Eche un vistazo a la clase MediaPlayer junto con OnCompletionListener :

Harías algo como:

 int playListPos = 0; // declare this outside the button click probably as a global variable (so we can access it and increment in the on click listener of the button // the below code should go inside the button click String url = videolist.get(playListPos); // your URL here MediaPlayer mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioAttributes( AudioAttributes.Builder() .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC) .setUsage(AudioAttributes.USAGE_MEDIA) .build() ); mediaPlayer.setDataSource(url); mediaPlayer.prepare(); // might take long! (for buffering, etc) mediaPlayer.setOnCompletionListener(new OnCompletionListener() { // this will be called every time a file is finished playing if (videolist.size() < playListPos) { // let's see if there is more files to play mediaPlayer.setDataSource(videolist.get(playlistPos)); mediaPlayer.prepare(); mediaPlayer.start(); playListPos++; } else { // we played until the end. reset to 0 for when button is clicked again to restart from the beginning playListPos = 0; } }); mediaPlayer.start();

Aquí está la solución que satisface 3 condiciones:

• Cuando el usuario hace clic en el botón Inicio por primera vez, la aplicación reproducirá la lista de videos uno tras otro

• Cuando el usuario haga clic en el botón Inicio por segunda vez, la aplicación reproducirá el primer video en la lista de videos

• Suelta MediaPlayer cuando la aplicación pasa a segundo plano

MainActivity.java

 public class MainActivity extends AppCompatActivity { private MediaPlayer mediaPlayer; private List<String> videolist; private int currentPlayingPosition; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_activity); videolist = new ArrayList<>(); videolist.add("http://muurl.com/abc/song1.mp3"); videolist.add("http://muurl.com/abc/song2.mp3"); videolist.add("http://muurl.com/abc/song3.mp3"); // User click this button to play video in video list Button buttonPlayVideoList = findViewById(R.id.buttonPlayVideoList); buttonPlayVideoList.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { playVideoList(); } }); } private void playVideoList() { if (mediaPlayer == null) { mediaPlayer = new MediaPlayer(); mediaPlayer.setLooping(false); mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { mediaPlayer.start(); } }); mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { ++currentPlayingPosition; if (currentPlayingPosition < videolist.size()) { playVideoAtPosition(currentPlayingPosition); } } }); } currentPlayingPosition = 0; playVideoAtPosition(currentPlayingPosition); } private void playVideoAtPosition(int position) { try { mediaPlayer.reset(); mediaPlayer.setDataSource(videolist.get(position)); mediaPlayer.prepareAsync(); } catch (IOException e) { e.printStackTrace(); } } @Override protected void onStop() { // Release media player when app goes to background if (mediaPlayer != null) { mediaPlayer.stop(); mediaPlayer.release(); } super.onStop(); } }