如何在Swift（iOS 7）中向UIAlertView添加操作

本文介绍了如何在Swift（iOS 7）中向UIAlertView添加操作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想在重试按钮中添加一个动作，但是当用户按下重试按钮时没有任何反应。

I want to add an action to the Retry button, but when the user presses the Retry button nothing happens.

var createAccountErrorAlert: UIAlertView = UIAlertView()

createAccountErrorAlert.delegate = self

createAccountErrorAlert.title = "Oops"
createAccountErrorAlert.message = "Could not create account!"
createAccountErrorAlert.addButtonWithTitle("Dismiss")
createAccountErrorAlert.addButtonWithTitle("Retry")

createAccountErrorAlert.show()

确定按下按钮的索引的功能？

Function for determining index of button pressed?

func alertView(View: UIAlertView!, clickedButtonAtIndex buttonIndex: Int){

    switch buttonIndex{

    case 1:
        createAccount()

    default:
        //Some code here..

    }
}

推荐答案

我测试了你的代码，它对我来说工作正常，打印出相应的结果：

I tested your code and it is working fine for me it prints the respective result:

func showAlert(){
    var createAccountErrorAlert: UIAlertView = UIAlertView()

    createAccountErrorAlert.delegate = self

    createAccountErrorAlert.title = "Oops"
    createAccountErrorAlert.message = "Could not create account!"
    createAccountErrorAlert.addButtonWithTitle("Dismiss")
    createAccountErrorAlert.addButtonWithTitle("Retry")

    createAccountErrorAlert.show()
}

func alertView(View: UIAlertView!, clickedButtonAtIndex buttonIndex: Int){

    switch buttonIndex{

    case 1:
        NSLog("Retry");
    break;
    case 0:
        NSLog("Dismiss");
        break;
    default:
        NSLog("Default");
        break;
        //Some code here..

    }
}

当我点击关闭按钮时打印关闭。

It print dismiss when i click on dismiss button.

这篇关于如何在Swift（iOS 7）中向UIAlertView添加操作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

retry