adnroid the program was 360 killed, but the Notification remains, how to start it this Notification bound Activity

I recently did a small program, which uses a notification
I found a problem on the phone when in use, the program turned back to the desktop, with the 360 ​​a key clean-up, the program is killed, but it's still Notification, if the time to start using this Notification, then on error.
Then PendingInetent settings.
intent.setFlags (Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
Notification to start with, when there is no data in the application, so failed to start, how to get this.
For example, how to determine when to start the Notification purpose Acitivity whether it exists or how the. . .

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Reply:
This can be achieved with SERVICE. Set as ongoing.