Swift 2 - 未調用協議委托

Question

我正在嘗試實現一個delegate ，以便在主 viewController 中調用事件。

當我嘗試在main view controller調用委托時，出現錯誤：

實例成員 'delegate' 不能用於類型 'CustomPickerViewController'

我在這里缺少什么？

在我的委托文件中，我有：

protocol CustomPickerViewControllerDelegate: class {
     func CustomPickerDidSelectRow(sender:CustomPickerViewController)
}

//MARK: The Main Class
public class CustomPickerViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {

// DELEGATE
    weak var delegate: CustomPickerViewControllerDelegate?

override public func viewDidLoad() {
        super.viewDidLoad()

        customPicker.delegate = self
        customPicker.dataSource = self

.....
    }

public func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

        if component == 0 {

        }else {

        customLabel.text = arrayCustom[row]
        self.delegate?.CustomPickerDidSelectRow(self)
        }
    }


}

主視圖控制器：

class ViewController: UIViewController, CustomPickerViewControllerDelegate {

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

       CustomPickerViewController.delegate = self // ERROR

    }

func CustomPickerDidSelectRow(sender: CustomPickerViewController) {
        print("ok")
    }

}

Answer 1

您可以像使用CustomPickerViewController一樣簡單地進行分配。 您需要為該視圖控制器創建新對象，然后分配委托，

例如：

let customPickerVC = CustomPickerViewController()
customPickerVC.delegate = self