gradle SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(context); File mediaFile = new File("/path/to/media.mp4"); Uri mediaUri = Uri.fromFile(mediaFile); DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(context, "ExoPlayerDemo"); MediaSource mediaSource = new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mediaUri); player.prepare(mediaSource); player.setPlayWhenReady(true); player.addListener(new Player.EventListener() { @Override public void onPlayerStateChanged(boolean playWhenReady, int playbackState) { } @Override public void onPlayerError(ExoPlaybackException error) { } });