我有一个NotificationManager成功创建一个Notification：
private void showNotification() {
Notification notification = new Notification(R.drawable.snog_icon, getString(R.string.sn_g_entering_beacon_mode_),
System.currentTimeMillis());
// The PendingIntent to launch our activity if the user selects this notification
Intent i = new Intent(this, SnogActivity.class);
i.putExtra("fromNotification", "yes");
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, i, 0);
notification.setLatestEventInfo(this, getString(R.string.sn_g_avalanche_buddy),
getString(R.string.beacon_mode_activated_), contentIntent);
notification.flags |= Notification.FLAG_ONGOING_EVENT; // Notification.DEFAULT_ALL
// Send the notification.
// We use a string id because it is a unique number. We use it later to cancel.
mNM.notify(R.string.service_started, notification);
}
该部分工作正常，它显示了我的通知，当我点击通知时，正确的活动就开始了。稍后在应用程序中，我尝试通知一个简单的通知：
Notification not = new Notification(R.drawable.snog_icon, "checker", System.currentTimeMillis());
not.flags |= Notification.DEFAULT_ALL;
mNM.notify(R.string.checker, not);
这会使应用程序在notify()通话中崩溃，并带有IllegalArgumentException. 我应该NotificationCompat.Builder根据相当多的互联网结果使用，但这甚至不可用。