ios - 图像选择器委托(delegate)错误 : cannot assign value of type

Question

我正在尝试从 Github 实现这个框架: https://github.com/hyperoslo/ImagePicker

然后我在我的 View Controller 中创建了一个 IBAction，如 Description 中所述:

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UINavigationBarDelegate {

@IBAction func addMemory(sender: UIBarButtonItem) {

    let imagePickerController = ImagePickerController()
    imagePickerController.delegate = self //Error here
    present(imagePickerController, animated: true, completion: nil)

    }
}

Error: Cannot assign value of type 'MemoriesTable' to type 'ImagePickerDelegate?'

Answer 1

您还应该实现 ImagePickerDelegate，因为委托(delegate)属于 ImagePickerDelegate 类型。更改如下

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UINavigationBarDelegate, ImagePickerDelegate {

确保实现协议(protocol)方法。

编辑 1

您需要实现ImagePickerDelegate的以下方法

public protocol ImagePickerDelegate: class {

   func wrapperDidPress(imagePicker: ImagePickerController, images: [UIImage])
   func doneButtonDidPress(imagePicker: ImagePickerController, images: [UIImage])
   func cancelButtonDidPress(imagePicker: ImagePickerController)
}