三种状态 常规(default)、取消(cancel)以及警示(destructive)

1，在中间有点击方法

        let alertVC = UIAlertController(title: "提示", message: "我是提示框", preferredStyle: UIAlertControllerStyle.Alert)
        let acSure = UIAlertAction(title: "确定", style: UIAlertActionStyle.Destructive) { (UIAlertAction) -> Void in
            print("click Sure")
        }
        let acCancel = UIAlertAction(title: "取消", style: UIAlertActionStyle.Cancel) { (UIAlertAction) -> Void in
            print("click Cancel")
        }
        alertVC.addAction(acSure)
        alertVC.addAction(acCancel)
        self.presentViewController(alertVC, animated: true, completion: nil)

2，在中间无点击方法

        let alertController = UIAlertController(title: "提示", message: "我是提示框",preferredStyle: .Alert)
        let cancelAction1 = UIAlertAction(title: "确定", style: .Destructive, handler: nil)
        let cancelAction2 = UIAlertAction(title: "取消", style: .Cancel, handler: nil)
        alertController.addAction(cancelAction1)
        alertController.addAction(cancelAction2)
        self.presentViewController(alertController, animated: true, completion: nil)
        

中间.png

3，在底下有点击方法

        let alertVC = UIAlertController(title: "提示", message: "我是提示框", preferredStyle: UIAlertControllerStyle.ActionSheet)
        let acSure = UIAlertAction(title: "确定", style: UIAlertActionStyle.Destructive) { (UIAlertAction) -> Void in
            print("click Sure")
        }
        let acCancel = UIAlertAction(title: "取消", style: UIAlertActionStyle.Cancel) { (UIAlertAction) -> Void in
            print("click Cancel")
        }
        alertVC.addAction(acSure)
        alertVC.addAction(acCancel)
        self.presentViewController(alertVC, animated: true, completion: nil)

4，在底下无点击方法

        let alertController = UIAlertController(title: "提示", message: "我是提示框",preferredStyle: .ActionSheet)
        let cancelAction1 = UIAlertAction(title: "确定", style: .Default, handler: nil)
        let cancelAction2 = UIAlertAction(title: "取消", style: .Cancel, handler: nil)
        alertController.addAction(cancelAction1)
        alertController.addAction(cancelAction2)
        self.presentViewController(alertController, animated: true, completion: nil)

底下.png

UIAlertView(title: "提示", message:"", delegate: nil, cancelButtonTitle: "确定").show()