Develop Reference

How to get duration of audio from service and set to seekbar item in adapter?

I am trying to play an audio using service and update seekbar item in adapter. But I am unable to get duration of audio from service. Also when scrolling recyclerview, more than one item view is updated instead of updating currently playing seekbar item. I have tried below code.
public class LocalService extends Service {
boolean mBound = false;
private final IBinder mBinder = new LocalBinder();
private String path = "";
private int timer;
private static MediaPlayer mediaPlayer = new MediaPlayer();
// Random number generator
/**
* Class used for the client Binder. Because we know this service always
* runs in the same process as its clients, we don't need to deal with IPC.
*/
public class LocalBinder extends Binder {
public LocalService getService() {
// Return this instance of LocalService so clients can call public methods
return LocalService.this;
}
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
/**
* method for clients
*/
public int getTotalTime() {
return mediaPlayer.getDuration();
}
public int getDuration() {
// Log.v("player duration",timer+"");
try {
if (mediaPlayer != null && mediaPlayer.isPlaying()) {
Log.v("playing", (mediaPlayer.getCurrentPosition() / 1000) + "");
return mediaPlayer.getCurrentPosition() / 1000;
} else {
//Log.v("not playing", (mediaPlayer.getCurrentPosition() / 1000) + "");
return 0;
}
}catch (IllegalStateException i)
{
i.printStackTrace();
return 0;
}
catch (Exception e)
{
e.printStackTrace();
return 0;
}
}
#Override
public void onCreate() {
super.onCreate();
try {
mediaPlayer = new MediaPlayer();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setAudio(String path)
{
try {
mediaPlayer.setDataSource(path);
} catch (IOException e) {
e.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
}
public void playAudio() {
Log.v("audio path", path);
try {
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.prepareAsync();
mediaPlayer.start();
timer=mediaPlayer.getDuration();
Log.v("total timer1",timer+"");
}
});
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
timer=0;
mediaPlayer.stop();
mediaPlayer.reset();
//mediaPlayer.release();
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
#Override
public void unbindService(ServiceConnection conn) {
super.unbindService(conn);
mediaPlayer.reset();
mediaPlayer.release();
}
#Override
public void onDestroy() {
super.onDestroy();
mediaPlayer.reset();
mediaPlayer.release();
}
Service is started from adapter constructor.
Intent intent = new Intent(mContext, LocalService.class);
mContext.bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
player item click in recycler adpater
vhItemHolder.playPauseImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
currentlyPlayingPosition = position;
if (mBound) {
Log.v("service","bound");
//Make sure you update Seekbar on UI thread
mService.setAudio(audioDirectory+messageArrayList.get(position).getmMediaValue());
mPlayer=new MediaPlayer();
try {
mPlayer.setDataSource(audioDirectory+messageArrayList.get(position).getmMediaValue());
mPlayer.prepareAsync();
vhItemHolder.seekBar.setMax(mPlayer.getDuration());
} catch (IOException e) {
e.printStackTrace();
}
mService.playAudio();
Log.v("duration",(mService.getTotalTime())+"");
vhItemHolder.seekBar.setMax(mService.getTotalTime());
mHandler.removeCallbacks(null);
mHandler=new Handler();
((DoctorActivity)mContext).runOnUiThread(new Runnable() {
#Override
public void run() {
num = mService.getDuration();
Log.v("progress",num+"");
vhItemHolder.seekBar.setProgress((num));
vhItemHolder.runningTimerTextView.setText(convertMilliToMinutes((long)mService.getDuration()));
mHandler.postDelayed(this, 50);
}
});
}
else
{
Log.v("service","not bound");
}

