Android notification doesn't disappear after clicking the notifcation

While building Notification by NotificationBuilder you can use notificationBuilder.setAutoCancel(true);.

notification.flags = Notification.DEFAULT_LIGHTS | Notification.FLAG_AUTO_CANCEL

From the documentation:

Bit to be bitwise-ored into the flags field that should be set if the notification should be canceled when it is clicked by the user

// Uses the default lighting scheme
notification.defaults |= Notification.DEFAULT_LIGHTS;

// Will show lights and make the notification disappear when the presses it
notification.flags |= Notification.FLAG_AUTO_CANCEL | Notification.FLAG_SHOW_LIGHTS;