ios - textfiled is not empty when i return from log-out to log in screen [ SWIFT ] -

hope did work login , log out.but when try logout working fine.but when return login screen username/password remain there.

needed

how when logout or return login screen text field should empty.

here vc.swift

struct storyboard {     static let showloginsegue = "sss" }  @iboutlet weak var userfield: uitextfield!   @iboutlet weak var passfield: uitextfield! override func viewdidload() {     super.viewdidload()     // additional setup after loading view, typically nib.     self.userfield.delegate = self     self.passfield.delegate = self }  override func didreceivememorywarning() {     super.didreceivememorywarning()     // dispose of resources can recreated. }   @ibaction func loginbut(sender: anyobject) {     let klak = ""     let qwqw = ""      if userfield.text == klak && passfield.text == qwqw     {          print("correct")           performseguewithidentifier(storyboard.showloginsegue, sender: nil)      }     else     {          print("wrong")     } 

}

thanks in advance !

add code vc.swift

override func viewwillappear(animated: bool) {         userfield.text = ""         passfield.text = ""      } 

try out & let me know !