Inside your adapter class:
You are making a new object of MediaPlayer (mPlayer) in viewHolder's playPauseImageView's onClickListener and calling setDataSource() method on it which sets data source for this local mPlayer object not to the mediaPlayer object of your LocalService class.
Calling mService.playAudio() and mService.getDuration() methods access your LocalService class' mediaPlayer object for which setDataSource() method is not called yet, hence must be returning wrong duration and unable to play.
You should make a change in your adapter class like below:
vhItemHolder.playPauseImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
currentlyPlayingPosition = position;
if (mBound) {
Log.v("service","bound");
//Make sure you update Seekbar on UI thread
mService.setAudio(audioDirectory+messageArrayList.get(position).getmMediaValue());
mPlayer = mService.mediaPlayer;// or mPlayer = LocalService.mediaPlayer; as being static object.
//rather new MediaPlayer();
try {
mPlayer.setDataSource(audioDirectory+messageArrayList.get(position).getmMediaValue());
mPlayer.prepareAsync();
vhItemHolder.seekBar.setMax(mPlayer.getDuration());
} catch (IOException e) {
e.printStackTrace();
}
mService.playAudio();
Log.v("duration",(mService.getTotalTime())+"");
vhItemHolder.seekBar.setMax(mService.getTotalTime());
mHandler.removeCallbacks(null);
mHandler=new Handler();
((DoctorActivity)mContext).runOnUiThread(new Runnable() {
#Override
public void run() {
num = mService.getDuration();
Log.v("progress",num+"");
vhItemHolder.seekBar.setProgress((num));
vhItemHolder.runningTimerTextView.setText(convertMilliToMinutes((long)mService.getDuration()));
mHandler.postDelayed(this, 50);
}
});
}
else
{
Log.v("service","not bound");
}

Mediaplayer current position is always zero

I am building a simple music app.
Regardless of what I try, I can not get a song to stop in order to play a new song. I tried stop, release, stop, and release together; I created a service; I even tried to use current position to get the position of the MP3 and consider it playing if the position is > 1.
But nothing worked and I am going mad trying to figure this out.
I worked on this for 5 days and have failed at everything I have thrown at it.
I would greatly appreciate any advice and a clear solution.
I am a noob and I am trying very hard to solve my own problems but this one just has me stumped.
import android.app.Service;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import java.io.IOException;
public class MyService extends Service {
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
MediaPlayer mediaplayer;
mediaplayer = new MediaPlayer();
mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
String extRec = intent.getExtras().getString("extRec");
Log.d("My Service", "Received extra: " + extRec);
if (mediaplayer.isPlaying()){
Log.d("My Service is playing ", "yes");
}
else {
Log.d("My Service is playing ", "no");
}
//mediaplayer.stop();
//mediaplayer.release();
try {
final String AudioURL = extRec;
Log.d("My Service audioURL ", AudioURL);
mediaplayer.setDataSource(AudioURL);
mediaplayer.prepare();
Log.d("My Service", "position: " + mediaplayer.getCurrentPosition() );
mediaplayer.start();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return START_STICKY;
}
}

User Media Controller will help you:
public class AudioPlayer extends Activity implements OnPreparedListener, MediaController.MediaPlayerControl{
private static final String TAG = "AudioPlayer";
public static final String AUDIO_FILE_NAME = "audioFileName";
private MediaPlayer mediaPlayer;
private MediaController mediaController;
private String audioFile;
private Handler handler = new Handler();
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.audio_player);
audioFile = this.getIntent().getStringExtra(AUDIO_FILE_NAME);
((TextView)findViewById(R.id.now_playing_text)).setText(audioFile);
mediaPlayer = new MediaPlayer();
mediaPlayer.setOnPreparedListener(this);
mediaController = new MediaController(this);
try {
mediaPlayer.setDataSource(audioFile);
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IOException e) {
Log.e(TAG, "Could not open file " + audioFile + " for playback.", e);
}
}
#Override
protected void onStop() {
super.onStop();
mediaController.hide();
mediaPlayer.stop();
mediaPlayer.release();
}
#Override
public boolean onTouchEvent(MotionEvent event) {
//the MediaController will hide after 3 seconds - tap the screen to make it appear again
mediaController.show();
return false;
}
//--MediaPlayerControl methods----------------------------------------------------
public void start() {
mediaPlayer.start();
}
public void pause() {
mediaPlayer.pause();
}
public int getDuration() {
return mediaPlayer.getDuration();
}
public int getCurrentPosition() {
return mediaPlayer.getCurrentPosition();
}
public void seekTo(int i) {
mediaPlayer.seekTo(i);
}
public boolean isPlaying() {
return mediaPlayer.isPlaying();
}
public int getBufferPercentage() {
return 0;
}
public boolean canPause() {
return true;
}
public boolean canSeekBackward() {
return true;
}
public boolean canSeekForward() {
return true;
}
//--------------------------------------------------------------------------------
public void onPrepared(MediaPlayer mediaPlayer) {
Log.d(TAG, "onPrepared");
mediaController.setMediaPlayer(this);
mediaController.setAnchorView(findViewById(R.id.main_audio_view));
handler.post(new Runnable() {
public void run() {
mediaController.setEnabled(true);
mediaController.show();
}
});
}
}
For good playing feature use Exoplayer

