设置UITabBarController的用法

   设置UITabBarController的用法的一个示例

#import "TabBarCtrl.h"
#import "HomeCtrl.h"
#import "TrainCtrl.h"
#import "WeatherCtrl.h"

@interface TabBarCtrl ()

@end

@implementation TabBarCtrl

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //设置控制器的文字和图片
    UIStoryboard *homeStory = [UIStoryboard storyboardWithName:@"HomeCtrl" bundle:nil];
    //装载Storyboard中的ViewController
    HomeCtrl *homeCtrl = [homeStory instantiateViewControllerWithIdentifier:@"HomeCtrlId"];
    [self addChildCtrl:homeCtrl title:@"站点查询" image:@"tabbar_home.png" selectedImage:@"tabbar_home_selected.png"];
    
    UIStoryboard *trainStory = [UIStoryboard storyboardWithName:@"TrainCtrl" bundle:nil];
    TrainCtrl *trainCtrl = [trainStory instantiateViewControllerWithIdentifier:@"TrainCtrlId"];
    [self addChildCtrl:trainCtrl title:@"车次查询" image:@"tabbar_query.png" selectedImage:@"tabbar_query_selected.png"];
    
    UIStoryboard *weatherStory = [UIStoryboard storyboardWithName:@"WeatherCtrl" bundle:nil];
    WeatherCtrl *weatherCtrl = [weatherStory instantiateViewControllerWithIdentifier:@"WeatherCtrlId"];
    [self addChildCtrl:weatherCtrl title:@"天气查询" image:@"1.gif" selectedImage:@"1.gif"];
    
}



- (void) addChildCtrl:(UIViewController *)childCtrl title:(NSString *) title image:(NSString *) image selectedImage:(NSString *) selectedImage
{
    //设置控制器的文字和图片
    childCtrl.title = title;
    //    childCtrl.tabBarItem.title = title;
    //    childCtrl.navigationItem.title = title;
    childCtrl.tabBarItem.image = [UIImage imageNamed:image];
    childCtrl.tabBarItem.selectedImage = [[UIImage imageNamed:selectedImage] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    //设置文字的样式
    NSMutableDictionary *SelectedTextAttrs = [NSMutableDictionary dictionary];
    
    //下面的这种用法相当于array[下标]，设置<span style="font-family: Menlo;">NSForegroundColorAttributeName的值</span>
    SelectedTextAttrs [NSForegroundColorAttributeName] = [UIColor orangeColor];
    
    [childCtrl.tabBarItem setTitleTextAttributes:SelectedTextAttrs forState:UIControlStateSelected];
    
    UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:childCtrl];
    
    [self addChildViewController:navigation];
    
}

@end

  效果图如下：