1,下面代码创建并弹出一个告警框,并带有“取消”“确定”两个按钮
(注:自IOS8起,建议使用UIAlertController。点击查看UIAlertController的用法)
class ViewController: UIViewController{
override func viewDidLoad() {
super.viewDidLoad()
let alertView = UIAlertView()
alertView.title = "系统提示"
alertView.message = "您确定要离开hangge.com吗?"
alertView.addButtonWithTitle("取消")
alertView.addButtonWithTitle("确定")
alertView.cancelButtonIndex=0
alertView.delegate=self;
alertView.show()
}
func alertView(alertView:UIAlertView, clickedButtonAtIndex buttonIndex: Int){
if(buttonIndex==alertView.cancelButtonIndex){
print("点击了取消")
}
else
{
print("点击了确认")
}
}
}
2,告警框有下面4种样式
Default:默认样式
PlainTextInput:带输入框的告警框
SecureTextInput:带密码框的告警框
LoginAndPasswordInput:带输入框和密码框的告警框
下面是一个使用输入框和密码框的告警框样例:
原文:Swift - 告警框(UIAlertView)的用法
import UIKit
class ViewController: UIViewController {
var alertView = UIAlertView()
override func viewDidLoad() {
super.viewDidLoad()
alertView.title = "系统登录"
alertView.message = "请输入用户名和密码!"
alertView.addButtonWithTitle("取消")
alertView.addButtonWithTitle("确定")
alertView.cancelButtonIndex=0
alertView.delegate=self;
alertView.alertViewStyle = UIAlertViewStyle.LoginAndPasswordInput
alertView.show()
}
func alertView(alertView:UIAlertView, clickedButtonAtIndex buttonIndex: Int){
if(buttonIndex==alertView.cancelButtonIndex){
print("点击了取消")
}
else
{
let name = alertView.textFieldAtIndex(0)
let password = alertView.textFieldAtIndex(1)
print("用户名是:\(name!.text) 密码是:\(password!.text)")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
原文出自:www.hangge.com 转载请保留原文链接:http://www.hangge.com/blog/cache/detail_537.html
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