1.代码创建TabBarController

demo下载:https://github.com/OwenJoe/UITabBarController_01.git

demo演示

1.AppDelegate 设置和代码

AppDelegate

 self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    //创建并初始化UITabBarController
    WBTabBarController *tabBarController = [[WBTabBarController alloc]init];
    self.window.rootViewController = tabBarController;
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

2.UITabBarController 设置和代码

UITabBarController

 
    //初始化两个视图控制器
    OneViewController *oneVc = [[OneViewController alloc]init];
    TwoViewController *twoVc = [[TwoViewController alloc]init];
    
    //为两个视图控制器添加导航栏控制器
    UINavigationController *navOne = [[UINavigationController alloc]initWithRootViewController:oneVc];
    UINavigationController *navTwo = [[UINavigationController alloc]initWithRootViewController:twoVc];
    
    //设置控制器文字
    navOne.title = @"首页";
    navTwo.title = @"个人中心";
    
    //设置控制器图片(使用imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal,不被系统渲染成蓝色)
    navOne.tabBarItem.image = [[UIImage imageNamed:@"icon_home_bottom_statist"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    navOne.tabBarItem.selectedImage = [[UIImage imageNamed:@"icon_home_bottom_statist_hl"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    navTwo.tabBarItem.image = [[UIImage imageNamed:@"icon_home_bottom_search"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    navTwo.tabBarItem.selectedImage = [[UIImage imageNamed:@"icon_home_bottom_search_hl"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    
    //改变tabbarController 文字选中颜色(默认渲染为蓝色)
    [[UITabBarItem appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName:[UIColor lightGrayColor]} forState:UIControlStateNormal];
    [[UITabBarItem appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName:[UIColor redColor]} forState:UIControlStateSelected];
    
    //创建一个数组包含四个导航栏控制器
    NSArray *vcArry = [NSArray arrayWithObjects:navOne,navTwo,nil];
    
    //将数组传给UITabBarController
    self.viewControllers = vcArry;

3.tabBar的隐藏/显示 设置和代码

tabBar的隐藏式显示

-(void)btnClickMethod{

    ThirdViewController *thirdVc = [[ThirdViewController alloc]init];
    //跳转隐藏tabBar
    self.hidesBottomBarWhenPushed = YES;
    [self.navigationController pushViewController:thirdVc animated:YES];
    //返回时候显示tabBar
    self.hidesBottomBarWhenPushed = NO;
}