1、Xcode 11.5去掉SceneDelegate
iOS13以下系統(tǒng)使用SceneDelegate黑屏，暫時刪除之
- info.plist中刪除UIApplication Scene Manifest
- 刪除SceneDelegate.swift文件
- 刪除AppDelegate.swift文件中的方法（不刪會黑屏）
// MARK: UISceneSession Lifecycle
func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
}
func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// Called when the user discards a scene session.
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
- 在AppDelegate.swift文件中定義window變量并賦值
var window: UIWindow?
//啟動成功
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
sleep(2) //可以延長啟動圖顯示時間，只能選擇整數(shù)嗎？？
window = UIWindow.init()
self.window?.frame = UIScreen.main.bounds
//JBaseViewController是你自己的第一個控制器
self.window?.rootViewController = JBaseViewController()
self.window?.makeKeyAndVisible()
return true
}
