Question

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

然后我按照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) } }中所述在我的视图控制器中创建了@interface BaseViewController : UIViewController -(void) backPreviousScreen;：

#import "BaseViewController.h"
@interface LoginViewController : BaseViewController

错误：无法指定“MemoriesTable”类型的值进行输入 'ImagePickerDelegate？'

Answer 1

您也应该实现ImagePickerDelegate，因为委托的类型为ImagePickerDelegate。改变如下

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

确保实施协议方法。

编辑1

您需要实施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)
}

Answer 2

10个月后再次回顾我自己的问题。

只需更改此行：

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UINavigationBarDelegate

为：

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UINavigationBarDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate

将使其发挥作用。

Answer 3

如果你实现了ImagePickerController，那么你需要在你的类上添加以下代理 UINavigationControllerDelegate，UIImagePickerControllerDelegate

同时您还需要实现以下委托方法

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
    imageView.contentMode = .ScaleAspectFit
    imageView.image = pickedImage
}

dismissViewControllerAnimated(true, completion: nil)
} 




func imagePickerControllerDidCancel(picker: UIImagePickerController)    {
dismissViewControllerAnimated(true, completion: nil)
}

Answer 4

我有类似的问题。我意识到picker.delegate = self失踪了。添加它修复了问题

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

    var selectedImageFromPicker:UIImage?

    if let editedImage = info["UIImagePickerControllerOriginalImage"] as? UIImage{
        selectedImageFromPicker = editedImage
        print(editedImage.size)
    }



    else if let originalImage = info["UIImagePickerControllerOriginalImage"]  as? UIImage{
        selectedImageFromPicker = originalImage
        print(originalImage.size)

    }

    if let selectedImage = selectedImageFromPicker{
        Profileimg.image = selectedImage

    }
    dismiss(animated: true, completion: nil)

}

图像选择器委托错误：无法分配类型的值

4 个答案: