一、UITabBarController对象的创建和初始化
首先创建多个视图控制器,并在tabBarItem中添加标题和图片
self.viewController.tabBarItem.title = @"首页";//设置tabBarItem标题
self.viewController.tabBarItem.image = [UIImage imageNamed:@"icon_home"];//添加图片
self.viewController.tabBarItem.badgeValue = @"1";//消息
FirstViewController *one = [[FirstViewController alloc] init];
one.tabBarItem.title = @"消息";
one.tabBarItem.image = [UIImage imageNamed:@"icon_meassage"];
SecondViewController *two = [[SecondViewController alloc] init];
two.tabBarItem.title = @"联系人";
two.tabBarItem.image = [UIImage imageNamed:@"icon_selfinfo"];
ThirdViewController *three = [[ThirdViewController alloc] init];
three.title = @"搜索";
three.tabBarItem.image = [UIImage imageNamed:@"icon_search"];
ForthViewController *four = [[ForthViewController alloc] init];
four.tabBarItem.title = @"更多";
four.tabBarItem.image = [UIImage imageNamed:@"icon_more"];
FifthViewController *five = [[FifthViewController alloc]init];
five.tabBarItem.title = @"订阅";
SixthViewController *six = [[SixthViewController alloc] init];
six.tabBarItem.title = @"下载";
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:three];
注意,第三个视图控制器为导航控制器 (可以将导航控制器加进UITabBarController,这样就会出现屏幕的上下方都有导航栏)
NSArray *vcArray = [NSArrayarrayWithObjects:self.viewController, one, two, nav, four, five, six, nil];//创建视图控制器数组
UITabBarController *tabBarC = [[UITabBarController alloc] init];
tabBarC.tabBar.selectedImageTintColor = [UIColor redColor];//选中时图片颜色变为红色
tabBarC.viewControllers = vcArray;//将多个视图控制器组织到tab控制器中,以选项卡
self.window.rootViewController = tabBarC;//设置根视图控制器为tabBarController