在 viewcontroller 上放置一个 Tabbar 控制器

Question

如何将 TABBAR 控件放置在视图控件的顶部。默认情况下它在底部。我如何将其放置..？

使用以下代码：

 UIImage* tabBarBackground = [UIImage imageNamed:@"footer-bg.png"];
[[UITabBar appearance] setBackgroundImage:tabBarBackground];
[[UITabBar appearance]setSelectionIndicatorImage:[UIImage imageNamed:@"footer-hover-bg.png"]];

if(IS_IOS_7)
{
    [[appDelegate.tabBarController tabBar] setSelectionIndicatorImage:[UIImage imageNamed:@"footer-hover-bg.png"]];
    [[UITabBar appearance] setTintColor:[UIColor blackColor]];
}
appDelegate.tabBarController.tabBar.frame = CGRectMake(0, 20, 320, 50);
appDelegate.tabBarController.delegate=self;

UIView *view=[[UIView alloc]initWithFrame:CGRectMake(0, -20, 320, 600)];

viewControllers = [[NSMutableArray alloc] init];

MainViewController *view1 = [[MainViewController alloc] init];
UINavigationController *nav1=[[UINavigationController alloc]initWithRootViewController:view1];
[viewControllers addObject:nav1];

ViewController1 *view2 = [[ViewController1 alloc] init];
UINavigationController *nav2=[[UINavigationController alloc]initWithRootViewController:view2];
[viewControllers addObject:nav2];

[appDelegate.tabBarController setViewControllers:viewControllers];

appDelegate.tabBarController.tabBarController.view.frame=CGRectMake(0, 0, 320, 480);
[view addSubview:appDelegate.tabBarController.view];

[self.view addSubview:view];

UITabBarItem *tabBarItem1 = [appDelegate.tabBarController.tabBar.items objectAtIndex:0];
UITabBarItem *tabBarItem2 = [appDelegate.tabBarController.tabBar.items objectAtIndex:1];


[tabBarItem1 setFinishedSelectedImage:[UIImage imageNamed:[arraySelectedImages objectAtIndex:0]] withFinishedUnselectedImage:[UIImage imageNamed:[arrayUnselectedImages objectAtIndex:0]]];
[tabBarItem2 setFinishedSelectedImage:[UIImage imageNamed:[arraySelectedImages objectAtIndex:1]] withFinishedUnselectedImage:[UIImage imageNamed:[arrayUnselectedImages objectAtIndex:1]]];

我如何使用故事板做同样的事情？

Answer 1

首先添加UIViewController，然后添加UITabBar，如果使用自动布局，则添加约束。

别忘了连接代理。

希望这会有所帮助。