Android - Background audio service force closed

I am developing an audio streaming app for android devices and I have some issues about the handling of background audio service.
The expected behaviour of my app is that the audio source will be played continuously, even if the device is in stand-by mode with the screen off, but sometimes the background audio service is interrupted without any apparent reason.
To fix this problem, I have started the service with the option START_STICKY.
In this way, the service will be restarted even if it is closed for any reason, but now I can't close the service with a force close of the app and sometimes the service it will be restarted even if I want to close it!
Does anyone can suggest me a correct way to handle this job?
Here is my code:
At first I have declared the intent in the MainActivity:
Intent playbackServiceIntent;
Inside the onCreate() method of the MainActivity I have registered the service:
playbackServiceIntent = new Intent(this, BackgroundAudioService.class);
To start the audio service through the play button:
startService(playbackServiceIntent);
To stop the service through the stop button
stopService(playbackServiceIntent);
I have alse overrided the onDestroy() method of the MainActivity:
#Override
public void onDestroy() {
stopService(playbackServiceIntent);
//stopService(new Intent(this,BackgroundAudioService.class));
super.onDestroy();
}
Finally, the BackgroundAudioService class is defined as follow:
public class BackgroundAudioService extends Service implements OnCompletionListener {
public MediaPlayer mediaPlayer;
public WifiLock wifiLock;
PhoneStateListener mPhoneStateListener;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
mediaPlayer = new MediaPlayer(); // raw/s.mp3
mediaPlayer.setOnCompletionListener(this);
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(url);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
wifiLock = ((WifiManager) getSystemService(Context.WIFI_SERVICE))
.createWifiLock(WifiManager.WIFI_MODE_FULL, "mylock");
wifiLock.acquire();
mediaPlayer.setOnBufferingUpdateListener(new OnBufferingUpdateListener() {
public void onBufferingUpdate(MediaPlayer mp, int percent) {
}
});
mPhoneStateListener = new PhoneStateListener()
{
protected boolean mWasPlayingWhenCalled = false;
#Override
public void onCallStateChanged(int state, String incomingNumber)
{
if( state == TelephonyManager.CALL_STATE_RINGING )
{ // Incoming call: Pause music
mediaPlayer.pause();
mWasPlayingWhenCalled = true;
}
else if(state == TelephonyManager.CALL_STATE_IDLE )
{ // Not in call: Play music
if( mWasPlayingWhenCalled )
{
mediaPlayer.start();
mWasPlayingWhenCalled = false;
}
}
else if( state == TelephonyManager.CALL_STATE_OFFHOOK )
{ // A call is dialing, active or on hold
mediaPlayer.pause();
mWasPlayingWhenCalled = true;
}
super.onCallStateChanged(state, incomingNumber);
}
};
TelephonyManager mgr = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
mgr.listen(mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (!mediaPlayer.isPlaying()) {
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
Intent intent = new Intent();
intent.setAction("com.my_app.CUSTOM_INTENT");
sendBroadcast(intent);
}
});
Time t=new Time();
t.setToNow();
}
return START_STICKY;
}
public void onDestroy() {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
wifiLock.release();
mediaPlayer.release();
TelephonyManager mgr1 = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
if(mgr1 != null) {
mgr1.listen(mPhoneStateListener, PhoneStateListener.LISTEN_NONE);
}
Time t=new Time();
t.setToNow();
}
public void onCompletion(MediaPlayer _mediaPlayer) {
stopSelf();
Time t=new Time();
t.setToNow();
}
}

