swift 点击button改变其内填充图片,达到选中的效果

先看下效果:

点击后:

实现:在页面拖一个button,然后在所在页面声明其变量和一个点击事件

声明:

@IBOutlet weak var BtnZiDong: UIButton!

点击事件函数:

 @IBAction func actionZiDong(sender: AnyObject) {
         BtnZiDong .setImage(UIImage(named: "check1.png"), forState:UIControlState.Normal)
         BtnZiDong .setImage(UIImage(named: "check.png"), forState: UIControlState.Selected)

         if BtnZiDong .selected == true{
             BtnZiDong .selected=false
         }else{
             BtnZiDong .selected = true
         }

     }