LoaderManager doesn't triggered from subclass

Question

I have My MainActivity which simply implement LoaderManager :

public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor>

And inside the overridden methods I create a new adapter for RecycleView e.g:

@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
    return NYTLoader.newNYTInstance(this);
}

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    NYTAdapter adapter = new NYTAdapter(cursor, this);
    adapter.setHasStableIds(true);
    mRecyclerView.setAdapter(adapter);
    int columnCount = getResources().getInteger(R.integer.list_column_count);
    StaggeredGridLayoutManager sglm =
            new StaggeredGridLayoutManager(columnCount, StaggeredGridLayoutManager.VERTICAL);
    mRecyclerView.setLayoutManager(sglm);
}

@Override
public void onLoaderReset(Loader<Cursor> loader) {
    mRecyclerView.setAdapter(null);
}

Now inside My NYTAdapter I again implemented LoaderManager :

public class NYTAdapter extends RecyclerView.Adapter<NYTAdapter.ViewHolder> implements LoaderManager.LoaderCallbacks<Cursor>

To create another another adapter:

@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
    Log.d(TAG, "onCreateLoader: ");
    return WeatherLoader.newAllWeatherInstance(context);
}

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    this.cursor = cursor;

    Log.d(TAG, "onLoadFinished: ");
    WeatherAdapter adapter = new WeatherAdapter(cursor, context);
    adapter.setHasStableIds(true);
    mRecyclerView.setAdapter(adapter);
    int columnCount = context.getResources().getInteger(R.integer.list_column_count);
    StaggeredGridLayoutManager sglm =
            new StaggeredGridLayoutManager(columnCount, StaggeredGridLayoutManager.HORIZONTAL);
    mRecyclerView.setLayoutManager(sglm);

}

@Override
public void onLoaderReset(Loader<Cursor> loader) {
    mRecyclerView.setAdapter(null);
}

But the problem that, The overridden methods inside NYTAdapter didn't triggered, I don't know why?

Answer 1

All you have to do is call getLoaderManager.initLoader on your activity or your fragment.