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Important: UIAlertView is deprecated in iOS 8. (Note that UIAlertViewDelegate is also deprecated.) To create and manage alerts in iOS 8 and later, instead use UIAlertController with a preferredStyle ofUIAlertControllerStyleAlert.
在Xcode7中使用UIAlertView会报如下警告:
‘UIAlertView‘ was deprecated in iOS 9.0: UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead
Alert Views ： Alert views display a concise and informative alert message to the user.
UIAlertController 同时替代了 UIAlertView 和 UIActionSheet，从系统层级上统一了 alert 的概念 —— 即以 modal 方式或 popover 方式展示。
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// ViewController.swiftimport UIKitclass ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. //创建一个Button let button = UIButton(type: UIButtonType.Custom) //初始化UIButton button.frame = CGRectMake(50, 100, 150, 50) //创建一个CGRect, 设置位置和大小 button.backgroundColor = UIColor.greenColor() //设置背景色 button.setTitle("点击显示弹窗", forState: UIControlState.Normal) //设置标题 //传递触摸对象(点击事件) button.addTarget(self, action: "buttonPressed:", forControlEvents: UIControlEvents.TouchUpInside) self.view.addSubview(button) } // Action func buttonPressed(sender: UIButton) { showAlertReset() } func showAlertDefault(){ let alertController = UIAlertController(title: "弹窗标题", message: "Hello, 这个是UIAlertController的默认样式", preferredStyle: UIAlertControllerStyle.Alert) let cancelAction = UIAlertAction(title: "取消", style: UIAlertActionStyle.Cancel, handler: nil) let okAction = UIAlertAction(title: "好的", style: UIAlertActionStyle.Default, handler: nil) let resetAction = UIAlertAction(title: "重置", style: UIAlertActionStyle.Destructive, handler: nil) alertController.addAction(resetAction) alertController.addAction(cancelAction) alertController.addAction(okAction) self.presentViewController(alertController, animated: true, completion: nil) } func showAlertReset(){ let alertControl = UIAlertController(title: "弹窗的标题", message: "Hello,showAlertReset ", preferredStyle: UIAlertControllerStyle.Alert) let cancelAction = UIAlertAction(title: "取消操作", style: UIAlertActionStyle.Destructive, handler: nil) let okAction = UIAlertAction(title: "好的", style: UIAlertActionStyle.Default, handler: nil) alertControl.addAction(cancelAction) alertControl.addAction(okAction) self.presentViewController(alertControl, animated: true, completion: nil) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }} |
参考：
http://www.jianshu.com/p/86f933850df8
http://blog.csdn.net/xiaowenwen1010/article/details/40108097
[Swift]UIKit学习之警告框:UIAlertController和UIAlertView
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原文地址：http://www.cnblogs.com/qyfeng009/p/5114397.html
