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）
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class ViewController: UIViewController{
override func viewDidLoad() {
super.viewDidLoad()
var 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){
println("点击了取消")
}
else
{
println("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：
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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){
println("点击了取消")
}
else
{
let name = alertView.textFieldAtIndex(0)
let password = alertView.textFieldAtIndex(1)
println("用户名是：\(name!.text) 密码是：\(password!.text)")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
} |