无限循环和线程1：EXC_BAD_ACCESS代码= 2，地址= 0x7ffeedaec488

如何解决无限循环和线程1：EXC_BAD_ACCESS代码= 2，地址= 0x7ffeedaec488

我在线程上获取了线程1：EXC_BAD_ACCESS（代码= 2，地址= 0x7fFeedaec488），位于tabBar.viewControllers = [cameraVC，galleryVC]的数组中，在控制台中，我的用户名无休止地打印了出来，来自不同的阶层。第一个代码段显示了线程的显示位置：

func addTabBar() {
    let cameraVC = HomeViewController()
    let galleryVC = galleryViewController()

    let tabBarItem1 = UITabBarItem(title: "Camera",image: UIImage(named: "camera-icon")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal),selectedImage: UIImage(named: "blueCamera-icon")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal))
    let tabBarItem2 = UITabBarItem(title: "gallery",image: UIImage(named: "gallery-icon")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal),selectedImage: UIImage(named: "bluegallery-icon")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal))



    cameraVC.tabBarItem = tabBarItem1
    galleryVC.tabBarItem = tabBarItem2
    tabBarItem2.imageInsets = UIEdgeInsets(top: 0,left: 0,bottom: -6,right: 0)

    tabBar.viewControllers = [cameraVC,galleryVC]

    self.view.addSubview(tabBar.view)
}

这是我的第二个代码段，其中定义了所有功能，我在控制台中不断重复获取用户名的打印语句：

@IBAction func signUpTapped(_ sender: Any) {
    //validate the fields
    let error = validateFields()
    
    if error != nil {
        //something's wrong,show error message
        showError(error!)
    }
    else {
        
        //create trimmed data
        let userName = userNameTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
        let email = emailTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
        let password = passwordTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
        //create the user
        Auth.auth().createuser(withEmail: email,password: password) { (result,err) in
            
            //check for errors
            if err != nil {
                //error creating user
                self.showError(err?.localizedDescription ?? "Error creating user")
            }
            else {
                    let changeRequest = Auth.auth().currentUser?.createProfileChangeRequest()
                    changeRequest?.displayName = userName
                    print(userName)
                changeRequest?.commitChanges { (error) in print ("Username not created") }

                //transition to home screen
                self.saveLoggedState()
                self.transitionHome()
            }
        }
    }
}
func showError(_ message:String){
    
    errorLabel.text = message
    errorLabel.alpha = 1
}
func saveLoggedState() {
    
    let def = UserDefaults.standard
    def.set(true,forKey: "is_authenticated")
    def.synchronize()
    
}
func transitionHome() {
    
    let homeVC = self.storyboard?.instantiateViewController(identifier: Constants.Storyboard.homeViewController) as? HomeViewController
    self.view.window?.rootViewController = UINavigationController(rootViewController: homeVC!)
    self.view.window?.makeKeyAndVisible()
    
}

我希望足够的代码！我真的对问题是什么感到困惑，并且以前的堆栈溢出帖子没有帮助。任何帮助将不胜感激。谢谢！

编辑1：我还在家庭控制器中实现了侧面菜单。它的代码如下：

override func viewDidLoad() {
    super.viewDidLoad()
    tableView.backgroundColor = color
    view.backgroundColor = color
    tableView.tableFooterView = UIView()
}

// Table
override func tableView(_ tableView: UITableView,numberOfRowsInSection section: Int) -> Int {
    return menuItems.count
}

override func tableView(_ tableView: UITableView,cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell",for: indexPath)
    cell.textLabel?.text = menuItems[indexPath.row].rawValue
    cell.textLabel?.textColor = .white
    cell.backgroundColor = color
    cell.contentView.backgroundColor = color
    return cell
}

override func tableView(_ tableView: UITableView,didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath,animated: true)
    // Relay to delegate about menu item selection
    let selectedItem = menuItems[indexPath.row]
    delegate?.didSelectMenuItem(named: selectedItem)
}

解决方法

func addTabBar() {
   let cameraVC = HomeViewController()
   let galleryVC = GalleryViewController()
}

我想这是一个错字，您在HomeViewController内创建HomeViewController，这会导致无限循环，而且我认为您的Auth在viewViewAppear / didLoad内部被调用，因此它会无限触发，直到堆栈溢出为止。

如果不是这种情况，我猜您的HomeViewController会触发signUpTapped，然后在用户创建时返回HomeViewController（再次触发signUpTapped），因此递归没有结束。