How to change UIButton image in Swift

Question

I am trying to change the image of a UIButton using Swift... What should I do

This is OBJ-C code.but I don\'t know with Swift:

[playButton setImage:[         


        

Answer 1

assume that this is your connected UIButton Name like

@IBOutlet var btn_refresh: UIButton!

your can directly place your image in three modes

 // for normal state
btn_refresh.setImage(UIImage(named: "xxx.png"), forState: UIControlState.Normal)
     // for Highlighted state
      btn_refresh.setImage(UIImage(named: "yyy.png"), forState: UIControlState.Highlighted)

        // for Selected state
         btn_refresh.setImage(UIImage(named: "zzzz.png"), forState: UIControlState.Selected)

on your button action

  //MARK: button_refresh action
@IBAction func button_refresh_touchup_inside(sender: UIButton)
{
    //if you set the image on same  UIButton
    sender.setImage(UIImage(named: "newimage.png"), forState: UIControlState.Normal)

    //if you set the image on another  UIButton
       youranotherbuttonName.setImage(UIImage(named: "newimage.png"), forState: UIControlState.Normal)
}