具有集合的小部件，如何在从Internet加载数据后更新RemoteView？

Question

我正在学习使用带有集合的小部件。我正在异步加载来自互联网的分数，在加载数据后我想更新视图但是，我的代码跳过更新视图部分。我已经尝试了几件事情，但它并没有等待异步完成它会在列表填充之前调用其他回调方法。

WidgetDataProvider.class

public class WidgetDataProvider implements RemoteViewsService.RemoteViewsFactory {

List<SportScores> mSportScores;

Context mContext = null;

public WidgetDataProvider(Context context, Intent intent) {
    mContext = context;
    mSportScores = new ArrayList<>();

}

@Override
public void onCreate() {
    initData();
    Log.i(FetchServiceConstants.WIDGET, "SPORT SCORES SIZE = " + mSportScores.size());

}

@Override
public void onDataSetChanged() {
    initData();
}

@Override
public void onDestroy() {

}

@Override
public int getCount() {
    return mSportScores.size();
}

@Override
public RemoteViews getViewAt(int position) {

    Log.i(FetchServiceConstants.WIDGET, "GET VIEW AT");

    RemoteViews mRemoteViews = new RemoteViews(mContext.getPackageName(),
        R.layout.football_scores_widget);

    mRemoteViews.setTextViewText(R.id.home_name_widget,
        mSportScores.get(position).getHomeName());

    mRemoteViews.setTextViewText(R.id.away_name_widget, mSportScores.get(position).getAwayName());
    mRemoteViews.setTextViewText(R.id.score_textview_widget, mSportScores.get(position).getScore());
    mRemoteViews.setImageViewBitmap(R.id.away_crest_widget, BitmapFactory.decodeResource(
        mContext.getResources(), Utilies.getTeamCrestByTeamName(mSportScores.get(position).getAwayName())
    ));

    mRemoteViews.setImageViewBitmap(R.id.home_crest_widget, BitmapFactory.decodeResource(
        mContext.getResources(), Utilies.getTeamCrestByTeamName(mSportScores.get(position).getHomeName())
    ));

    mRemoteViews.setTextColor(R.id.home_name_widget, Color.BLACK);
    mRemoteViews.setTextColor(R.id.score_textview_widget, Color.BLACK);
    mRemoteViews.setTextColor(R.id.data_textview_widget, Color.BLACK);
    mRemoteViews.setTextColor(R.id.away_name_widget, Color.BLACK);

//        mRemoteViews.setOnClickPendingIntent(R.id.list_item_layout_widget, pendingIntent);
    return mRemoteViews;
}

@Override
public RemoteViews getLoadingView() {
    return null;
}

@Override
public int getViewTypeCount() {
    return 1;
}

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

@Override
public boolean hasStableIds() {
    return false;
}

private void initData() {
    mSportScores.clear();

    new async().execute();

    Log.i(FetchServiceConstants.WIDGET, "intit DATA ");
}

private Cursor getTodaysScores() {
    Log.i(FetchServiceConstants.WIDGET, "todays scores");
    return mContext.getContentResolver().query(
        DatabaseContract.scores_table.buildScoreWithDate(),
        null,
        null,
        new String[]{PagerFragment.getDate(4)},
        null);
}

private void addScoresToList(Cursor scoreCursor) {
    Log.i(FetchServiceConstants.WIDGET, "Loggint info");

    if (scoreCursor == null) {
        Log.i(FetchServiceConstants.WIDGET, "cursor = null");
    } else {
        Log.i(FetchServiceConstants.WIDGET, scoreCursor.getCount() + "");
    }

    scoreCursor.moveToFirst();
    while (!scoreCursor.isAfterLast()) {

        SportScores newSportScore = new SportScores(
            scoreCursor.getString(scoresAdapter.COL_HOME),
            scoreCursor.getString(scoresAdapter.COL_AWAY),
            Utilies.getScores(
                scoreCursor.getInt(scoresAdapter.COL_HOME_GOALS),
                scoreCursor.getInt(scoresAdapter.COL_AWAY_GOALS))
        );

        mSportScores.add(newSportScore);
    }
}

private void update_scores() {
    Intent service_start = new Intent(mContext, myFetchService.class);
    mContext.startService(service_start);
}

private class async extends AsyncTask<Void, Void, Void> {

    @Override
    protected Void doInBackground(Void... params) {
        update_scores();
        addScoresToList(getTodaysScores());
        Log.i(FetchServiceConstants.WIDGET, "in back");
        return null;
    }

    @Override
    protected void onPostExecute(Void aVoid) {

     //update remote views after scores have been updated
     //NOT SURE WHAT TODO HERE
    }
}
}

WidgetService.class

public class WidgetService extends RemoteViewsService {

@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {

    WidgetDataProvider dataProvider = new WidgetDataProvider(
        getApplicationContext(), intent);
    return dataProvider;
}
}

FootballScoresWidget.class

public class FootballScoresWidget extends AppWidgetProvider {

@Override
public void onReceive(Context context, Intent intent) {
    super.onReceive(context, intent);
}

public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {

    for (int widgetId : appWidgetIds) {
        RemoteViews mView = initViews(context, appWidgetManager, widgetId);
        appWidgetManager.updateAppWidget(widgetId, mView);
        Log.i(FetchServiceConstants.WIDGET, "ON UPDATE ");
    }

    super.onUpdate(context, appWidgetManager, appWidgetIds);

}

@SuppressWarnings("deprecation")
private RemoteViews initViews(Context context,
                              AppWidgetManager widgetManager, int widgetId) {

    RemoteViews mView = new RemoteViews(context.getPackageName(),
        R.layout.football_widget_list);

    Intent intent = new Intent(context, WidgetService.class);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);

    intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
    Log.i(FetchServiceConstants.WIDGET, "intit views ");
    mView.setRemoteAdapter(widgetId, R.id.widgetCollectionList, intent);

    return mView;
}
}

如何在加载数据后更新小部件列表视图，或者有更好的方法来完成我想要做的事情？