- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    tabBarCtrl = [[UITabBarController alloc] init];//要加入的TabBarController

    tabBarCtrl.delegate = self;

    //

    firstViewCtl = [[UIViewController alloc] init];

    firstViewCtl.title = @"first view controller";

    firstViewCtl.view.backgroundColor = [UIColor blueColor];

    firstViewCtl.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"rename first" image: nil tag:1];//自定义tabBarItem,可以贴tabBarItem背景图片，如果不写，tabBarItem的标签将显示为firstViewCtl.title内容

secondViewCtrl = [[UIViewController alloc] init]; secondViewCtrl.title = @"second view controller"; secondViewCtrl.view.backgroundColor = [UIColor redColor]; 
secondViewCtrl.tabBarItem.badgeValue = [NSString stringWithFormat:@"%d",8]; //tabBarItem红色小圈中显示数字
secondViewCtrl.tabBarItem.tag = 2; //加标示
NSArray *arryViewContrller = [NSArray arrayWithObjects:firstViewCtl, secondViewCtrl,nil]; tabBarCtrl.viewControllers = arryViewContrller; tabBarCtrl.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);

[self.view addSubview:tabBarCtrl.view]; }

@interface ViewController : UIViewController<UITabBarDelegate>

{

    UITabBarController *tabBarCtrl;

    UIViewController *firstViewCtl;

    UIViewController *secondViewCtrl;

}

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController

{

    NSString *strTitle = viewController.title;

    NSLog(@"Title:%@ tag:%d", strTitle  , viewController.tabBarItem.tag);

if(1 == viewController.tabBarItem.tag)

　　　{

viewController.tabBarItem.badgeValue = [NSStringstringWithFormat:@"%d", rand()%100];

}

}