使用 Xcode 11.3.1 构建后打开时应用程序崩溃

Question

升级到 Xcode 11.3.1 后，我们注意到我们的应用在某些设备上打开时开始崩溃。它发生在不同的 iOS 版本和 iPhone 型号上。但是，在具有相同 iOS 版本或 iPhone 型号的某些设备上，该应用程序运行正常。

在这些设备上安装较早版本的应用程序时（使用较早 Xcode 版本构建）不会发生崩溃。

在调试时我们发现当使用我们的登录模块的演示者试图打开 Optional 时会发生崩溃。这个演示者在创建和分配时有一个值，但是在 AppDelegate window.rootViewController = navigationController 中设置我们的 rootViewController 后，执行跳转到下面显示的 viewDidLoad() 函数，此时演示者是 nil.

class LoginViewController: LoginPasswordResetViewController {
    var presenter: LoginPresenterProtocol!

    override func viewDidLoad() {
        super.viewDidLoad()

        updateUI(model: presenter.loadViewModel())
        presenter.viewDidLoad()
    }
}

AppDelegate.swift中的相关代码：

class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?

func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

    let env = Environment()

    if let app = UIApplication.shared.delegate as? AppDelegate,
        let window = app.window,
        let loginVC = LoginModule().createModule(moduleData: LoginModuleData(env: env),
                                                 service: LoginService(env: env),
                                                 storageService: LocalStorageService(env: env)) {

        let navigationController = UINavigationController(rootViewController: loginVC)

        window.rootViewController = navigationController
        window.makeKeyAndVisible()
    }
    return true
}

我尝试使用此处提到的 SceneDelegate.swift 来设置 RootViewController，但没有成功。

关于这个问题的可能原因有什么想法吗？

附加信息：

createModule 函数初始化并设置 presenter:

func createModule(moduleData: LoginModuleDataProtocol, service: LoginServiceProtocol, storageService: LocalStorageServiceProtocol) -> LoginViewController? {
    guard let viewController: LoginViewController = UIStoryboard.viewController(from: self) else {
        return nil
    }
    let presenter = LoginPresenter()
    let interactor = LoginInteractor()
    let router = LoginRouter()

    // VC
    viewController.presenter = presenter
    // Presenter
    presenter.viewController = viewController
    presenter.interactor = interactor
    presenter.router = router
    // Interactor
    interactor.presenter = presenter
    interactor.dataManager = LoginDataManager(data: moduleData, service: service, storageService: storageService)
    // Router
    router.viewController = viewController

    return viewController
}

创建模块后，loginVC 变量具有应有的 presenter 值，但是一旦我们分配 window.rootViewController = navigationController，presenter 的值就是 nil.

Answer 1

我成功了。我必须使用 SceneDelegate 加载组件才能在 iOS 13 but I only managed to make it work after reading 时启动我的应用程序。

所以这是对我有用的结果：

SceneDelegate.swift:

import UIKit
@available(iOS 13.0, *)
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    var window: UIWindow?

    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        let env = Environment()

        if let windowScene = scene as? UIWindowScene,
            let loginVC = LoginModule().createModule(moduleData: LoginModuleData(env: env),
                                                     service: LoginService(env: env),
                                                     storageService: LocalStorageService(env: env)) {
            self.window = UIWindow(windowScene: windowScene)
            self.window!.rootViewController = UINavigationController(rootViewController: loginVC)
            self.window!.makeKeyAndVisible()
        }
    }
}

AppDelegate.swift:

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?

    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        if #available(iOS 13.0, *) {} else {
            let env = Environment()

            if let app = UIApplication.shared.delegate as? AppDelegate,
                let window = app.window,
                let loginVC = LoginModule().createModule(moduleData: LoginModuleData(env: env),
                                                         service: LoginService(env: env),
                                                         storageService: LocalStorageService(env: env)) {
                window.rootViewController = UINavigationController(rootViewController: loginVC)
                window.makeKeyAndVisible()
            }
        }
        return true
    }

使用 Xcode 11.3.1 构建后打开时应用程序崩溃

App crashes when opening after building it with Xcode 11.3.1

iphone

xcode

ios

swift

ios13.3