iOS中 UITabBarController中自定义UITabBar

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1.创建多个视图控制器，放如UITabBarController中

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1. AViewController  *aa = [[AViewController alloc] init];  
2.    UINavigationController* ayNav = [[UINavigationController alloc]initWithRootViewController:aa];  
3.   
4.   BViewController  *bb = [[BViewController alloc] init];  
5.   UINavigationController* bNav = [[UINavigationController alloc]initWithRootViewController:bb];  
6.   
7.    CViewController  *cc = [[CViewController alloc] init];  
8.    UINavigationController* cNav = [[UINavigationController alloc]initWithRootViewController:cc];  
9.   
10.    DViewController  *dd = [[DViewController alloc] init];  
11.    UINavigationController* dNav = [[UINavigationController alloc]initWithRootViewController:dd];  
12.    2.初始化tabbar  
13.   UITabBarController *tabBarController = [[UITabBarController alloc]init];  
14.   tabBarController.delegate=self;  
15.    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

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1. UITabBar *tabBar = tabBarController.tabBar;  
2.  UITabBarItem *aTabBarItem = [tabBar.items objectAtIndex:0];  
3.  UITabBarItem *bTabBarItem = [tabBar.items objectAtIndex:1];  
4. UITabBarItem *cTabBarItem = [tabBar.items objectAtIndex:2];  
5. UITabBarItem *dTabBarItem = [tabBar.items objectAtIndex:3];  

  4. 设置tabBar中items的标题

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1. aTabBarItem.title = @"小韩哥";  
2. bTabBarItem.title = @"iOS编程";  
3. cTabBarItem.title = @"ios开发";  
4. dTabBarItem.title = @"苹果系统";  

   5.设置tabBar中items的图片

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1. [aTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"aa_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"1.png"]];  
2. [bTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"bb_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"2.png"]];  
3. [cTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"cc_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"3.png"]];  
4. [dTabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"dd_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"4.png"]];  

    6.设置tabBar的背景图片

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1. UIImage* tabBarBackground = [UIImage imageNamed:@"tabbar1.png"];  
2. [[UITabBar appearance] setBackgroundImage:[tabBarBackground resizableImageWithCapInsets:UIEdgeInsetsZero]];  
3. [[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:@"tabbar.png"]];  

   7.改变tabBar中items上字体的颜色

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1. [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:  
2.                                                    [UIColor grayColor], UITextAttributeTextColor,  
3.                                                    nil nil nil] forState:UIControlStateNormal];  
4.  UIColor *titleHighlightedColor = [UIColor colorWithRed:153/255.0 green:192/255.0 blue:48/255.0 alpha:1.0];  
5.  [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:  
6.                                                     titleHighlightedColor, UITextAttributeTextColor,  
7.                                                    nil nil nil] forState:UIControlStateHighlighted];  

 8.将tabBarController加入window中

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1. self.window.rootViewController = tabBarController;  
2. [self.window makeKeyAndVisible];  

原文地址：http://blog.youkuaiyun.com/qq_31810357/article/details/49833581