如何在按下 xcode 7 / Swift 2 时更改按钮的图像？

Question

到目前为止我已经有了这个，但不知道该怎么做 next.I 目前我的视图控制器中有一个带有图像（播放图像）的按钮，我想在单击时将其更改为暂停图像。

import UIKit
import AVFoundation

class VesuviusViewController: UIViewController {


@IBOutlet weak var PausePlay: UIButton!



@IBAction func playPressed(sender: AnyObject) {
    VesSet()

}

Answer 1

尝试将其添加到您的按钮点击操作中

sender.setImage(UIImage(named: "play.png")!, forState: .Normal)

Answer 2

  @IBAction func playPressed(sender: AnyObject) {
    VesSet()



        sender.selected = !_btnCheckbox.selected;//put the appropriate  login of swift to do that 

        //checkbox
        sender.setImage(UIImage(named: "play.png")!, forState: .Normal)

       sender.setImage(UIImage(named: "pause.png")!, forState: .selected)


    }