iOS 新建一个手写工程，删除main

1.  删除main.storyboard

2. 删除info.plist文件中Main storyboard file base name 

3. 全局搜索Main  删除 Storyboard Name文件

4. 注释掉这两个方法：

AppDelegate

- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options { return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role]; }

- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions { }