Swinject 容器注册失败

Posted 2023-03-22

【中文标题】Swinject 容器注册失败

【英文标题】：Swinject container registration fails

【发布时间】：2018-05-23 07:43:12

【问题描述】：

在尝试将一些协议绑定到各种类时，我遇到了在协议中获取nil 的奇怪行为。 这是依赖注入器类：

class DependencyInjector: NSObject 
    
    let container: Container
    
    override init() 
        container = Container()
        super.init()
        register()
    


extension DependencyInjector 
    
    func register() 
        container.register(NetworkProtocols.self)  _ in ApiManager() .inObjectScope(.container)
        container.register(ConnectivityManager.self)  r in
            let controller = ConnectivityManager()
            controller.network = r.resolve(NetworkProtocols.self)
            return controller
        
        
        container.storyboardInitCompleted(ChooseCameraViewController.self) r,c in
            c.network = r.resolve(NetworkProtocols.self)
        
        
        container.storyboardInitCompleted(InstallationViewController.self) r,c in
            c.network = r.resolve(NetworkProtocols.self)
        
        
        container.storyboardInitCompleted(CameraSetupViewController.self) r,c in
            c.network = r.resolve(NetworkProtocols.self)
        
        
        container.storyboardInitCompleted(LoginViewController.self)  r,c in
            c.network = r.resolve(NetworkProtocols.self)
        
    
 

这是AppDelegate：

var dependencyInjector: DependencyInjector!

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool 
    // Override point for customization after application launch.        
    dependencyInjector = DependencyInjector()
    
    let window = UIWindow(frame: UIScreen.main.bounds)
    self.window = window
    let bundle = Bundle(for: ViewController.self)
    let storyboard = SwinjectStoryboard.create(name: "Main", bundle: bundle, container: dependencyInjector.container)
    window.rootViewController = storyboard.instantiateInitialViewController()
    
    return true

在下面的类中，我在协议属性中得到nil：

class ConnectivityManager: NSObject 
    
    var network: NetworkProtocols!
    
    func connectHotSpot() 
        self.network.whoAmI(success: 
            print("api succses")
        , failure:  (error) in
            print(error.localizedDescription)
        )
    

网络变量始终为nil，而在其他使用storyboardInitCompleted 的类中，网络变量有效。

我做错了什么？

【问题讨论】：

如何获取ConnectivityManager的实例？我在您提供的代码中没有看到 resolve(ConectivityManager.self)。

@JakubVano 感谢您的提示，答案如下

【参考方案1】：

正如@JakubVano 所说，我必须获得ConnectivityManager 的实例：

    container.register(ConnectivityManager.self)  r in
        let controller = ConnectivityManager()
        controller.network = r.resolve(NetworkProtocols.self)
        return controller
    

   container.storyboardInitCompleted(ChooseCameraViewController.self) r,c in
    c.connectivityManager = r.resolve(ConnectivityManager.self)!