0.界面回顾
1.在AppDelegate文件中添加如下代码
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
window=UIWindow(frame:UIScreen.main.bounds)
window?.rootViewController = RedViewController() //通过修改这句话决定程序第一次停留的页面,此处为红色页面(.storyboard)
//window?.rootViewController = BlueViewController(nibName:"BlueViewController",bundle:nil) //通过修改这句话决定程序第一次停留的页面,此处为蓝色页面(.xib)
window?.makeKeyAndVisible()
return true
}
}
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