删除storyboard文件

1.删除storyboard文件

2. image

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    ViewController *vc = [[ViewController alloc]init];
    [self.window setRootViewController:vc];
    self.window.backgroundColor = [UIColor purpleColor];
    [self.window makeKeyAndVisible];
    
    return YES;
}