ios – Swift：类的多重继承错误UIViewController和UIIMagePickerController

我手动添加了两个额外的控制器(UINavigationControllerDelegate& UI ImagePickerController)到UIViewController,并在添加UIImagePickerController后收到错误,

UIViewController和UIImagePickerController类的多重继承

我不确定如何解释和解决这个问题.

由于这个错误,当我使用image.delegate方法并将其设置为self时,我也会看到一个

类型ViewController不符合协议UIImagePickerControllerDelegate

码：

class ViewController: UIViewController,UINavigationControllerDelegate,UIImagePickerController {

    @IBACtion func pickImage(sender: UIButton) {

        var image = UIImagePickerController()
        image.delegate = self
        image.sourCEType = UIImagePickerControllersourceType.PhotoLibrary
        image.allowsEdiTing = false

        self.presentViewController(image,animated: true,completion: nil)


    }