UI_UITabBarController
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建立控制器
// 普通控制器 GroupViewController *groupVC = [[GroupViewController alloc] init]; SecondViewController *secondVC = [[SecondViewController alloc] init]; ThirdViewController *thirdVC = [[ThirdViewController alloc] init]; FourthViewController *fourthVC = [[FourthViewController alloc] init];
// 导航栏控制器 UINavigationController *groupNC = [[UINavigationController alloc] initWithRootViewController:groupVC]; UINavigationController *secondNC = [[UINavigationController alloc] initWithRootViewController:secondVC]; UINavigationController *thirdNC = [[UINavigationController alloc] initWithRootViewController:thirdVC]; UINavigationController *fourthNC = [[UINavigationController alloc] initWithRootViewController:fourthVC];```
@interface AppDelegate () <UITabBarControllerDelegate>
// tabBarVC 控制器 UITabBarController *tabBarVC = [[UITabBarController alloc] init]; // 设置 tabBarVC 代理(先遵守协议) tabBarVC.delegate = self; // 设置 tabBar 默认选中的控制器 tabBarVC.selectedIndex = 1; // 设置 tabBarVC 管理(包含)的控制器 tabBarVC.viewControllers = @[groupNC, secondNC, thirdNC, fourthNC, uiVC1, uiVC2, uiVC3];
// 自定义样式 tabBarItem(选中颜色)注意是那种控制器 groupNC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"活动" image:[UIImage imageNamed:@"activity"] selectedImage:[UIImage imageNamed:@"微信"]]; // 显示右上角 小圈圈 groupNC.tabBarItem.badgeValue = @"10"; secondNC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"影院" image:[UIImage imageNamed:@"cinema"] selectedImage:[UIImage imageNamed:@"通讯录"]]; thirdNC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"电影" image:[UIImage imageNamed:@"movie"] selectedImage:[UIImage imageNamed:@"发现"]]; fourthNC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"我" image:[UIImage imageNamed:@"user"] selectedImage:[UIImage imageNamed:@"我"]];
// 设置整个 tabBar // 颜色(和样式冲突) tabBarVC.tabBar.barTintColor = [UIColor yellowColor]; // 样式(和颜色冲突)// tabBarVC.tabBar.barStyle = UIBarStyleBlack; // 字体颜色 [tabBarVC.tabBar setTintColor:[UIColor greenColor]];
#pragma mark - 选择 tabBar 所控制的控制器,会执行的方法(每次都会执行)- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{ NSInteger index = [tabBarController.viewControllers indexOfObject:viewController]; if (index == 3) { NSLog(@"four"); } if (tabBarController.selectedIndex == 2) { NSLog(@"three"); }}#pragma mark - 控制 tabBar 是否可以点击- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController{ return YES;}
// 获取到所有的 UINavigationBar(工程里面所有) [[UINavigationBar appearance] setBarTintColor:[UIColor purpleColor]];
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