1.单View

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

self.window.backgroundColor=[UIColor grayColor];

IOS01ButtonViewController *ios01MyButton=[[IOS01ButtonViewController alloc]init];

self.window.rootViewController=ios01MyButton;

[self.window makeKeyAndVisible];

 

 

2.导航

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

self.window.backgroundColor = [UIColor whiteColor];

NavigationBarViewController *root=[[NavigationBarViewController alloc]init];

NavigationViewController *nav = [[NavigationViewController alloc]initWithRootViewController:root];

self.window.rootViewController=nav;

/*UITabBarViewController

*navigation=[[UITabBarViewController alloc]init];

self.window.rootViewController =navigation;

ButtonViewController *button1=[[ButtonViewController alloc]init];

button1.tabBarItem.title=@"Messgae";

button1.tabBarItem.badgeValue=@"99+";

TooBarViewController *button2=[[TooBarViewController alloc]init];

button2.tabBarItem.title=@"Messgae";

button2.tabBarItem.badgeValue=@"99+";

button2.view.backgroundColor=[UIColor blueColor];

//[navigation addChildViewController:button1];

//[navigation addChildViewController:button2];

navigation.viewControllers=@[button1,button2 ];

[self.window makeKeyAndVisible];