How to create notification when button was clicked in android app

Question

plz answer as soon as possible

Answer 1

It's difficult to mention here. So, refer https://developer.android.com/training/notify-user/build-notification.html

Answer 2

no only the notification to be appeared in the tray

Answer 3

thanks...for guidance

Answer 4

Do you mean a Toast or a notification that appears in the tray?