foreground시 notification 변경이 안되나요?
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, " +++ onStartCommand Service +++");
NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
startForeground(NOTIFICATION_ID,new Notification());
Notification notification;
notification = new Notification.Builder(getApplicationContext())
.setContentTitle("물병")
.setContentText("블루투스 On")
.build();
nm.notify(NOTIFICATION_ID, notification);
return Service.START_REDELIVER_INTENT; //전화 번호 값 유지하기 위해서
}