①删除Info.plist中的Application Scene Manifest这一列
②删除或注释下面的代理方法
- (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.
}
③
AppDelegate.h 中增加属性@property(nonatomic,strong)UIWindow*window;
④AppDelegate.m更改切换root
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
self.window.backgroundColor = UIColor.whiteColor;
self.window.rootViewController = [OneViewController new];
[self.window makeKeyAndVisible];
return YES;
}
⑤需要注意的是后续的Controller继承对象一定要是UIViewController而不是ViewController
