1,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。)
class ViewController: UIViewController{
override func viewDidLoad() {
super.viewDidLoad()
let alertView = UIAlertView()
alertView.title = "系统提示"
alertView.message = "仙女要休息了吗?"
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
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()
}
}
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