ios手写代码添加控制器

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

    // 1.创建window

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // 2.设置window的背景色

    self.window.backgroundColor = [UIColor whiteColor];

    

    MyOneViewController *one = [[MyOneViewController alloc] init];

//    [self.window addSubview:one.view];

    self.window.rootViewController = one;

    // 3.显示window

    [self.window makeKeyAndVisible];

    return YES;

}