设置UITabBarController的用法

#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