Ios 如何以编程方式使用Swift 3在所有视图控制器中显示选项卡栏?
我不熟悉斯威夫特。如何在不使用情节提要的情况下,以编程方式在swift 3中的所有视图控制器中显示选项卡栏 场景如下所示 1.我有3个视图控制器(例如view1、view2、view3)与选项卡栏相连 2.当我单击view2中的一个按钮时,它会导航到另一个视图控制器(比如view4),而在view4中,选项卡栏不会出现 我在视图控制器(比如homeView)中添加了选项卡栏 这是我在homeView的viewDidLoad()中的代码Ios 如何以编程方式使用Swift 3在所有视图控制器中显示选项卡栏?,ios,swift,swift3,Ios,Swift,Swift3,我不熟悉斯威夫特。如何在不使用情节提要的情况下,以编程方式在swift 3中的所有视图控制器中显示选项卡栏 场景如下所示 1.我有3个视图控制器(例如view1、view2、view3)与选项卡栏相连 2.当我单击view2中的一个按钮时,它会导航到另一个视图控制器(比如view4),而在view4中,选项卡栏不会出现 我在视图控制器(比如homeView)中添加了选项卡栏 这是我在homeView的viewDidLoad()中的代码 // Create Tab one let ho
// Create Tab one
let homeviewController = view1()
let homeTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconHome"), selectedImage: UIImage(named: "iconHome@3x"))
homeviewController.tabBarItem = homeTabBarItem
homeviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
// Create Tab two
let categoryviewController = view2()
let categoryTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconBrowse"), selectedImage: UIImage(named: "iconBrowse@3x"))
categoryviewController.tabBarItem = categoryTabBarItem
categoryviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
// Create Tab three
let userprofviewController = view3()
let userTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconProfile@3x"), selectedImage: UIImage(named: "iconProfile"))
userprofviewController.tabBarItem = userTabBarItem
userprofviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
UITabBar.appearance().barTintColor = UIColor.black
UITabBar.appearance().itemPositioning = .fill
self.viewControllers = [homeviewController, categoryviewController, userprofviewController]
提前感谢您可以在下面尝试
class CustomTabBarController: UITabBarController,UITabBarControllerDelegate {
override func viewDidLoad()
{
super.viewDidLoad()
self.delegate = self
viewControllers = [ setViewController( “Tab 1”, imageName: “ic_tab1”), setViewController( "Tab 2”, imageName: “ic_Tab2”) , setViewController( "Tab 3”, imageName: "ic_Tab3”) , setViewController("Tab 4”, imageName: “ic_Tab4”)]
}
fileprivate func createDummyNavControllerWithTitle(_ title: String, imageName: String) -> UINavigationController {
let viewController = UIViewController()
let navController = UINavigationController(rootViewController: viewController)
navController.tabBarItem.title = title
navController.tabBarItem.image = UIImage(named: imageName)
return navController
}
fileprivate func setViewController( _ title: String, imageName: String) -> UINavigationController {
let layout = UICollectionViewFlowLayout()
let list = ListController(collectionViewLayout: layout)
list.navtTitle = title
let navController = UINavigationController(rootViewController: list)
navController.tabBarItem.title = title
list.isContactsScreen = true
navController.tabBarItem.image = UIImage(named: imageName)
return recentMessagesNavController
}
override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
// print("Selected item")
}
func tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController) {
// print("Selected view controller")
}
}
不要将ViewController直接带到self.viewController,而是按如下方式带到UINavigationController
// Create Tab one
let homeviewController = view1()
let homeTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconHome"), selectedImage: UIImage(named: "iconHome@3x"))
homeviewController.tabBarItem = homeTabBarItem
homeviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
let navHome = UINavigationController.init(rootViewController: homeviewController)
// Create Tab two
let categoryviewController = view2()
let categoryTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconBrowse"), selectedImage: UIImage(named: "iconBrowse@3x"))
categoryviewController.tabBarItem = categoryTabBarItem
categoryviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
let navCategory = UINavigationController.init(rootViewController: categoryviewController)
// Create Tab three
let userprofviewController = view3()
let userTabBarItem = UITabBarItem(title: nil, image: UIImage(named: "iconProfile@3x"), selectedImage: UIImage(named: "iconProfile"))
userprofviewController.tabBarItem = userTabBarItem
userprofviewController.tabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0)
let navUserPrfl = UINavigationController.init(rootViewController: userprofviewController)
UITabBar.appearance().barTintColor = UIColor.black
UITabBar.appearance().itemPositioning = .fill
self.viewControllers = [navHome, navCategory, navUserPrfl]
谢谢拉胡尔的回复。但是ListController函数和recentMessagesNavController是未定义的ListController应该是您要加载的viewcontroller(在我的例子中,我加载的是collectionview显示列表,所以它被命名为ListController),它应该返回NavControllerHanks Manikanta作为您有价值的回复,而不是recentMessagesNavController,但是,如您所述,使用UINavigationController会出现以下错误:由于未捕获的异常“NSInvalidArgumentException”而终止应用程序,原因:“不支持推送导航控制器”Hi Rama Mahapatra,请在初始化Tabbar的地方共享您的代码。