新浪微博项目技术之一UI主框架搭建

    HomeViewController *HomeVC = [[HomeViewController alloc] init];
    UINavigationController *HomeNV = [[UINavigationController alloc] initWithRootViewController:HomeVC];
    //tabBarItem标题文字设置
    HomeVC.tabBarItem.title = @"首页";
    HomeVC.tabBarItem.image = [UIImage imageNamed:@"tabbar_home"];
    //这种设置图片的方法可以保持原有颜色
    HomeVC.tabBarItem.selectedImage= [[UIImage imageNamed:@"tabbar_home_selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    [self addChildViewController:HomeNV];
    
    //设置选中状态下的图片颜色--------------------
    NSMutableDictionary *selectTextAttrs = [NSMutableDictionary dictionary];
    selectTextAttrs[NSForegroundColorAttributeName] = [UIColor orangeColor];
    [HomeVC.tabBarItem setTitleTextAttributes:selectTextAttrs forState:UIControlStateSelected];
    //设置正常情况下的文字颜色
    NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
    [HomeVC.tabBarItem setTitleTextAttributes:textAttrs forState:UIControlStateNormal];

-(void)loadTabBarVC
{
    HomeViewController *homeVC = [[HomeViewController alloc]init];
    [self addChildVC:homeVC title:@"首页" image:@"tabbar_home" selectedImage:@"tabbar_home_selected"];
    
    
    MessageViewController *MessageVC = [[MessageViewController alloc]init];
    [self addChildVC:MessageVC title:@"消息" image:@"tabbar_message_center" selectedImage:@"tabbar_message_center_selected"]; //调用方法
    
    
    DiscoverViewController *DiscoverVC = [[DiscoverViewController alloc]init];
    [self addChildVC:DiscoverVC title:@"发现" image:@"tabbar_discover" selectedImage:@"tabbar_discover_selected"];
    
    
    ProflieViewController *ProflieVC = [[ProflieViewController alloc]init];
    [self addChildVC:ProflieVC title:@"我" image:@"tabbar_profile" selectedImage:@"tabbar_profile_selected"];
    

}



/*
 添加一个子控制器
 1.子控制器 childVC
 2.标题  title
 3.图片  image
 4.选中的图片   selectedImage
 
 
 */

-(void)addChildVC:(UIViewController *)childVC title:(NSString *)title image:(NSString *)image selectedImage:(NSString *)selectedImage
{
    childVC.title = title; //同时设置tabBar和navigationBar的文字
//    childVC.tabBarItem.title = title;  //设置tabBar的文字
//    childVC.navigationItem.title = title;  //设置navigationBar的文字
    
    //设置子控制器的图片
    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] = KColor(123, 123, 123);
    NSMutableDictionary *selectTextAtrs = [NSMutableDictionary dictionary];
    selectTextAtrs[NSForegroundColorAttributeName] = [UIColor orangeColor];
    
    [childVC.tabBarItem setTitleTextAttributes:textAttrs forState:UIControlStateNormal];
    [childVC.tabBarItem setTitleTextAttributes:selectTextAtrs forState:UIControlStateSelected];
    childVC.view.backgroundColor = KRandomColor;
    
    
    //先给外面传进来的先控制器 包装 一个导航控制器
    
    NavigationController *navigationNV = [[NavigationController alloc] initWithRootViewController:childVC];
    //添加为子控制器
    [self addChildViewController:navigationNV];
    


}