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
        }
        
        
    }