我一直在努力在Swift中创建UIAlertView，但由于某些原因，我无法获得正确的语句，因为我遇到了以下错误:
找不到"init"的重载，该重载接受提供的 论据
我是这样写的:
let button2Alert: UIAlertView = UIAlertView(title: "Title", message: "message",
delegate: self, cancelButtonTitle: "OK", otherButtonTitles: nil)
那就称它为我正在使用的:
button2Alert.show()
到目前为止，它正在崩溃，我似乎就是不能得到正确的语法.
来自UIAlertView个班级的学生:
//UIAlertView已弃用.将UIAlertController与 改为UIAlertControllerStyleAlert的首选样式
在iOS 8上，您可以执行以下操作:
let alert = UIAlertController(title: "Alert", message: "Message", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
现在，UIAlertController是一个单独的类，用于在iOS 8上创建我们所知的UIAlertView和UIActionSheet并与之交互.
Edit:处理操作:
alert.addAction(UIAlertAction(title: "OK", style: .Default, handler: { action in
switch action.style{
case .Default:
print("default")
case .Cancel:
print("cancel")
case .Destructive:
print("destructive")
}
}}))
Edit for Swift 3:个
let alert = UIAlertController(title: "Alert", message: "Message", preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.default, handler: nil))
self.present(alert, animated: true, completion: nil)
Edit for Swift 4.x:个
let alert = UIAlertController(title: "Alert", message: "Message", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { action in
switch action.style{
case .default:
print("default")
case .cancel:
print("cancel")
case .destructive:
print("destructive")
}
}))
self.present(alert, animated: true, completion: nil)