Not able to achieve Gapless audio looping so far on Android

I have tried almost every method but I've failed to achieve gapless audio playback between looping a single track with a duration of 10-15 seconds.
Steps I've tried and failed :
Different audio file formats .mp3 .wav .ogg using
setLooping(true):
MediaPlayer mp1 = MediaPlayer.create(MainActivity.this, R.raw.track1);
mp1.setLooping(true);
mp1.start();
Creating two mediaplayers and looping one after another using
setOnCompletionListenersame failed to loop without gaps.
Using setNextMediaPlayer(nextmp) some how it works but only two loops is possible. We have to prepare and start again after the completion of previous two loops.
mp1.start();
mp1.setNextMediaPlayer(mp2);
Update:
Result of #Jeff Mixon answer:
Mediaplayer looping stops with an error Android.
Jeff Mixon works fine but only for 10 or 20 loops after that, due to some garbage collection issue the Mediaplayers stops immediately leaving the logs as posted below. I'm really kind of stuck here for 2 years. Thanks in advance.
E/MediaPlayer(24311): error (1, -38)
E/MediaPlayer(23256): Error(1,-1007)
E/MediaPlayer(23546): Error (1,-2147483648)

From the test that I have done, this solution works fine, over 150 loops with a 13 seconds 160 kbps MP3 without any problem:
public class LoopMediaPlayer {
public static final String TAG = LoopMediaPlayer.class.getSimpleName();
private Context mContext = null;
private int mResId = 0;
private int mCounter = 1;
private MediaPlayer mCurrentPlayer = null;
private MediaPlayer mNextPlayer = null;
public static LoopMediaPlayer create(Context context, int resId) {
return new LoopMediaPlayer(context, resId);
}
private LoopMediaPlayer(Context context, int resId) {
mContext = context;
mResId = resId;
mCurrentPlayer = MediaPlayer.create(mContext, mResId);
mCurrentPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mCurrentPlayer.start();
}
});
createNextMediaPlayer();
}
private void createNextMediaPlayer() {
mNextPlayer = MediaPlayer.create(mContext, mResId);
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
}
private MediaPlayer.OnCompletionListener onCompletionListener = new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.release();
mCurrentPlayer = mNextPlayer;
createNextMediaPlayer();
Log.d(TAG, String.format("Loop #%d", ++mCounter));
}
};
}
To use LoopMediaPlayer you can just call:
LoopMediaPlayer.create(context, R.raw.sample);

Ugly proof-of-concept code, but you'll get the idea:
// Will need this in the callbacks
final AssetFileDescriptor afd = getResources().openRawResourceFd(R.raw.sample);
// Build and start first player
final MediaPlayer player1 = MediaPlayer.create(this, R.raw.sample);
player1.start();
// Ready second player
final MediaPlayer player2 = MediaPlayer.create(this, R.raw.sample);
player1.setNextMediaPlayer(player2);
player1.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
// When player1 completes, we reset it, and set up player2 to go back to player1 when it's done
mediaPlayer.reset();
try {
mediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mediaPlayer.prepare();
} catch (Exception e) {
e.printStackTrace();
}
player2.setNextMediaPlayer(player1);
}
});
player2.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
// Likewise, when player2 completes, we reset it and tell it player1 to user player2 after it's finished again
mediaPlayer.reset();
try {
mediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mediaPlayer.prepare();
} catch (Exception e) {
e.printStackTrace();
}
player1.setNextMediaPlayer(player2);
}
});
// This loop repeats itself endlessly in this fashion without gaps
This worked for me on an API 19 device and a 5-second 128 kbps MP3. No gaps in the loop.

