android Notification 声音和震动正常，呼吸等不亮？求大神

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NotificationManager manager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
//构建一个通知对象(需要传递的参数有三个,分别是图标,标题和时间)
Notification notification = new Notification(R.drawable.ic_launcher,"通知",System.currentTimeMillis());
Intent intent = new Intent(MyActivity.this,MyActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MyActivity.this,0,intent,0);
CharSequence contentText = "iiiiiiiiiii" + a;
notification.setLatestEventInfo(getApplicationContext(), "通知标题" + a , contentText, pendingIntent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;//点击后自动消失
notification.defaults |= Notification.DEFAULT_VIBRATE;
notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_LIGHTS;
notification.ledARGB = Color.RED;
notification.ledOnMS = 1;
notification.ledOffMS = 0;
notification.flags |= Notification.FLAG_SHOW_LIGHTS;
manager.notify(id, notification);//发动通知,id由自己指定，每一个Notification对应的唯一标志

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