Ggtcf

I'm trying to use a LoaderCallbacks (imported from android.app.LoaderManager) on a fragment but when I completed all the coding and tried to run it, it is giving me an error saying

java.lang.ClassCastException: _.MovieDataCollection cannot be cast to
java.util.ArrayList at
_.Detailed.CastFragment.onLoadFinished(CastFragment.java:34)

LoaderManager Implementation:

public class CastFragment extends Fragment implements LoaderManager.LoaderCallbacks<ArrayList<MovieDataCollection>> {

Inside onCreateView initialization of Loader:

LoaderManager loaderManager = getActivity().getLoaderManager();
 loaderManager.initLoader(1, null, this);

Inside onCreateLoader of Loader:

@Override
public Loader<ArrayList<MovieDataCollection>> onCreateLoader(int i, Bundle bundle) 
 progressBar.setVisibility(View.VISIBLE);
 return new WorkerCastThread(getContext(), String.valueOf(movieId));

Inside onLoadFinished of Loader:

@Override
public void onLoadFinished(Loader<ArrayList<MovieDataCollection>> loader, ArrayList<MovieDataCollection> movieDataCollections) 
 if (movieDataCollections == null) 
 showErrorMessage();
 else 
 showData();
 ArrayList<String> imagePath = new ArrayList<>();
 for (int i = 0; i < movieDataCollections.size(); i++) 
 imagePath.add(movieDataCollections.get(i).getPoster_path());
 
 castAdapter = new CastAdapter(movieDataCollections);
 recyclerView.setAdapter(castAdapter);
 recyclerView.setHasFixedSize(true);
 
 progressBar.setVisibility(View.INVISIBLE);

Inside Background worker thread AsyncTaskLoader:

public class WorkerCastThread extends AsyncTaskLoader<ArrayList<MovieDataCollection>> 

private final String movieId;

public WorkerCastThread(Context context, String movieId) 
 super(context);
 this.movieId = movieId;


@Override
protected void onStartLoading() 
 forceLoad();


@Override
public ArrayList<MovieDataCollection> loadInBackground() 
 ArrayList<MovieDataCollection> movieDataCollection = null;
 NetworkUtils networkUtils = null;
 if (movieId != null) 
 networkUtils = new NetworkUtils(movieId);
 
 if (networkUtils != null) 
 movieDataCollection = networkUtils.fetchDataCredits(movieId);

 
 return movieDataCollection;

MovieDataCollection signature:

public class MovieDataCollection implements Serializable 

What I feel because MovieDataCollection implements Serializable, that's why it is happening but in MainActicity the same LoaderManager implementation is used and it works fine and loads data properly without any errors.

MainActivity class:

public class MainActivity extends AppCompatActivity implements MoviesAdapter.MoviesAdapterOnClickHandler, LoaderManager.LoaderCallbacks<ArrayList<MovieDataCollection>> {