我使用了一个叫播放器服务的通知,这个播放器应该播放音乐。 但我不知道如何在后台玩?
您可以看到以下代码:
1.First File call player service
Intent i=new Intent(this, PlayerService.class);
i.putExtra(PlayerService.EXTRA_PLAYLIST, "main");
i.putExtra(PlayerService.EXTRA_SHUFFLE, true);
startService(i);
2.Second file是一个播放音乐的课程
public class PlayerService extends Service {
public static final String EXTRA_PLAYLIST="EXTRA_PLAYLIST";
public static final String EXTRA_SHUFFLE="EXTRA_SHUFFLE";
private boolean isPlaying=false;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
String playlist=intent.getStringExtra(EXTRA_PLAYLIST);
boolean useShuffle=intent.getBooleanExtra(EXTRA_SHUFFLE, false);
play(playlist, useShuffle);
return(START_NOT_STICKY);
}
@Override
public void onDestroy() {
stop();
}
@Override
public IBinder onBind(Intent intent) {
return(null);
}
private void play(String playlist, boolean useShuffle) {
if (!isPlaying) {
Log.w(getClass().getName(), "Got to play()!");
isPlaying=true;
Notification note=new Notification(R.drawable.stat_notify_chat, "Can you hear the music?", System.currentTimeMillis());
Intent i=new Intent(this, FakePlayer.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pi=PendingIntent.getActivity(this, 0,i, 0);
note.setLatestEventInfo(this, "Fake Player","Now Playing: \"Ummmm, Nothing\"", pi);
note.flags|=Notification.FLAG_NO_CLEAR;
startForeground(1337, note);
}
}
private void stop() {
if (isPlaying) {
Log.w(getClass().getName(), "Got to stop()!");
isPlaying=false;
stopForeground(true);
}
}
}
谢谢和问候,奥米德
答案 0 :(得分:1)
可能你已经找到了答案,但也许对其他人有帮助。也就是说,Notification类具有sound方法,该方法需要在通知发生时想要播放的文件的路径。有关详细信息,请参阅notification examples(特别是“添加声音”段落)。