At least as of KitKat, Mattia Maestrini's Answer (to this question) is the only solution I've found that allows gapless looping of a large (> 1Mb uncompressed) audio sample. I've tried:
.setLooping(true): gives interloop noise or pause even with perfectly trimmed .WAV sample (published bug in Android);
OGG format: frameless format, so better than MP3, but MediaPlayer still emits interloop artifacts; and
SoundPool: may work for small sound samples but large samples cause heap size overflow.
By simply including Maestrini's LoopMediaPlayer class in my project and then replacing my MediaPlayer.create() calls with LoopMediaPlayer.create() calls, I can ensure my .OGG sample is looped seamlessly. LoopMediaPlayer is therefore a commendably practical and transparent solution.
But this transparency begs the question: once I swap my MediaPlayer calls for LoopMediaPlayer calls, how does my instance call MediaPlayer methods such as .isPlaying, .pause or .setVolume? Below is my solution for this issue. Possibly it can be improved upon by someone more Java-savvy than myself (and I welcome their input), but so far I've found this a reliable solution.
The only changes I make to Maestrini's class (aside from some tweaks recommended by Lint) are as marked at the end of the code below; the rest I include for context. My addition is to implement several methods of MediaPlayer within LoopMediaPlayer by calling them on mCurrentPlayer.
Caveat: while I implement several useful methods of MediaPlayer below, I do not implement all of them. So if you expect for example to call .attachAuxEffect you will need to add this yourself as a method to LoopMediaPlayer along the lines of what I have added. Be sure to replicate the original interfaces of these methods (i.e., Parameters, Throws, and Returns):
public class LoopMediaPlayer {
private static final String TAG = LoopMediaPlayer.class.getSimpleName();
private Context mContext = null;
private int mResId = 0;
private int mCounter = 1;
private MediaPlayer mCurrentPlayer = null;
private MediaPlayer mNextPlayer = null;
public static LoopMediaPlayer create(Context context, int resId) {
return new LoopMediaPlayer(context, resId);
}
private LoopMediaPlayer(Context context, int resId) {
mContext = context;
mResId = resId;
mCurrentPlayer = MediaPlayer.create(mContext, mResId);
mCurrentPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mCurrentPlayer.start();
}
});
createNextMediaPlayer();
}
private void createNextMediaPlayer() {
mNextPlayer = MediaPlayer.create(mContext, mResId);
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
}
private final MediaPlayer.OnCompletionListener onCompletionListener = new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.release();
mCurrentPlayer = mNextPlayer;
createNextMediaPlayer();
Log.d(TAG, String.format("Loop #%d", ++mCounter));
}
};
// code-read additions:
public boolean isPlaying() throws IllegalStateException {
return mCurrentPlayer.isPlaying();
}
public void setVolume(float leftVolume, float rightVolume) {
mCurrentPlayer.setVolume(leftVolume, rightVolume);
}
public void start() throws IllegalStateException {
mCurrentPlayer.start();
}
public void stop() throws IllegalStateException {
mCurrentPlayer.stop();
}
public void pause() throws IllegalStateException {
mCurrentPlayer.pause();
}
public void release() {
mCurrentPlayer.release();
mNextPlayer.release();
}
public void reset() {
mCurrentPlayer.reset();
}
}

Something like this should work. Keep two copies of the same file in the res.raw directory. Please note that this is just a POC and not an optimized code. I just tested this out and it is working as intended. Let me know what you think.
public class MainActivity extends Activity {
MediaPlayer mp1;
MediaPlayer mp2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mp1 = MediaPlayer.create(MainActivity.this, R.raw.demo);
mp2 = MediaPlayer.create(MainActivity.this, R.raw.demo2);
mp1.start();
Thread thread = new Thread(new Runnable() {
#Override
public void run() {
int duration = mp1.getDuration();
while (mp1.isPlaying() || mp2.isPlaying()) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
duration = duration - 100;
if (duration < 1000) {
if (mp1.isPlaying()) {
mp2.start();
mp1.reset();
mp1 = MediaPlayer.create(MainActivity.this,
R.raw.demo);
duration = mp2.getDuration();
} else {
mp1.start();
mp2.reset();
mp2 = MediaPlayer.create(MainActivity.this,
R.raw.demo2);
duration = mp1.getDuration();
}
}
}
}
});
thread.start();
}
}

I suggest you to use SoundPool API instead of MediaPlayer.
From the official documentation:
The SoundPool class manages and plays audio resources for
applications.
...
Sounds can be looped by setting a non-zero loop
value. A value of -1 causes the sound to loop forever. In this case,
the application must explicitly call the stop() function to stop the
sound. Any other non-zero value will cause the sound to repeat the
specified number of times, e.g. a value of 3 causes the sound to play
a total of 4 times.
...
Take a look here for a practical example of how to use SoundPool.

