Ios Swift中的相机和图书馆行动

我对Swift编码非常陌生，我对相机和库的使用有问题。我有这部分代码：

    @IBAction func camera(_ sender: Any) {

    if !UIImagePickerController.isSourceTypeAvailable(.camera) {
        return
    }

    let cameraPicker = UIImagePickerController()
    cameraPicker.delegate = self
    cameraPicker.sourceType = .camera
    cameraPicker.allowsEditing = false

    present(cameraPicker, animated: true)
}

@IBAction func openLibrary(_ sender: Any) {
    let picker = UIImagePickerController()
    picker.allowsEditing = false
    picker.delegate = self
    picker.sourceType = .photoLibrary
    present(picker, animated: true)
}

}

在cameraPicker.delegate=self和picker.delegate=self中，会抛出如下错误：

无法将“ViewController”类型的值分配给类型“（UIImagePickerControllerDelegate&UINavigationControllerDelegate）？”

---

我真的不知道如何解决这个问题。如果有人能帮我做这件事，我将不胜感激，提前谢谢你

只需添加代理，如

class ViewConroller: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
   ...
}