iphone-sdk,在多个视图之间共享数据

class SharedDataModel {
    var data: String
    // 其他属性
    
    init(data: String) {
        self.data = data
    }
}

class SharedDataController {
    var sharedDataModel: SharedDataModel
    
    init(sharedDataModel: SharedDataModel) {
        self.sharedDataModel = sharedDataModel
    }
    
    func updateView(with data: String) {
        sharedDataModel.data = data
        // 更新视图
    }
}

class ViewController1: UIViewController {
    var sharedDataController: SharedDataController
    
    init(sharedDataController: SharedDataController) {
        self.sharedDataController = sharedDataController
        super.init(nibName: nil, bundle: nil)
    }
    
    func updateSharedData() {
        sharedDataController.updateView(with: "新数据")
    }
}

class ViewController2: UIViewController {
    var sharedDataController: SharedDataController
    
    init(sharedDataController: SharedDataController) {
        self.sharedDataController = sharedDataController
        super.init(nibName: nil, bundle: nil)
    }
    
    func showSharedData() {
        print(sharedDataController.sharedDataModel.data)
    }
}