android - 使用 NotificationCompat 时通知导致不起作用？

Question

在我的通知中，我希望 LED 以白色闪烁。我正在使用支持库中的 NotificationCompat 类来构建通知。

通知很好地启动，但 LED 不闪烁。（在 Nexus 4 上测试）

这是代码：

// Build notification
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
mBuilder.setSmallIcon(R.drawable.ic_stat_notify);
mBuilder.setTicker(getResources().getString(R.string.task_due));
mBuilder.setContentTitle(notify_title).setContentText(notify_descrip);
mBuilder.setDeleteIntent(deleteIntent());
mBuilder.setPriority(Notification.PRIORITY_DEFAULT);
mBuilder.setLights(0xFFFF0000, 500, 500);
mBuilder.setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE);

// On notification tap
Intent resultIntent = new Intent(this, SpecialActivity.class);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);

// Notify the user
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, mBuilder.build());