volley- How do I return the ArrayList from OnResponse Method In Volley

Question

I am using volley to parse the Movie Details from a REST api and I am saving the parsed Data in an Arraylist of objects called detailsMovies. But I can\'t access the ArrayLi

Answer 1

Define an Interface in your class and implement that.
So Simple trick here is interface with callback.

public class MovieDetailsActivity extends AppCompatActivity { 
TextView movieIdText;
private VolleySingleton volleySingleton;
private RequestQueue mRequestQueue;
private ArrayList detailsMovies = new ArrayList<>();

@Override 
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_movie_details);
    Intent i = getIntent();
    String movieId = i.getExtras().getString("movieId");
    volleySingleton = VolleySingleton.getsInstance();
    mRequestQueue = VolleySingleton.getmRequestQueue();
    parseMovieDetails(new CallBack() {
        @Override
        public void onSuccess(ArrayList detailsMovies) {
          // Do Stuff
        }

        @Override
        public void onFail(String msg) {
            // Do Stuff
        }
    }); 

} 


public void  parseMovieDetails(final CallBack onCallBack){ 



    JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, getUrl(100), new Response.Listener() {
        @Override 
        public void onResponse(JSONObject response) {
            MovieDetails movieDetails = new MovieDetails();
            if (response == null || response.length() == 0) {
                Toast.makeText(getApplicationContext(), "Null Object", Toast.LENGTH_LONG).show();
            } 

            try { 

                JSONObject movieData = response.getJSONObject("data");
                JSONObject movieDetailsObject = movieData.getJSONObject(Keys.EndPointMovieDetails.KEYS_MOVIE);
                String movieTitle = movieDetailsObject.getString(Keys.EndPointMovieDetails.KEYS_TITLE_LONG);
                long movieRating = movieDetailsObject.getInt(Keys.EndPointMovieDetails.KEYS_RATING);
                String movieSynopsis = movieDetailsObject.getString(Keys.EndPointMovieDetails.KEYS_DESCRIPTION);
                String moviePosterUrl = movieDetailsObject.getString(Keys.EndPointMovieDetails.KEYS_COVER);
                String movieYoutubeId = movieDetailsObject.getString(Keys.EndPointMovieDetails.KEY_YOUTUBE_ID);
                movieDetails.setTitle(movieTitle);
                movieDetails.setRating(movieRating);
                movieDetails.setSummary(movieSynopsis);
                movieDetails.setUrlThumbnail(moviePosterUrl);
                movieDetails.setYoutube_id(movieYoutubeId);
                detailsMovies.add(movieDetails);

                JSONArray torrentDownloadLinks = movieDetailsObject.getJSONArray(Keys.EndPointMovieDetails.KEYS_TORRENTS);
                for(int i=0;i detailsMovies);

    void onFail(String msg);
}