迅速。传递UIImagePicker的委托作为参数

Question

ImagePicker类包含和UIImagePicker：

tx2

UICollectionView进入图像选择器：

if (!tx2.IsEnabled)
{
    tx2.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
};

因为上面提到的错误，这不起作用，但我该怎么做？

Answer 1

委托不能是AnyObject?类型。它必须是protocol<UIImagePickerControllerDelegate, UINavigationControllerDelegate>?类型：

class ImagePicker {
    let imagePicker = UIImagePickerController()
    weak var delegate: protocol<UIImagePickerControllerDelegate, UINavigationControllerDelegate>?

    init(delegate: protocol<UIImagePickerControllerDelegate, UINavigationControllerDelegate>?) {
        self.delegate = delegate
    }
    ....
}

您还应该将其设为weak属性以避免保留周期。