In using Mattia Maestrini's answer, I was able to get the audio looping the way I wanted but, since I was using this for Android Auto, discovered that the audio only played over my phones speakers instead of my car speakers. I eventually found this answer which points out a bug which makes it important in this context to use the new MediaPlayer() constructor with the setDataSource method. I was already using Uris in my code so I used that variant, so I'm not 100% sure how important that is, I would assume any of the other setDataSource variants would be sufficient if it matters for your code.
Here's what ultimately ended up working for me:
public class LoopMediaPlayer extends MediaPlayer {
private static final String TAG = LoopMediaPlayer.class.getSimpleName();
private Context mContext = null;
private Uri mMediaUri = null;
private int mCounter = 1;
private MediaPlayer mCurrentPlayer = null;
private MediaPlayer mNextPlayer = null;
private Float mLeftVolume;
private Float mRightVolume;
public static LoopMediaPlayer create(Context context, Uri mediaUri) {
try {
return new LoopMediaPlayer(context, mediaUri);
}
catch (Exception e) {
throw new RuntimeException("Unable to create media player", e);
}
}
private LoopMediaPlayer(Context context, Uri mediaUri) throws IOException {
mContext = context;
mMediaUri = mediaUri;
mCurrentPlayer = new MediaPlayer();
mCurrentPlayer.setDataSource(mContext, mMediaUri);
mCurrentPlayer.prepare();
createNextMediaPlayer();
}
private void createNextMediaPlayer() {
try {
mNextPlayer = new MediaPlayer();
mNextPlayer.setDataSource(mContext, mMediaUri);
if (mLeftVolume != null && mRightVolume != null) {
mNextPlayer.setVolume(mLeftVolume, mRightVolume);
}
mNextPlayer.prepare();
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
}
catch (Exception e) {
Log.e(TAG, "Problem creating next media player", e);
}
}
private MediaPlayer.OnCompletionListener onCompletionListener = new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.release();
mCurrentPlayer = mNextPlayer;
createNextMediaPlayer();
Log.d(TAG, String.format("Loop #%d", ++mCounter));
}
};
#Override
public void prepare() throws IllegalStateException {
// no-op, internal media-players are prepared when they are created.
}
#Override
public boolean isPlaying() throws IllegalStateException {
return mCurrentPlayer.isPlaying();
}
#Override
public void setVolume(float leftVolume, float rightVolume) {
mCurrentPlayer.setVolume(leftVolume, rightVolume);
mNextPlayer.setVolume(leftVolume, rightVolume);
mLeftVolume = leftVolume;
mRightVolume = rightVolume;
}
#Override
public void start() throws IllegalStateException {
mCurrentPlayer.start();
}
#Override
public void stop() throws IllegalStateException {
mCurrentPlayer.stop();
}
#Override
public void pause() throws IllegalStateException {
mCurrentPlayer.pause();
}
#Override
public void release() {
mCurrentPlayer.release();
mNextPlayer.release();
}
#Override
public void reset() {
mCurrentPlayer.reset();
}
}

For some reason, I found that my "OnCompletion" Event was always firing a fraction of second late when attempting to loop an 8-second OGG file. For anyone experiencing this type of delay, try the following.
It is possible to forcibly queue a "nextMediaPlayer" as recommend in previous solutions, by simply posting a delayed Runnable to a Handler for your MediaPlayers and avoiding looping in onCompletion Event altogether.
This performs flawlessly for me with my 160kbps 8-second OGG, min API 16.
Somewhere in your Activity/Service, create a HandlerThread & Handler...
private HandlerThread SongLooperThread = new HandlerThread("SongLooperThread");
private Handler SongLooperHandler;
public void startSongLooperThread(){
SongLooperThread.start();
Looper looper = SongLooperThread.getLooper();
SongLooperHandler = new Handler(looper){
#Override
public void handleMessage(Message msg){
//do whatever...
}
}
}
public void stopSongLooperThread(){
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2){
SongLooperThread.quit();
} else {
SongLooperThread.quitSafely();
}
}`
...start the Thread, declare and set up your MediaPlayers...
#Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
startSongLooperThread();
activeSongResID = R.raw.some_loop;
activeMP = MediaPlayer.create(getApplicationContext(), activeSongResID);
activeSongMilliseconds = activeMP.getDuration();
queuedMP = MediaPlayer.create(getApplicationContext(),activeSongResID);
}
#Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
stopSongLooperThread();
activeMP.release();
queuedMP.release();
activeMP = null;
queuedMP = null;
}
...create a Method for swapping your MediaPlayers...
private void swapActivePlayers(){
Log.v("SongLooperService","MediaPlayer swap started....");
queuedMP.start();
//Immediately get the Duration of the current track, then queue the next swap.
activeSongMilliseconds = queuedMP.getDuration();
SongLooperHandler.postDelayed(timedQueue,activeSongMilliseconds);
Log.v("SongLooperService","Next call queued...");
activeMP.release();
//Swap your active and queued MPs...
Log.v("SongLooperService","MediaPlayers swapping....");
MediaPlayer temp = activeMP;
activeMP = queuedMP;
queuedMP = temp;
//Prepare your now invalid queuedMP...
queuedMP = MediaPlayer.create(getApplicationContext(),activeSongResID);
Log.v("SongLooperService","MediaPlayer swapped.");
}
...create Runnables to post to your thread...
private Runnable startMP = new Runnable(){
public void run(){
activeMP.start();
SongLooperHandler.postDelayed(timedQueue,activeSongMilliseconds);
}
};
private Runnable timedQueue = new Runnable(){
public void run(){
swapActivePlayers();
}
};
In your Service's onStartCommand() or somewhere in your Activity, start the MediaPlayer...
...
SongLooperHandler.post(startMP);
...

