Convert activity into fragment

I ´m making a android app by Android Studio and now I have completed push app and fragment app in different app. I want to add notification menu in the fragment app. So I need help, converting my activity to work as a menu inside my fragment. It added to whole notification project as a fragment one menu except seting. and notification project' setting must be added to existing settings in the wished_frament_app. 1. I want to add notification_app to wished_frament_app (notification menu and setting) - adding notification menu 2. I want to add notification_app setting to in the wished_frament settings - adding setting in the existing settings