UITabBarController

UITabBarController 能够控制一组UIViewController (或者UINavigationController)

UITabBarController 的创建和添加UIViewController步骤:

- (void)viewDidLoad {    [super viewDidLoad];    // 创建视图控制器    OneViewController *oneVC = [[OneViewController alloc] init];    TwoViewController *twoVC = [[TwoViewController alloc] init];    ThreeViewController *threeVC = [[ThreeViewController alloc] init];    FourViewController *fourVC = [[FourViewController alloc] init];    FiveViewController *fiveVC = [[FiveViewController alloc] init];    SixViewController *sixVC = [[SixViewController alloc] init];    // 创建导航控制器    UINavigationController *oneNav = [[UINavigationController alloc] initWithRootViewController:oneVC];    UINavigationController *twoNav = [[UINavigationController alloc] initWithRootViewController:twoVC];    UINavigationController *threeNav = [[UINavigationController alloc] initWithRootViewController:threeVC];    UINavigationController *fourNav = [[UINavigationController alloc] initWithRootViewController:fourVC];    UINavigationController *fiveNav = [[UINavigationController alloc] initWithRootViewController:fiveVC];    UINavigationController *sixNav = [[UINavigationController alloc] initWithRootViewController:sixVC];    // 显示按钮的标题(tabBarItem)    oneVC.tabBarItem.title = @"首页";    twoVC.tabBarItem.title = @"第二页";    threeVC.tabBarItem.title = @"第三页";    fourVC.tabBarItem.title = @"第四页";    fiveVC.tabBarItem.title = @"第五页";    sixVC.tabBarItem.title = @"第六页";    // 设置图片    // 显示图片原有颜色    // 按原始的图片进行绘制(绘制出来的是原来的颜色)    oneVC.tabBarItem.image = [[UIImage imageNamed:@"11"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    twoVC.tabBarItem.image = [UIImage imageNamed:@"24-gift"];    threeVC.tabBarItem.image = [UIImage imageNamed:@"21-skull"];    fourVC.tabBarItem.image = [UIImage imageNamed:@"61-brightness"];    fiveVC.tabBarItem.image = [UIImage imageNamed:@"99-umbrella"];    sixVC.tabBarItem.image = [UIImage imageNamed:@"64-zap"];    // 设置选中的图片    oneVC.tabBarItem.selectedImage = [UIImage imageNamed:@"88-beermug"];    twoVC.tabBarItem.selectedImage = [UIImage imageNamed:@"93-thermometer"];    threeVC.tabBarItem.selectedImage = [UIImage imageNamed:@"67-tshirt"];    fourVC.tabBarItem.selectedImage = [UIImage imageNamed:@"101-gameplan"];    fiveVC.tabBarItem.selectedImage = [UIImage imageNamed:@"108-badge"];    sixVC.tabBarItem.selectedImage = [UIImage imageNamed:@"109-chicken"];    // 显示到tabBarControl里面    // 需要添加到 viewControllers的数组中    self.viewControllers = @[oneNav, twoNav, threeNav, fourNav, fiveNav, sixNav];    // 设置bar的颜色    self.tabBar.barTintColor = [UIColor blueColor];    // 模块图片的填充色    self.tabBar.tintColor = [UIColor orangeColor];    // 设置bar背景图片    // tabBar的高度 49    self.tabBar.backgroundImage = [UIImage imageNamed:@"tabBar"];    // 设置默认选中    self.selectedIndex = 2;    // tabBarItem上的 红色提示按钮    twoVC.tabBarItem.badgeValue = @"99+";    // 设置代理    self.delegate = self;    // 释放    [oneVC release];    [twoVC release];    [threeVC release];    [fourVC release];    [fiveVC release];    [sixVC release];    [oneNav release];    [twoNav release];    [threeNav release];    [fourNav release];    [fiveNav release];    [sixNav release];}

协议方法

#pragma mark -- 代理方法- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController{    // 可以指定哪个控制器不让点击    // 先取出 不让点击的控制器    UINavigationController *nav = self.viewControllers[3];    // 如果选中的控制器是你不想让用户点击的 那么返回NO    if (viewController == nav) {        return NO;    }else{        return YES;    }}// 选中页面时触发的方法- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{    // 打印选中的索引    NSLog(@"%ld",self.selectedIndex);    // 选中时 把红点去除    viewController.tabBarItem.badgeValue = nil;}// 控制more的代理方法- (void)tabBarController:(UITabBarController *)tabBarController willBeginCustomizingViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers{    NSLog(@"将要开始编辑more");}- (void)tabBarController:(UITabBarController *)tabBarController willEndCustomizingViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers changed:(BOOL)changed{    NSLog(@"将要结束编辑more");}- (void)tabBarController:(UITabBarController *)tabBarController didEndCustomizingViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers changed:(BOOL)changed{    NSLog(@"已经结束编辑more");}