iOS开发-tabBar的常见设置

效果展示

1. 签tarBar协议

 目的点击时tabBarItem.badgeValue = nil

<UITabBarControllerDelegate>

2.设置

 self.window= [[UIWindowalloc]initWithFrame:[[UIScreenmainScreen]bounds]];

   self.window.backgroundColor= [UIColorwhiteColor];
    [self.windowmakeKeyAndVisible];

   

   // 微信部分 

   RootViewController*rootVC = [[RootViewControlleralloc]init];
    UINavigationController *naVC = [[UINavigationControlleralloc]initWithRootViewController:rootVC];
    // 设置内容
    naVC.tabBarItem= [[UITabBarItemalloc]initWithTitle:@"微信"image:[UIImageimageNamed:@"clock"]tag:1000];
    // 提示信息
    naVC.tabBarItem.badgeValue= @"1";
   

   

   // 通讯录部分 

   firstViewController*firstVC = [[firstViewControlleralloc]init];
    UINavigationController *firstnaVC = [[UINavigationControlleralloc]initWithRootViewController:firstVC];
    firstnaVC.tabBarItem= [[UITabBarItemalloc]initWithTitle:@"通讯录"image:[UIImageimageNamed:@"chat2"]selectedImage:[UIImageimageNamed:@"gear"]];
    firstnaVC.tabBarItem.badgeValue= @"new";
   

   

   // 第三部分 

   SecondViewController*secondVC = [[SecondViewControlleralloc]init];
    UINavigationController *secondnaVC = [[UINavigationControlleralloc]initWithRootViewController:secondVC];
    secondVC.tabBarItem= [[UITabBarItemalloc]initWithTabBarSystemItem:UITabBarSystemItemBookmarkstag:10000];
    secondVC.tabBarItem.badgeValue= @"99+";
   
   
   
    // 标签视图控制器，用来管理导航控制器的
    UITabBarController *tabBars = [[UITabBarControlleralloc]init];
   
    // 设置背景颜色
    tabBars.tabBar.barTintColor= [UIColorgreenColor];
    // 设置不半透明
    tabBars.tabBar.translucent= NO;
    // 设置选中按钮的颜色
    tabBars.tabBar.tintColor= [UIColorblueColor];
   
   
   
    // 给标签控制器指定子控制器
    tabBars.viewControllers= [NSArrayarrayWithObjects:naVC,firstnaVC,secondnaVC,nil];
    self.window.rootViewController= tabBars;
    [tabBars release];
   
   

    tabBars.delegate= self;

   

3.实现tarBar协议方法

//点击tabBar上按钮时触发
- (void)tabBarController:(UITabBarController*)tabBarController didSelectViewController:(UIViewController*)viewController{
    NSLog(@"==%@",viewController);
    UINavigationController*navc = (UINavigationController*)viewController;
    navc.tabBarItem.badgeValue= nil;

}