swift-UIAlertController
2017-03-30 本文已影响274人
Coder东
//
// ViewController.swift
// Swift-普通警告框的使用
//
// Created by 品德信息 on 2016/12/28.
// Copyright © 2016年 品德信息. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//基本警告框的使用
self.baseAlertController()
//警告框的动作列表样式
self.actionSheetController()
}
func actionSheetController() {
let btn = UIButton(type:UIButtonType.system)
btn.frame = CGRect(x:20,y:220,width:200,height:44)
btn.setTitle("Question", for: UIControlState())
btn.addTarget(self, action: #selector(ViewController.showActionSheet), for: UIControlEvents.touchUpInside)
btn.backgroundColor = UIColor.lightGray
self.view.addSubview(btn)
}
func showActionSheet() {
let alert = UIAlertController(title:"Infomation",message:"你最喜欢干什么?",preferredStyle:UIAlertControllerStyle.actionSheet)
let yes = UIAlertAction(title:"🐟",style:UIAlertActionStyle.default,handler:{(alerts:UIAlertAction) -> Void in
//暂时理解为回调
print("我喜欢吃鱼")
})
// public convenience init(title: String?, style: UIAlertActionStyle, handler: ((UIAlertAction) -> Swift.Void)? = nil)
let no = UIAlertAction(title:"hunting",style:UIAlertActionStyle.destructive,handler:{(alerts:UIAlertAction) -> Void in
print("i like hunting")})
let unKnown = UIAlertAction(title:"undo" ,style:UIAlertActionStyle.cancel,handler:{(alerts:UIAlertAction) -> Void in
print("不知道什么操作")
})
alert.addAction(yes)
alert.addAction(no)
alert.addAction(unKnown)
self.present(alert,animated: true,completion: nil)
}
func baseAlertController() {
let btn = UIButton(type:UIButtonType.system)
btn.frame = CGRect(x:20,y:120,width:200,height:44)
btn.setTitle("Question", for: UIControlState())
btn.addTarget(self, action: #selector(ViewController.alert), for: UIControlEvents.touchUpInside)
btn.backgroundColor = UIColor.lightGray
self.view.addSubview(btn)
}
func alert() {
let alert = UIAlertController(title:"Infomation",message:"Are you a student ?",preferredStyle:UIAlertControllerStyle.alert)
let yes = UIAlertAction(title:"Yes",style:UIAlertActionStyle.default,handler:{(alerts:UIAlertAction) -> Void in
//暂时理解为回调
print("yes ,I'm a student")
})
let no = UIAlertAction(title:"No",style:UIAlertActionStyle.default,handler:{(alerts:UIAlertAction) -> Void in
print("No,I'm not a student")})
let unKnown = UIAlertAction(title:"undo" ,style:UIAlertActionStyle.default,handler:{(alerts:UIAlertAction) -> Void in
print("不知道什么操作")
})
alert.addAction(yes)
alert.addAction(no)
alert.addAction(unKnown)
self.present(alert,animated: true,completion: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}