<span style="font-family: Arial, Helvetica, sans-serif;"></span><pre name="code" class="objc">- (void)initTabBar

{

    //    初始化主页

    HomePageViewController *homePage = [[HomePageViewController alloc]init];

    UINavigationController *homePageNav = [[UINavigationController alloc]initWithRootViewController:homePage];

    //    推断是否存在用户存储的城市

    NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];

    if (![userDefault objectForKey:@"cityDic"]) {

        CitySelectionViewController *citySelection = [[CitySelectionViewController alloc]init];

        [homePageNav pushViewController:citySelection animated:YES];

    }

    // 设置主页-TabBar

    UITabBarItem *itemHomePage= [[UITabBarItem alloc] initWithTitle:@"首页" image:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.png"] scaledToSize:CGSizeMake(25, 25)] tag:0];

    [itemHomePage setFinishedSelectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.jpg"] scaledToSize:CGSizeMake(25, 25)] withFinishedUnselectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-2.jpg"] scaledToSize:CGSizeMake(25, 25)]];

    homePageNav.tabBarItem=itemHomePage;

    [itemHomePage setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:NAVBACKGROUNDCOLOR,UITextAttributeTextColor, nil] forState:UIControlStateSelected];

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO([NSString stringWithFormat:@"7.0"])) {

        [homePageNav.navigationBar setBarTintColor:NAVBACKGROUNDCOLOR];

    }else

    {

        [homePageNav.navigationBar setTintColor:NAVBACKGROUNDCOLOR];

    }

    homePageNav.navigationBar.translucent = NO;

//    初始化我的购物车

    ShoppingCartViewController *shoppingCart = [[ShoppingCartViewController alloc]init];

    UINavigationController *shoppingCartNav = [[UINavigationController alloc]initWithRootViewController:shoppingCart];

    // 设置购物车-TabBar

    UITabBarItem *itemShoppingCart= [[UITabBarItem alloc] initWithTitle:@"我的购物车" image:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.png"] scaledToSize:CGSizeMake(25, 25)] tag:0];

    [itemShoppingCart setFinishedSelectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.jpg"] scaledToSize:CGSizeMake(25, 25)] withFinishedUnselectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-2.jpg"] scaledToSize:CGSizeMake(25, 25)]];

    shoppingCartNav.tabBarItem=itemShoppingCart;

    [itemShoppingCart setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:NAVBACKGROUNDCOLOR,UITextAttributeTextColor, nil] forState:UIControlStateSelected];

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO([NSString stringWithFormat:@"7.0"])) {

        [shoppingCartNav.navigationBar setBarTintColor:NAVBACKGROUNDCOLOR];

    }else

    {

        [shoppingCartNav.navigationBar setTintColor:NAVBACKGROUNDCOLOR];

    }

    shoppingCartNav.navigationBar.translucent = NO;

    //    初始化我的汇众

    IndividualCenterViewController *individualCenter = [[IndividualCenterViewController alloc]init];

    UINavigationController *individualCenterNav = [[UINavigationController alloc]initWithRootViewController:individualCenter];

    // 设置汇众-TabBar

    UITabBarItem *itemindividualCenter= [[UITabBarItem alloc] initWithTitle:@"我的幸福家" image:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.png"] scaledToSize:CGSizeMake(25, 25)] tag:0];

    [itemindividualCenter setFinishedSelectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-1.jpg"] scaledToSize:CGSizeMake(25, 25)] withFinishedUnselectedImage:[UIImage imageWithImage:[UIImage imageNamed:@"1-2.jpg"] scaledToSize:CGSizeMake(25, 25)]];

    individualCenterNav.tabBarItem=itemindividualCenter;

    [itemindividualCenter setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:NAVBACKGROUNDCOLOR,UITextAttributeTextColor, nil] forState:UIControlStateSelected];

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO([NSString stringWithFormat:@"7.0"])) {

        [individualCenterNav.navigationBar setBarTintColor:NAVBACKGROUNDCOLOR];

    }else

    {

        [individualCenterNav.navigationBar setTintColor:NAVBACKGROUNDCOLOR];

    }

    individualCenterNav.navigationBar.translucent = NO;

    self.tabBar = [[UITabBarController alloc] init];

    [[UITabBar appearance] setBackgroundImage:[UIImage setBackgroundImageByColor:COLOR(255, 255, 255, 1) withFrame:RectWithPara(0, 0, SCREEN_WIDTH, 44)]];  // 设置UITabBar背景图片

    [[UITabBar appearance] setSelectionIndicatorImage:

    [UIImage imageWithTint:COLOR(235, 235, 235, 1)]];

    self.tabBar.viewControllers = [NSArray arrayWithObjects:homePageNav,shoppingCartNav,individualCenterNav, nil];

}

<span style="font-family: Arial, Helvetica, sans-serif;">在程序启动时设置根控制器为 tabbar,例如以下</span>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary
*)launchOptions

{

self.window = [[UIWindow
alloc] initWithFrame:[[UIScreen
mainScreen] bounds]];

[self
initTabBar];

self.window.rootViewController =
self.tabBar;

self.window.backgroundColor = [UIColor
whiteColor];

[self.window
makeKeyAndVisible];

return
YES;

}