京西

import UIKit @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate {...

京西

import UIKit@UIApplicationMainclass AppDelegate: UIResponder, UIApplicationDelegate { ...

京西

//應(yīng)用程序代理類 //AppDelegate中的方法都是UIApplicationDelegatez的協(xié)議方法 //應(yīng)用程序類 class AppDelegate: UIR...

京西

self.window = UIWindow(frame:UIScreen.main.bounds) self.window?.backgroundColor = UICol...