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Minimal MediaSessionCompat needed to get RemoteControlClient to appear
package com.example.remotecontrolclient;
import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.media.AudioManager;
import android.os.IBinder;
import android.support.v4.media.MediaMetadataCompat;
import android.support.v4.media.session.MediaSessionCompat;
import android.support.v4.media.session.PlaybackStateCompat;
public class PlayerService extends Service {
private MediaSessionCompat mediaSession;
@Override
public void onCreate() {
super.onCreate();
ComponentName receiver = new ComponentName(getPackageName(), RemoteReceiver.class.getName());
mediaSession = new MediaSessionCompat(this, "PlayerService", receiver, null);
mediaSession.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
mediaSession.setPlaybackState(new PlaybackStateCompat.Builder()
.setState(PlaybackStateCompat.STATE_PAUSED, 0, 0)
.setActions(PlaybackStateCompat.ACTION_PLAY_PAUSE)
.build());
mediaSession.setMetadata(new MediaMetadataCompat.Builder()
.putString(MediaMetadataCompat.METADATA_KEY_ARTIST, "Test Artist")
.putString(MediaMetadataCompat.METADATA_KEY_ALBUM, "Test Album")
.putString(MediaMetadataCompat.METADATA_KEY_TITLE, "Test Track Name")
.putLong(MediaMetadataCompat.METADATA_KEY_DURATION, 10000)
.putBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART,
BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
.build());
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audioManager.requestAudioFocus(new AudioManager.OnAudioFocusChangeListener() {
@Override
public void onAudioFocusChange(int focusChange) {
// Ignore
}
}, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
mediaSession.setActive(true);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (mediaSession.getController().getPlaybackState().getState() == PlaybackStateCompat.STATE_PLAYING) {
mediaSession.setPlaybackState(new PlaybackStateCompat.Builder()
.setState(PlaybackStateCompat.STATE_PAUSED, 0, 0.0f)
.setActions(PlaybackStateCompat.ACTION_PLAY_PAUSE).build());
} else {
mediaSession.setPlaybackState(new PlaybackStateCompat.Builder()
.setState(PlaybackStateCompat.STATE_PLAYING, 0, 1.0f)
.setActions(PlaybackStateCompat.ACTION_PLAY_PAUSE).build());
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
super.onDestroy();
mediaSession.release();
}
}
package com.example.remotecontrolclient;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.view.KeyEvent;
public class RemoteReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_MEDIA_BUTTON.equals(intent.getAction())) {
final KeyEvent event = intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event != null && event.getAction() == KeyEvent.ACTION_DOWN) {
switch (event.getKeyCode()) {
case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
context.startService(new Intent(context, PlayerService.class));
break;
}
}
}
}
}
@ishaan-khan
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I have implemented the above example but it does not seem to show anything on the lockscreen. I am receiving the mediasession callbacks but the nothings seems to show up on the lock screen. Any ideas what is going wrong?
FYI: I am using support library 25.1.0

@nebular
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nebular commented Apr 17, 2017

I am using this in an Activity and successfully receive the media buttons. However, in the lock screen nothing is displayed (even though the activity is in the background and with the mediaplayer active). Does the lockscreen functionality require a service?

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ghost commented May 11, 2017

How can I add SongList to the Queue of the session from activity? I can not see any kind of post regarding it.
I tried

mediaSessionCompat = MediaSessionCompat.fromMediaSession(mainActivity,mediaBrowserCompat.getSessionToken());
mediaSessionCompat.setQueue(queueList);

gives an error mediaSession is not a valid MediaSession object

@gregko
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gregko commented Aug 31, 2017

I created a trivial working app project from this Gist at https://github.com/gregko/PlayerServiceSample. In the LogCat output one can see a message when a media button is pressed on a headset, when running on Android 5.x through 7.x. However it fails completely on Android 8 "Oreo", which final build Google just released. Would appreciate any hints on how to make this work under "Oreo", thanks!

@mehulTank
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i am getting same issue i have created one app in that one bluetooth device is bind with phone and according to event its working fine in below oreo but in that oreo not getting any action event if any one idea help me to solve out

@pavelpoley
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I cannot change to "play" button, the button always show "pause", if i change to state to paused the playback screen not showing anything

This code not show anything
mediaSession.setPlaybackState(new PlaybackStateCompat.Builder()
.setState(PlaybackStateCompat.STATE_PAUSED, 0, 0.0f)
.setActions(PlaybackStateCompat.ACTION_PLAY_PAUSE).build());

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