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1.创建多个视图控制器，放如UITabBarController中
- AViewController *aa = [[AViewController alloc] init];
- UINavigationController* ayNav = [[UINavigationController alloc]initWithRootViewController:aa];
- BViewController *bb = [[BViewController alloc] init];
- UINavigationController* bNav = [[UINavigationController alloc]initWithRootViewController:bb];
- CViewController *cc = [[CViewController alloc] init];
- UINavigationController* cNav = [[UINavigationController alloc]initWithRootViewController:cc];
- DViewController *dd = [[DViewController alloc] init];
- UINavigationController* dNav = [[UINavigationController alloc]initWithRootViewController:dd];
- 2.初始化tabbar
- UITabBarController *tabBarController = [[UITabBarController alloc]init];
- tabBarController.delegate=self;
- tabBarController.viewControllers=[[NSArray alloc]initWithObjects:ayNav,bNav,cNav,dNav,nil];
3.获取到tabBarController中的tabBar，在从tabBar中获取到每个items
- UITabBar *tabBar = tabBarController.tabBar;
- UITabBarItem *aTabBarItem = [tabBar.items objectAtIndex:0];
- UITabBarItem *bTabBarItem = [tabBar.items objectAtIndex:1];
- UITabBarItem *cTabBarItem = [tabBar.items objectAtIndex:2];
- UITabBarItem *dTabBarItem = [tabBar.items objectAtIndex:3];
4. 设置tabBar中items的标题
- aTabBarItem.title = @"小韩哥";
- bTabBarItem.title = @"iOS编程";
- cTabBarItem.title = @"ios开发";
- dTabBarItem.title = @"苹果系统";
5.设置tabBar中items的图片
- [aTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"aa_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"1.png"]];
- [bTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"bb_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"2.png"]];
- [cTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"cc_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"3.png"]];
- [dTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"dd_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"4.png"]];
6.设置tabBar的背景图片
- UIImage* tabBarBackground = [UIImage imageNamed:@"tabbar1.png"];
- [[UITabBar appearance] setBackgroundImage:[tabBarBackground resizableImageWithCapInsets:UIEdgeInsetsZero]];
- [[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:@"tabbar.png"]];
- [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
- [UIColor grayColor], UITextAttributeTextColor,
- nil nil nil] forState:UIControlStateNormal];
- UIColor *titleHighlightedColor = [UIColor colorWithRed:153/255.0 green:192/255.0 blue:48/255.0 alpha:1.0];
- [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
- titleHighlightedColor, UITextAttributeTextColor,
- nil nil nil] forState:UIControlStateHighlighted];
8.将tabBarController加入window中
- self.window.rootViewController = tabBarController;
- [self.window makeKeyAndVisible];
原文地址：http://blog.csdn.net/qq_31810357/article/details/49833581
