Android notification disappears after display

After studying the problem in the afternoon, I still saw the synchronization problem of the mckochi notebook. After a long time, his notice disappeared after the following. After a long time, I had to worry about it. Is it not reliable to use a thread, I found an API for one afternoon and wanted to find something useful, but I couldn't find it. Icationicationmanager notificationmanager = (notificationmanager) context. getsystemservice (Android. content. context. notification_service); Notification = new notification (R. drawable. icon, message, system. currenttimemillis (); pendingintent contentintent = pendingintent. getactivity (context, 0, new intent (), 0); notification. setlatesteventinfo (context, null, null, contentintent); notificati On. flags = notification. flag_auto_cancel; icationicationmanager. Y (123, notification); icationicationmanager. cancel (123); and then continue to drum up. At, I came up with it. I'll try again, notify, and then cancel. That's the effect. It feels good. Hey.
Notification
Well, many experts have explained this in detail.