Я сделал так и результатом доволен:
Сначала создайте службу:
public class LocalService extends Service
{
// This is the object that receives interactions from clients. See RemoteService for a more complete example.
private final IBinder mBinder = new LocalBinder();
private MediaPlayer player;
/**
* Class for clients to access. 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
{
LocalService getService()
{
return LocalService.this;
}
}
@Override
public void onCreate()
{
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
// We want this service to continue running until it is explicitly stopped, so return sticky.
return START_STICKY;
}
@Override
public void onDestroy()
{
destroy();
}
@Override
public IBinder onBind(Intent intent)
{
return mBinder;
}
public void play(int res)
{
try
{
player = MediaPlayer.create(this, res);
player.setLooping(true);
player.setVolume(0.1f, 0.1f);
player.start();
}
catch(Exception e)
{
e.printStackTrace();
}
}
public void pause()
{
if(null != player && player.isPlaying())
{
player.pause();
player.seekTo(0);
}
}
public void resume()
{
try
{
if(null != player && !player.isPlaying())
{
player.start();
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
public void destroy()
{
if(null != player)
{
if(player.isPlaying())
{
player.stop();
}
player.release();
player = null;
}
}
}
Второе, создайте базовое действие и расширьте все свои действия, если вы хотите воспроизводить фоновую музыку из него:
public class ActivityBase extends Activity
{
private Context context = ActivityBase.this;
private final int [] background_sound = { R.raw.azilum_2, R.raw.bg_sound_5 };
private LocalService mBoundService;
private boolean mIsBound = false;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
doBindService();
}
@Override
protected void onStart()
{
super.onStart();
try
{
if(null != mBoundService)
{
Random rand = new Random();
int what = background_sound[rand.nextInt(background_sound.length)];
mBoundService.play(what);
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
@Override
protected void onStop()
{
super.onStop();
basePause();
}
protected void baseResume()
{
try
{
if(null != mBoundService)
{
mBoundService.resume();
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
protected void basePause()
{
try
{
if(null != mBoundService)
{
mBoundService.pause();
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
private ServiceConnection mConnection = new ServiceConnection()
{
public void onServiceConnected(ComponentName className, IBinder service)
{
// This is called when the connection with the service has been
// established, giving us the service object we can use to
// interact with the service. Because we have bound to a explicit
// service that we know is running in our own process, we can
// cast its IBinder to a concrete class and directly access it.
mBoundService = ((LocalService.LocalBinder) service).getService();
if(null != mBoundService)
{
Random rand = new Random();
int what = background_sound[rand.nextInt(background_sound.length)];
mBoundService.play(what);
}
}
public void onServiceDisconnected(ComponentName className)
{
// This is called when the connection with the service has been
// unexpectedly disconnected -- that is, its process crashed.
// Because it is running in our same process, we should never
// see this happen.
mBoundService = null;
if(null != mBoundService)
{
mBoundService.destroy();
}
}
};
private void doBindService()
{
// Establish a connection with the service. We use an explicit
// class name because we want a specific service implementation that
// we know will be running in our own process (and thus won't be
// supporting component replacement by other applications).
Intent i = new Intent(getApplicationContext(), LocalService.class);
bindService(i, mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
private void doUnbindService()
{
if (mIsBound)
{
// Detach our existing connection.
unbindService(mConnection);
mIsBound = false;
}
}
@Override
protected void onDestroy()
{
super.onDestroy();
doUnbindService();
}
}
И все, теперь у вас есть фоновый звук во всех действиях, расширенных из ActivityBase.
Вы даже можете управлять функциями паузы/возобновления, вызывая basePause()/baseResume().
Не забудьте объявить сервис в манифесте:
<service android:name="com.gga.screaming.speech.LocalService" />
person
Goran Horia Mihail
schedule
23.04.2014
Service
и управлять экземпляромMediaPlayer
оттуда - person M D   schedule 17.04.2014