Android application to Pause/Resume the music of another music player app

问题

In my Android application, I am playing different mp3 files using the MediaPlayer class.

The user is playing his/her own music with the default music application.

I want to:

1. Pause the music of the default music application.
2. Start playing music from my application.
3. When my music is done playing, my app will resume the user's default music.

I want to pause and resume the music of the default music player from my application.

Is it possible to do this?

回答1:

The following code will pause a default MediaPlayer by sending a broadcast:

AudioManager mAudioManager = (AudioManager) this.getSystemService(Context.AUDIO_SERVICE);    

if (mAudioManager.isMusicActive()) {

    Intent i = new Intent("com.android.music.musicservicecommand");

    i.putExtra("command", "pause");
    YourApplicationClass.this.sendBroadcast(i);
} 

回答2:

// pause
Intent i = new Intent("com.android.music.musicservicecommand");
i.putExtra("command", "pause");
sendBroadcast(i);

// play
Intent i = new Intent("com.android.music.musicservicecommand");
i.putExtra("command", "play");
sendBroadcast(i);

// next
Intent i = new Intent("com.android.music.musicservicecommand");
i.putExtra("command", "next");
sendBroadcast(i);

// previous
Intent i = new Intent("com.android.music.musicservicecommand");
i.putExtra("command", "previous");
sendBroadcast(i);

Some more info about available commands:

public static final String SERVICECMD = "com.android.music.musicservicecommand";
public static final String CMDNAME = "command";
public static final String CMDTOGGLEPAUSE = "togglepause";
public static final String CMDSTOP = "stop";
public static final String CMDPAUSE = "pause";
public static final String CMDPLAY = "play";
public static final String CMDPREVIOUS = "previous";
public static final String CMDNEXT = "next";

回答3:

To control currently playing music use this code.

    AudioManager mAudioManager = (AudioManager) c.getSystemService(Context.AUDIO_SERVICE);

if(mode == Config.MUSIC_NEXT) {
                KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_NEXT);
                mAudioManager.dispatchMediaKeyEvent(event);
            }else if(mode == Config.MUSIC_PLAY){
                KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PLAY);
                mAudioManager.dispatchMediaKeyEvent(event);
            }
            else if(mode == Config.MUSIC_PREV){
                KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PREVIOUS);
                mAudioManager.dispatchMediaKeyEvent(event);
            }

infact this is the only code that is working for all music apps i used. checked with

• Google play music.
• Apple Music
• OnePlus music app

回答4:

guys,try follow code,it worked for me:

// stop music player
AudioManager am = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
am.requestAudioFocus(null,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);

//resume music player

am.abandonAudioFocus(null);

回答5:

It is working very well for me :

    KeyEvent ke = new KeyEvent(KeyEvent.ACTION_DOWN, 
    KeyEvent.KEYCODE_MEDIA_PAUSE);
    Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);

    // construct a PendingIntent for the media button and unregister it
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    PendingIntent pi = PendingIntent.getBroadcast(context,
            0/*requestCode, ignored*/, mediaButtonIntent, 0/*flags*/);
    intent.putExtra(Intent.EXTRA_KEY_EVENT, ke);
    sendKeyEvent(pi,context, intent);

    ke = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_MEDIA_PAUSE);
    intent.putExtra(Intent.EXTRA_KEY_EVENT, ke);
    sendKeyEvent(pi, context, intent);

回答6:

There is also another solution which could only pause music player which is playing :

1. implements AudioManager.OnAudioFocusChangeListener
2. override methods which is suggested by the ide.

3. call this function when it is needed :

   private void checkAudioFocus() {
       AudioManager mAudioManager = (AudioManager) getApplicationContext().getSystemService(AUDIO_SERVICE);  
       if(mAudioManager.isMusicActive())
       {
           int result = mAudioManager.requestAudioFocus(AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
       }
   }
   

来源：https://stackoverflow.com/questions/5129027/android-application-to-pause-resume-the-music-of-another-music-player-app