只需添加UIImageView IBOutlet并更改图像源。
@IBOutlet weak war imageView: UIImageView! @IBAction func changeImage(sender: UISegmentedControl) { if sender.selectedSegmentIndex == 0 { imageView.image = UIImage(named: "image1") } sender.selectedSegmentIndex == 1 { imageView.image = UIImage(named: "image2") } }