1、準備一段無聲的音頻，建立一個播放音樂的Service類，将播放模式改為無限循環播放。在其onDestroy方法中對自己重新啟動。
public class PlayerMusicService extends Service {
private final static String TAG = PlayerMusicService.class.getSimpleName();
private MediaPlayer mMediaPlayer;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
Logger.d(TAG, TAG + "---->onCreate,啟動服務");
mMediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.silent);
mMediaPlayer.setLooping(true);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
new Thread(new Runnable() {
@Override
public void run() {
startPlayMusic();
}
}).start();
return START_STICKY;
}
private void startPlayMusic() {
if (mMediaPlayer != null) {
Logger.d(TAG, "啟動背景播放音樂");
mMediaPlayer.start();
}
}
private void stopPlayMusic() {
if (mMediaPlayer != null) {
Logger.d(TAG, "關閉背景播放音樂");
mMediaPlayer.stop();
}
}
@Override
public void onDestroy() {
super.onDestroy();
stopPlayMusic();
Logger.d(TAG, TAG + "---->onCreate,停止服務");
// 重新開機自己
Intent intent = new Intent(getApplicationContext(), PlayerMusicService.class);
startService(intent);
}
}
2、 在保活的DownloadServie服務類的onCreate方法中對PlayerMusicService進行啟動
Intent intent = new Intent(this, PlayerMusicService.class);
startService(intent);
3、在Manifest檔案中進行注冊
android:name=".service.PlayerMusicService"
android:enabled="true"
android:exported="true"
android:process=":music_service" />