PopularMovies

MainActivity.java

package com.example.news.androidp1;

import android.content.Intent;
import android.os.AsyncTask;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.AsyncTaskLoader;
import android.support.v4.content.Loader;
import android.support.v4.text.TextUtilsCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<String> {
    private static final String TAG = "RecyclerViewExample";
    private List<MovieItem> movieList;
    private RecyclerView mRecyclerView;
    private MyRecyclerViewAdapter adapter;
    private ProgressBar progressBar;
    String key = "";
    private static final int MOVIE_LOADER_ID = 0;
    private static final String QUERY_URL_EXTRA = "query";
    Integer result = 0;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
        mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));
        progressBar = (ProgressBar) findViewById(R.id.progress_bar);
        String url = "https://api.themoviedb.org/3/movie/upcoming?api_key=" + key;
        Bundle queryBundle = new Bundle();
        queryBundle.putString(QUERY_URL_EXTRA, url);
        //  new DownloadTask().execute(url);
        LoaderManager loaderManager = getSupportLoaderManager();
        Loader<String> movieLoader = loaderManager.getLoader(MOVIE_LOADER_ID);
        if (movieLoader == null) {
            Log.e("InitLoader","true");
            loaderManager.initLoader(MOVIE_LOADER_ID, queryBundle, this).forceLoad();
        } else {
            loaderManager.restartLoader(MOVIE_LOADER_ID, queryBundle, this);
        }
    }


    @Override
    public Loader<String> onCreateLoader(int id, final Bundle args) {

        return new AsyncTaskLoader<String>(this) {

            @Override
            protected void onStartLoading() {
                if (args == null) {
                    Log.e("args","null");
                    return;
                }
                Log.e("onStartLoading","true");
                progressBar.setVisibility(View.VISIBLE);
            }

            @Override
            public String loadInBackground() {
                String movieUrl = args.getString(QUERY_URL_EXTRA);
                Log.e("MovieURL",movieUrl);
                if (movieUrl == null || TextUtils.isEmpty(movieUrl)) {
                    return null;
                }
                try {
                    URL newUrl = new URL(movieUrl);
                    HttpURLConnection urlConnection;

                    urlConnection = (HttpURLConnection) newUrl.openConnection();
                    int statusCode = urlConnection.getResponseCode();


                    if (statusCode == 200) {
                        BufferedReader r = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
                        StringBuilder response = new StringBuilder();
                        String line;
                        while ((line = r.readLine()) != null) {
                            response.append(line);
                        }

                        String resp = response.toString();
                        try {
                            JSONObject response1 = new JSONObject(resp);
                            JSONArray posts = response1.optJSONArray("results");
                            movieList = new ArrayList<>();

                            for (int i = 0; i < posts.length(); i++) {
                                JSONObject post = posts.optJSONObject(i);
                                MovieItem item = new MovieItem();
                                item.setThumbnail(post.optString("poster_path"));
                                item.setTitle(post.optString("title"));
                                item.setRelease_Date(post.optString("release_date"));
                                item.setPlot(post.optString("overview"));
                                item.setVote(post.optString("vote_average"));


                                movieList.add(item);
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                        result = 1;
                    } else {
                        result = 0;
                    }
                } catch (Exception e) {
                    Log.d(TAG, e.getLocalizedMessage());
                    return null;
                }
                return movieUrl;
            }
        };
    }

    public void onLoadFinished(Loader<String> loader, String data) {
        progressBar.setVisibility(View.GONE);
        Log.e("OnLoadFinished", "true");
        if (result == 1) {
            adapter = new MyRecyclerViewAdapter(MainActivity.this, movieList);
            mRecyclerView.setAdapter(adapter);
            adapter.setOnItemClickListener(new OnItemClickListener() {
                @Override
                public void onItemClick(MovieItem item) {

                    Intent intent = new Intent(MainActivity.this, DetailsActivity.class);
                    intent.putExtra("title", item.getTitle());
                    intent.putExtra("image", item.getThumbnail());
                    intent.putExtra("releasedate", item.getRelease_date());
                    intent.putExtra("plot", item.getPlot());
                    intent.putExtra("vote", item.getVote());
                    startActivity(intent);

                }
            });

        } else {
            Toast.makeText(MainActivity.this, "Failed to fetch data!", Toast.LENGTH_SHORT).show();
        }
    }


    public void onLoaderReset(Loader<String> loader) {

    }


    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);
        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.popular:
                String url = "https://api.themoviedb.org/3/movie/popular?api_key=" + key;
                // new DownloadTask().execute(url);

                return true;
            case R.id.rating:
                String url1 = "https://api.themoviedb.org/3/movie/top_rated?api_key=" + key;
                // new DownloadTask().execute(url1);

            default:
                return super.onOptionsItemSelected(item);
        }
    }
}