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  • iOS13 创建项目SceneDelegate文件

    //
    //  SceneDelegate.swift
    //  菜鸟教程
    //
    //  Created by udc on 2019/11/29.
    //  Copyright © 2019 udc. All rights reserved.
    //
    
    import UIKit
    
    class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    
        var window: UIWindow?
    
    
        func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
            // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
            // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
            // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
            guard let _ = (scene as? UIWindowScene) else { return }
        }
    
        func sceneDidDisconnect(_ scene: UIScene) {
            // Called as the scene is being released by the system.
            // This occurs shortly after the scene enters the background, or when its session is discarded.
            // Release any resources associated with this scene that can be re-created the next time the scene connects.
            // The scene may re-connect later, as its session was not neccessarily discarded (see `application:didDiscardSceneSessions` instead).
        }
    
        func sceneDidBecomeActive(_ scene: UIScene) {
            // Called when the scene has moved from an inactive state to an active state.
            // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
        }
    
        func sceneWillResignActive(_ scene: UIScene) {
            // Called when the scene will move from an active state to an inactive state.
            // This may occur due to temporary interruptions (ex. an incoming phone call).
        }
    
        func sceneWillEnterForeground(_ scene: UIScene) {
            // Called as the scene transitions from the background to the foreground.
            // Use this method to undo the changes made on entering the background.
        }
    
        func sceneDidEnterBackground(_ scene: UIScene) {
            // Called as the scene transitions from the foreground to the background.
            // Use this method to save data, release shared resources, and store enough scene-specific state information
            // to restore the scene back to its current state.
        }
    
    
    }

    此文件是给多窗口开发用的,一般用不到。删除即可。

    https://blog.csdn.net/BUG_delete/article/details/103699563

    此文仅为鄙人学习笔记之用,朋友你来了,如有不明白或者建议又或者想给我指点一二,请私信我。liuw_flexi@163.com/QQ群:582039935. 我的gitHub: (学习代码都在gitHub) https://github.com/nwgdegitHub/
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  • 原文地址:https://www.cnblogs.com/liuw-flexi/p/12625865.html
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