从所有视图控制器使用的复杂 UITabbarcontroller 调用函数

Question

我有一个问题需要时间来解决...这是关于我的 UITabBarController class 与其拥有的其余视图控制器交互的方式。

这就是我对我的申请的想法。不知道是不是最方便，所以才求助

首先。在我的场景委托中，我有：

guard let windowScene = (scene as? UIWindowScene) else { return }
        window = UIWindow(windowScene: windowScene)
        window?.makeKeyAndVisible()
        window?.rootViewController = TabBar()

*TabBar 是我自定义的 Class UITabBarController。

我的目标是让一个 User 类型在调用需要它的函数时在所有视图控制器中更新。

我尝试了 TabBar() 的 addchild 和协议，但我无法正确设置它。

基本方案

场景代表
标签栏

从数据库接收用户信息并将其保存在用户类型变量中。
我定义视图控制器[HomeController, ProfileCont....] 并传递用户类型

当我在 Profile 控制器中（例如），并且用户单击一个按钮时，我希望我的 TabBar 的 User 变量被更新，并且也在 Home Controller ProfileController 中更新.. ..（全部）

抱歉，文字太多，但我想以最好的方式解释它。

我附上一些代码。

感谢您的帮助！

    class TabBar: UITabBarController {
        
        private var user: User?
        
        override func viewDidLoad() {
            super.viewDidLoad()
            
            view.backgroundColor = .white
            UITabBar.appearance().backgroundColor = .white
            UITabBar.appearance().unselectedItemTintColor = .lightGray
            tabBar.tintColor = .black
    
            fetchUserData()
            
        }
        
        func fetchUserData() {
            print("hey")
            guard let currentUid = Auth.auth().currentUser?.uid else { return }
            Service.shared.fetchUserData(uid: currentUid) { user in
                self.user = user
                self.setupVCs()
            }
        }
    
        func setupVCs() {
            
            guard let user = self.user else { return }
            
            viewControllers = [
                
                createNavController(for: HomeController(user: user), title: NSLocalizedString("Pedidos", comment: ""), image: UIImage(named: "pedidos")!),
                createNavController(for: SignUpController(), title: NSLocalizedString("Mapa", comment: ""), image: UIImage(named: "location")!),
                createNavController(for: InformePeriodos(user: user), title: NSLocalizedString("Ganancias", comment: ""), image: UIImage(named: "euro")!),
                createNavController(for: RetirarEfectivo(user: user), title: NSLocalizedString("Agenda", comment: ""), image: UIImage(named: "calendar")!),
                createNavController(for: PerfilController(user: user), title: NSLocalizedString("Perfil", comment: ""), image: UIImage(named: "person")!)
                
            ]
            
        }
      
       
        fileprivate func createNavController(for rootViewController: UIViewController,title: String,image: UIImage) -> UIViewController {
            let navController = UINavigationController(rootViewController: rootViewController)
            navController.tabBarItem.title = title
            navController.tabBarItem.image = image
            return navController
            
        }
    
       
    }

这是我的配置文件控制器按钮操作

    @objc func confirmar(){
                
           //efectivo, and gP and retiro are some data
           DriverService.shared.updateRetiro(efectivo: saldoEfectivo, gP: gananciasPagadas, retiro: doubleinputValue) {
                
                guard let currentUid = Auth.auth().currentUser?.uid else { return }
                Service.shared.fetchUserData(uid: currentUid) { user in
                    self.user = user
                    self.configureUI()
                    //i need to call FETCHUSERDATA FROM MY TABBAR HERE?
                    self.removeSpinner()
                }
                
           }
                          
     }

我认为在我的 profileController 中调用 fetchuserdata 可以解决部分问题

Answer 1

我post解决方案如果能帮助遇到同样问题的每个人

    import UIKit
    import Firebase
    import CoreLocation

    class TabBar: UITabBarController {
        
        private var user: User?
        
        override func viewDidLoad() {
            super.viewDidLoad()
            self.overrideUserInterfaceStyle = .light
           
            fetchUserData()
            
            let nc = NotificationCenter.default
            nc.addObserver(self, selector: #selector(updateUser), name: NSNotification.Name(rawValue: "updateUser"), object: nil)

        }
        
        
        @objc func updateUser() {
            
            print("updateUser")
            guard let currentUid = Auth.auth().currentUser?.uid else { return }
            Service.shared.fetchUserData(uid: currentUid) { user in
                self.user = user
                self.setupVCs()
            }
            
        }
       
        
        // MARK: - Helper Functions
      
        func fetchUserData() {
            print("hey")
            guard let currentUid = Auth.auth().currentUser?.uid else { return }
            Service.shared.fetchUserData(uid: currentUid) { user in
                self.user = user
                self.setupVCs()
            }
        }

        func setupVCs() {
            
            guard let user = self.user else { return }
            
            viewControllers = [
                
                createNavController(for: HomeController(user: user), title: NSLocalizedString("Pedidos", comment: ""), image: UIImage(named: "pedidos")!),
                createNavController(for: RiderMap(user: user), title: NSLocalizedString("Mapa", comment: ""), image: UIImage(named: "location")!),
                createNavController(for: InformePeriodos(user: user), title: NSLocalizedString("Ganancias", comment: ""), image: UIImage(named: "euro")!),
                createNavController(for: CalendarController(user: user), title: NSLocalizedString("Agenda", comment: ""), image: UIImage(named: "calendar")!),
                createNavController(for: PerfilController(user: user), title: NSLocalizedString("Perfil", comment: ""), image: UIImage(named: "person")!)
                
            ]
            
        }
        
        override var preferredStatusBarStyle: UIStatusBarStyle {
            .lightContent
        }
        override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
            return .slide
        }
        
       
        fileprivate func createNavController(for rootViewController: UIViewController,
                                                          title: String,
                                                          image: UIImage) -> UIViewController {
            
           
            let navController = UINavigationController(rootViewController: rootViewController)
            navController.tabBarItem.title = title
            navController.tabBarItem.image = image
            return navController
            
        }
      

    }

然后...从其他视图控制器（无委托）向此标签栏发送通知的函数

@objc func updateUser(){
       
       NotificationCenter.default.post(name: NSNotification.Name(rawValue: "updateUser"), object: nil)     
           
 }

从所有视图控制器使用的复杂 UITabbarcontroller 调用函数

Call a function from complex UITabbarcontroller that all view controllers use

ios

swift

uitabbarcontroller