Adding Mp3 File On Recyclerview

Hi I create arecyclerview apps. when I click an item it shows text and image but I want to add r.raw.b mp3 file as a third item. How could I do it? here is detailed activity. How

Solution 1:

public class PlaylistActivity extends AppCompatActivity {

privateRecyclerView recyclerView;
privateSongsAdapter songsAdapter;
SongsManager songsManager;
StringMEDIA_PATH = Environment.getExternalStorageDirectory() + "";
ArrayList<HashMap<String, String>> songList=newArrayList<>();

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_playlist);
    recyclerView=(RecyclerView)findViewById(R.id.playlistactivityrecyclerview);
    songsManager=newSongsManager();
 songList =songsManager.getPlayList(MEDIA_PATH);
    songsAdapter=newSongsAdapter(songList);
    recyclerView.setLayoutManager(newLinearLayoutManager(getApplicationContext()));
    recyclerView.setAdapter(songsAdapter);
    Toast.makeText(getApplicationContext(),"Hi",Toast.LENGTH_LONG).show();
}

}

Solution 2:

public class SongsManager {

publicArrayList<HashMap<String, String>> getPlayList(String rootPath) {
    ArrayList<HashMap<String, String>> fileList = newArrayList<>();

    try {
        File rootFolder = newFile(rootPath);
        File[] files = rootFolder.listFiles(); //here you will get NPE if directory doesn't contains  any file,handle it like this.for (File file : files) {
            if (file.isDirectory()) {
                if (getPlayList(file.getAbsolutePath()) != null) {
                    fileList.addAll(getPlayList(file.getAbsolutePath()));
                } else {
                    break;
                }
            } elseif (file.getName().endsWith(".mp3")) {
                HashMap<String, String> song = newHashMap<>();
                song.put("file_path", file.getAbsolutePath());
                song.put("file_name", file.getName());
                fileList.add(song);
            }
        }
        return fileList;
    } catch (Exception e) {
        returnnull;
    }
}

}