Swift：我的第一个Demo（UILabel和UIButton）

发烧的小龙虾

于 2018-10-29 18:28:56 发布

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CC 4.0 BY-SA版权

分类专栏： Swift iOS

本文链接：https://blog.youkuaiyun.com/shijie97/article/details/83510827

这篇博客介绍了如何在Swift中使用UILabel和UIButton实现交互效果，当按钮被按下时，UILabel的文字会从'hello'变为'感谢点击'，松手后恢复原样。涉及到的文件包括AppDelegate.swift和ViewController.swift。

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完成的逻辑，按下按钮从hello变成感谢点击，松手还原

文件名：AppDelegate.swift

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        window = UIWindow(frame: UIScreen.main.bounds)
        let rootview = ViewController()
        window?.rootViewController = rootview
        window?.makeKeyAndVisible()
        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of tempo