Swift Gets the keyboard height

1. List Contents

Monitor keyboard up and down there are four states that can be heard.

Uikeyboardwillshownotification:string
Uikeyboarddidshownotification:string
Uikeyboardwillhidenotification:string
Uikeyboarddidhidenotification:string

Nsnotificationcenter.defaultcenter (). Addobserver (Self, selector: "Keyboardwillappear:", Name: Uikeyboardwillshownotification, Object:nil) Nsnotificationcenter.defaultcenter (). Addobserver (Self, selector: " Keyboardwilldisappear: ", Name:uikeyboardwillhidenotification, Object:nil)

　　

Func keyboardwillappear (notification:nsnotification) {        //Get keyboard information let        keyboardinfo = notification.userinfo![ Uikeyboardframebeginuserinfokey] Let        keyboardheight:cgfloat = (keyboardinfo?. CGRectValue.size.height)!        Print ("keyboard bouncing")        print (keyboardheight)    }    func keyboardwilldisappear (notification:nsnotification) {        Print ("Keyboard Falls")    }

　　

Swift Gets the keyboard height