I have tried everything suggested here and elsewhere and the only thing that worked is ExoPlayer instead of the Music class. You can access your libgdx files with:
Uri.parse("file:///android_asset/" + path)
You'll also need platform specific code.

CODE-REad's LoopMediaPlayer example is great, but if you use the new MediaPlayer() method of creating the MediaPlayer (like I do for using File or AssetFileDescriptor datasources) rather than the MediaPlayer.Create() method then you must be careful to
Call the setOnCompletionListener method AFTER .start() or it will
not fire.
Fully .prepare() or .prepareAsync() the mNextPlayer before
calling .setNextMediaPlayer on the mCurrentPlayer or it will fail to
play the mNextPlayer. This means calling .start, setOnCompletionListener, and .setNextMediaPlayer in the onPreparedListener as shown below.
I have modified his code to use the new MediaPlayer() method to create the player and also added the ability to set datasource from AssetFileDescriptor and a File. I hope this saves someone some time.
public class LoopMediaPlayer {
private static final String TAG = LoopMediaPlayer.class.getSimpleName();
private Context mContext = null;
private int mResId = 0;
private int mCounter = 1;
private AssetFileDescriptor mAfd = null;
private File mFile = null;
private MediaPlayer mCurrentPlayer = null;
private MediaPlayer mNextPlayer = null;
public static LoopMediaPlayer create(Context context, int resId) {
return new LoopMediaPlayer(context, resId);
}
public LoopMediaPlayer(Context context, File file){
mContext = context;
mFile = file;
try {
mCurrentPlayer = new MediaPlayer();
mCurrentPlayer.setLooping(false);
mCurrentPlayer.setDataSource(file.getAbsolutePath());
mCurrentPlayer.prepareAsync();
mCurrentPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mCurrentPlayer.start();
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
createNextMediaPlayer();
}
});
} catch (Exception e) {
Log.e("media", e.getLocalizedMessage());
}
}
public LoopMediaPlayer(Context context, AssetFileDescriptor afd){
mAfd = afd;
mContext = context;
try {
mCurrentPlayer = new MediaPlayer();
mCurrentPlayer.setLooping(false);
mCurrentPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mCurrentPlayer.prepareAsync();
mCurrentPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mCurrentPlayer.start();
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
createNextMediaPlayer();
}
});
} catch (Exception e) {
Log.e("media", e.getLocalizedMessage());
}
}
private LoopMediaPlayer(Context context, int resId) {
mContext = context;
mResId = resId;
mCurrentPlayer = MediaPlayer.create(mContext, mResId);
mCurrentPlayer.setLooping(false);
mCurrentPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mCurrentPlayer.start();
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
createNextMediaPlayer();
}
});
mCurrentPlayer.prepareAsync();
}
private void createNextMediaPlayer() {
try{
if(mAfd != null){
mNextPlayer = new MediaPlayer();
mNextPlayer.setDataSource(mAfd.getFileDescriptor(), mAfd.getStartOffset(), mAfd.getLength());
mNextPlayer.prepareAsync();
mNextPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
}
});
}
else if(mFile!=null){
mNextPlayer = new MediaPlayer();
mNextPlayer.setDataSource(mFile.getAbsolutePath());
mNextPlayer.prepareAsync();
mNextPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
}
});
}
else {
mNextPlayer = MediaPlayer.create(mContext, mResId);
mNextPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mCurrentPlayer.setNextMediaPlayer(mNextPlayer);
}
});
}
} catch (Exception e) {
}
}
private final MediaPlayer.OnCompletionListener onCompletionListener = new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.release();
mCurrentPlayer = mNextPlayer;
mCurrentPlayer.setOnCompletionListener(onCompletionListener);
createNextMediaPlayer();
Log.d("LoopMediaPlayer", String.format("Loop #%d", ++mCounter));
}
};
// code-read additions:
public boolean isPlaying() throws IllegalStateException {
return mCurrentPlayer.isPlaying();
}
public void setVolume(float leftVolume, float rightVolume) {
mCurrentPlayer.setVolume(leftVolume, rightVolume);
}
public void start() throws IllegalStateException {
mCurrentPlayer.start();
}
public void stop() throws IllegalStateException {
mCurrentPlayer.stop();
}
public void pause() throws IllegalStateException {
mCurrentPlayer.pause();
}
public void release() {
mCurrentPlayer.release();
mNextPlayer.release();
}
public void reset() {
mCurrentPlayer.reset();
}
}

