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我正在尝试使用依赖注入而不是跟随单例。这就是我想要达到的目的。当我运行应用程序时，我在此上出现错误"No "decodeObject" candidates produce the expected contextual result type "ModelManager"。知道如何以正确的方式实现依赖注入吗？

我的模特班：

class ModelManager {
var results: MyCustomClass

init(results: MyCustomClass) {
    self.results = results
}
func update(customDataInfo: MyCustomClass!) {
    self.results = customDataInfo
}
}

MyViewController.swift

class MyViewController: UIViewController {

private let modelManager: ModelManager

init(modelManager: ModelManager) {
    self.modelManager = modelManager
    super.init(nibName: nil, bundle: nil)
    self.modelManager.modelManagerUpdate = self as ModelManagerUpdate
}

 required init?(coder aDecoder: NSCoder) {
    self. modelManager = aDecoder.decodeObject(value(forKey: "modelManager") as ModelManager)
    super.init(coder: aDecoder)

    fatalError("init(coder:) has not been implemented")
} …