iOS学习之移除Main.storyboard

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

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

TestViewController *vc = [[TestViewController alloc] init];

self.window.rootViewController = vc;

vc.view.backgroundColor = [UIColor blueColor];

[self.window makeKeyAndVisible];

return YES;

}