How to correctly change MediaPlayer audio stream type?

I have a simple mp service to play, pause, resume audio. All works fine.
But, last night I have decided to add a feature for user to route audio to ear-piece or speaker and have been battling with mp.setAudioStreamType().
Problem is that I can't change it while service connected and mp created. I don't want to terminate service and/or unbind and rebind as it would require a lot of refactoring
How do I supposed to change AudioStreamType while playing an audio?
Here is my code:
Player service:
public class PService extends Service {
private MediaPlayer mp = new MediaPlayer();
public static final String PLAYING_FINISHED_MSG = "1";
#Override
public void onCreate() {
super.onCreate();
}
#Override
public void onDestroy() {
mp.stop();
mp.release();
}
private void playSong(String file) {
try {
mp.reset();
mp.setDataSource(file);
mp.setAudioStreamType(MYAPP.getAudioStreamType());
mp.prepare();
mp.start();
mp.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer arg0) {
Intent i = new Intent();
i.setAction(MDService.PLAYING_FINISHED_MSG);
sendBroadcast(i);
}
});
toggle route button onclick
currentlyPlayingFile = file;
currentlyPlayingPhone = phone;
lastDurationBeforePause = mpInterface.getCurrentPosition();
if(MYAPP.getAudioStreamType() == AudioManager.STREAM_MUSIC)
{
MYAPP.setAudioStreamType(AudioManager.STREAM_VOICE_CALL);
recording_player_route_button.setImageResource(R.drawable.route_off);
}
else{
MYAPP.setAudioStreamType(AudioManager.STREAM_MUSIC);
recording_player_route_button.setImageResource(R.drawable.route_on);
}
try {
mpInterface.playFile(file);
player_seekbar.setProgress(0);
player_seekbar.setMax(mpInterface.getDuration());
//seekto last millisecond after switching from/to sepaker
if(seekTo>0)
{
mpInterface.seekTo(seekTo);
}
isPauseButtonPressed = false;
handleSeekBarUpdate.postDelayed(handleSeekBarUpdateJob, 1);
} catch (RemoteException e) {
e.printStackTrace();
}

The MODIFY_AUDIO_SETTINGS permission is needed in the Manifest for this to work.
AudioManager am=(AudioManager)getSystemService(Context.AUDIO_SERVICE);
am.setMode(AudioManager.MODE_NORMAL);
MediaPlayer mp=new MediaPlayer();
Uri ringtoneUri=RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
try
{
mp.setDataSource(getApplicationContext(), ringtoneUri);
mp.setAudioStreamType(AudioManager.STREAM_NOTIFICATION);
mp.prepare();
mp.start();
}
catch(Exception e)
{
//exception caught in the end zone
}