自定义tabbar

新建一个继承UITabbar的类

- (void)viewDidLoad {

    [super viewDidLoad];

    LFHomeTableViewController *home=[[LFHomeTableViewController alloc]init];

    [self addChildVC:home Title:@"首页" image:@"tabbar_home" selectedImage:@"tabbar_home_selected"];

    

    LFMessageTableViewController *discover=[[LFMessageTableViewController alloc]init];

    [self addChildVC:discover Title:@"消息" image:@"tabbar_message_center" selectedImage:@"tabbar_message_center_selected"];

    

    LFDiscoverTableViewController *message=[[LFDiscoverTableViewController alloc]init];

    [self addChildVC:message Title:@"发现" image:@"tabbar_discover" selectedImage:@"tabbar_discover_selected"];

    

    LFProfileTableViewController *profile=[[LFProfileTableViewController alloc]init];

    [self addChildVC:profile Title:@"我" image:@"tabbar_profile" selectedImage:@"tabbar_profile_selected"];

}

- (void)addChildVC:(UIViewController *)childVC Title:(NSString *)title image:(NSString *)image selectedImage:(NSString *)selectedImage

{

    childVC.title=title;

    childVC.tabBarItem.image=[UIImage imageNamed:image];

    childVC.tabBarItem.selectedImage=[[UIImage imageNamed:selectedImage]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    

    //设置文字的样式

    NSMutableDictionary *textAttrs=[NSMutableDictionary dictionary];

    textAttrs[NSForegroundColorAttributeName]=LFColor(123, 123, 123);

    [childVC.tabBarItem setTitleTextAttributes:textAttrs forState:UIControlStateNormal];

    

    NSMutableDictionary *selectTextAttrs=[NSMutableDictionary dictionary];

    selectTextAttrs[NSForegroundColorAttributeName]=[UIColor orangeColor];

    [childVC.tabBarItem setTitleTextAttributes:selectTextAttrs forState:UIControlStateSelected];

    childVC.view.backgroundColor=LFRandomColor;

    

    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:childVC];

    [self addChildViewController:nav];

}

 在AppDelegate.m文件中添加

   self.window.rootViewController=[[LFTabbarViewController alloc]init];就行了

运行效果截图：