, parent, false);
    TatsViewHolder holder = new TatsViewHolder(view);
    return holder;
}


@Override
public void onBindViewHolder(TatsViewHolder holder, int position) {
    AdvertInfo current = data.get(position);
    holder.daPoster.setText(current.theadvertiser);
    holder.daAdvert.setText(current.theadvert);

}

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

class TatsViewHolder extends RecyclerView.ViewHolder{

    TextView daPoster;
    TextView daAdvert;

    public TatsViewHolder(View itemView) {
        super(itemView);

        daPoster = (TextView)itemView.findViewById(R.id.txtAdvertiser);
        daAdvert = (TextView)itemView.findViewById(R.id.txtAdvert);
    }
}
}

以及我的成员类的代码

public class AdvertInfo {

public String theadvertiser;
public String theadvert;

}

然后我的片段我在这里显示数据是代码

public class ViewAdverts extends android.support.v4.app.Fragment {


private RecyclerView myRecyclerView;
AdvertisingAdapter myAdapter;

public ViewAdverts() {
    // Required empty public constructor
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View layout = inflater.inflate(R.layout.view_adverts, container, false);
    myRecyclerView = (RecyclerView)layout.findViewById(R.id.advert_list);
    myAdapter = new AdvertisingAdapter(getActivity(), getData());
    myRecyclerView.setAdapter(myAdapter);
    myRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));

    return layout;
}

public static List<AdvertInfo> getData(){
    final List<AdvertInfo> myposts = new ArrayList<>();



    ParseQuery<Posts> query = ParseQuery.getQuery(Posts.class);
    query.findInBackground(new FindCallback<Posts>() {
        @Override
        public void done(List<Posts> list, ParseException e) {

            if (e == null){
                for (int i = 0; i < list.size(); i++){
                    AdvertInfo ad = new AdvertInfo();
                    ad.theadvertiser = list.get(i).getString(ParseConstants.ADVERTISER);
                    ad.theadvert = list.get(i).getString(ParseConstants.DESCRIPTION);
                    myposts.add(ad);


                }
            }

        }
    });

        return myposts;
}

}

我试图通过在片段中放置getData方法来调试我获取数据但我不知道为什么我的循环器视图在我运行时显示为空。