- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] init];
UIStoryBoard *storyboard = [UIStoryBoard storyboardWithName:@"Main" bundle:nil];
//加载storyboard箭头指向的控制器
UIViewController *vc = [storyboard instantiateInitiaViewController];
//或者可以根据标识加载控制器
UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"VC"];
self.window.rootViewController = vc;
[self.window makeKeyAndVisible];
return YES;
}