TabbarDemo.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    // 拼车族导航
    CarSharingViewController* carSharingViewController = [[CarSharingViewController alloc] init];
    UINavigationController* mainNav = [[UINavigationController alloc] initWithRootViewController:carSharingViewController];
    UIImage *image = [UIImage imageNamed:@"CarSharingNavBG.png"];
    [mainNav.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
    // 立即用车导航
    UIImage *navBarImage = [UIImage imageNamed:@"nav-bar.png"];
    getTaxiHistoryViewController* immediateUseViewController = [[getTaxiHistoryViewController alloc] init];
    UINavigationController* immediateCarNav = [[UINavigationController alloc] initWithRootViewController:immediateUseViewController];
    [immediateCarNav.navigationBar setBackgroundImage:navBarImage forBarMetrics:UIBarMetricsDefault];
    // 预定用车导航
    orderHistoryViewController* reservedTaxiViewController = [[orderHistoryViewController alloc] init];
    UINavigationController* reservedTaxiNav = [[UINavigationController alloc] initWithRootViewController:reservedTaxiViewController];
    [reservedTaxiNav.navigationBar setBackgroundImage:navBarImage forBarMetrics:UIBarMetricsDefault];
    // 我的订单导航
    PassengerOrderCenterViewController* myOrderViewController = [PassengerOrderCenterViewController defaultInfoCenter];
    MyNavController* myOrderNav = [[MyNavController alloc] initWithRootViewController:myOrderViewController];
    [myOrderNav.navigationBar setBackgroundImage:navBarImage forBarMetrics:UIBarMetricsDefault];
    // 设置导航
    SetViewController* settingViewController = [[SetViewController alloc] init];
    UINavigationController* settingNav = [[UINavigationController alloc] initWithRootViewController:settingViewController];
    [settingNav.navigationBar setBackgroundImage:navBarImage forBarMetrics:UIBarMetricsDefault];
    
    self.delegate = self;
    self.viewControllers = [[NSArray alloc] initWithObjects:mainNav, immediateCarNav, reservedTaxiNav, myOrderNav, settingNav, nil];
    self.tabBar.backgroundImage = [UIImage imageNamed:@"tabbarBG.png"];
    self.tabBar.selectionIndicatorImage = [UIImage imageNamed:@"selectedItem.png"];
    [[UITabBarItem appearance] setTitleTextAttributes:@{ UITextAttributeTextColor : COLOR(32, 149, 188) }
                                             forState:UIControlStateSelected];
}

- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {
    if (item == [tabBar.items objectAtIndex:3]) {
        [[PassengerOrderCenterViewController defaultInfoCenter] clearAllAlert];
    }
}