Buttons allow us to trigger an action. There are 4 types of buttons. Simple Button Toggle Button Segmented Button Menu Button Uses of Buttons: Simple Button: for specific action like: Create ,Edit,Save,Approve, Reject,Accept,Decline,Ok , Cancel. Toggle Button: in a toolbar to activate or deactivate an object or element. Segmented Button: used for year , month , Day, Small, medium , large. Menu Button: used for more than one button.