按下 xcode 7 / Swift 2 时如何更改按钮的图像？ [复制]

Question

到目前为止，我有这个，不知道下一步该做什么。我目前在我的视图控制器中有一个带有图像（播放图像）的按钮，并希望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单击操作中

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)


    }