首先删除 SceneDelegate.h 和 SceneDelegate.m ,info.plist中的 Application Scene Manifest 和 AppDelegate.m 中的
#pragma mark - UISceneSession lifecycle- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options { // Called when a new scene session is being created. // Use this method to select a configuration to create the new scene with. return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];}- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions { // 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.}接着在 AppDelegate.h 和 AppDelegate.m 中增加
@property (strong, nonatomic) UIWindow * window;如果需要自己创建 window 按照原来的方法创建即可，不创建的话也可以使用 Main.storyboard
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds]; self.window.backgroundColor = [UIColor whiteColor]; [self.window makeKeyWindow]; [self.window makeKeyAndVisible]; return YES;}