如何使标签栏应用程序脱离独立的NIB？

Question

我必须通过另一个表视图菜单列表中访问5独立表视图控制器nibs（通过自定义单元实现）（无故事板）

客户希望在所有选项卡5 nibs。所以我需要摆脱菜单列表并在TAB中提供nibs。

我该怎么做？

Answer 1

首先这个属性添加到您的AppDelegate.h

@property (strong, nonatomic) UITabBarController *tabBarController; 

使设置视图的方法和设置您的TabBar一样：

-(void)setViews 
{ 
    UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] ; 
    UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil]; 
    UIViewController *viewController3 = [[ThirdViewController alloc] initWithNibName:@"ThirdViewController" bundle:nil]; 
    UIViewController *viewController4 = [[FourthViewController alloc] initWithNibName:@"FourthViewController" bundle:nil]; 
    UIViewController *viewController5 = [[FifthViewController alloc] initWithNibName:@"FifthViewController" bundle:nil]; 

    UINavigationController *navigationController1=[[UINavigationController alloc]initWithRootViewController:viewController1]; 
    [navigationController1.navigationBar setBackgroundImage:[UIImage imageNamed:@"upwhitebg.png"] forBarMetrics:UIBarMetricsDefault]; 

    UINavigationController *navigationController2=[[UINavigationController alloc]initWithRootViewController:viewController2]; 
    [navigationController2.navigationBar setBackgroundImage:[UIImage imageNamed:@"upwhitebg.png"] forBarMetrics:UIBarMetricsDefault]; 

    UINavigationController *navigationController3=[[UINavigationController alloc]initWithRootViewController:viewController3]; 
    [navigationController3.navigationBar setBackgroundImage:[UIImage imageNamed:@"upwhitebg.png"] forBarMetrics:UIBarMetricsDefault]; 

    UINavigationController *navigationController4=[[UINavigationController alloc]initWithRootViewController:viewController4]; 
    [navigationController4.navigationBar setBackgroundImage:[UIImage imageNamed:@"upwhitebg.png"] forBarMetrics:UIBarMetricsDefault]; 

    UINavigationController *navigationController5=[[UINavigationController alloc]initWithRootViewController:viewController5]; 
    [navigationController5.navigationBar setBackgroundImage:[UIImage imageNamed:@"upwhitebg.png"] forBarMetrics:UIBarMetricsDefault]; 


    [navigationController1.navigationBar setHidden:YES]; 
    [navigationController2.navigationBar setHidden:YES]; 
    [navigationController3.navigationBar setHidden:YES]; 
    [navigationController4.navigationBar setHidden:YES]; 
    [navigationController5.navigationBar setHidden:YES]; 


    self.tabBarController = [[UITabBarController alloc] init]; 
    [self.tabBarController.tabBar setBackgroundColor:[UIColor clearColor]]; 

    self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar"]; 
    [[[self tabBarController]tabBar]setSelectionIndicatorImage:[UIImage imageNamed:@"transparent.png"]]; 
    [self.tabBarController setDelegate:self]; 
    self.tabBarController.viewControllers = @[navigationController1, navigationController2,navigationController3,navigationController4,navigationController5]; 
    self.window.rootViewController = self.tabBarController; 
} 

避免设定图像和setHidden如果您不想或不想制作自定义导航栏。 并在您的didFinishLaunchingWithOptions中调用此方法。

现在设立的TabBar的委托方法，您可以设置自定义图像那边：

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController 
{ 
    if (tabBarController.selectedIndex == 0) 
    { 
     self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar-1"]; 
    } 
    else if (tabBarController.selectedIndex == 1) 
    { 
     self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar-2"]; 
    } 
    else if (tabBarController.selectedIndex == 2) 
    { 
     self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar-3"]; 
    } 
    else if (tabBarController.selectedIndex == 3) 
    { 
     self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar-4"]; 
    } 
    else if (tabBarController.selectedIndex == 4) 
    { 
     self.tabBarController.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar-5"]; 
    } 
} 

Answer 2

我会将它放在主要的笔尖/故事板中，但它更容易在代码中显示。您可以用通常的方式创建视图控制器（再次，笔尖或故事板或代码）。

UITabBarController *tabBarController = [[UITabBarController alloc] init]; 
    [tabBarController setViewControllers:@[vc1, vc2, vc3, vc4, vc5] animated:YES]; 
    UIWindow *window = [[UIApplication sharedApplication] delegate].window; 
    [window setRootViewController:tabBarController];