UIAlertView在Swift中不起作用 [英] UIAlertView is Not Working in Swift

问题描述

当我在swift中使用此代码时，我不知道为什么应用程序通过在alertView.show（）部分中显示断点来终止，有人请帮助我。

when i runt this code in swift, i dont know why the app terminates by showing a break point in the "alertView.show()" part, Somebody please help me.

var alertView = UIAlertView(
    title: "Hey",
    message: "Hello",
    delegate: self,
    cancelButtonTitle: "Cancel"
)
alertView.show()

推荐答案

来自Xcode 6.0 UIAlertView类：

From Xcode 6.0 UIAlertView class:

不推荐使用UIAlertView。改为使用UIAlertController和UIAlertControllerStyleAlert的preferredStyle
。

UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead.

在swift（iOS 8和OS X 10.10）上，你可以做这个：

On swift ( iOS 8 and OS X 10.10 ), you can do this:

var alert = UIAlertController(title: "Alert Title", message: "Alert Message", preferredStyle: UIAlertControllerStyle.Alert)
        alert.addAction(UIAlertAction(title: "Close", style: UIAlertActionStyle.Cancel, handler:handleCancel))
        alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler:{ (ACTION :UIAlertAction!)in
                println("User click Ok button")
            }))
        self.presentViewController(alert, animated: true, completion: nil)

func handleCancel(alertView: UIAlertAction!)
        {
            println("User click cancel button")
        }

如果你想在'ActionSheet'中使用'Alert'，你只需要更改UIAlertCon例如：trollerStyle：

If you want to use in 'ActionSheet' instead 'Alert' you need only to change the UIAlertControllerStyle for example:

var alert = UIAlertController(title: "Alert Title", message: "Alert Message", preferredStyle: UIAlertControllerStyle.ActionSheet)

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