ios - 为 UIImagePicker 添加圆形裁剪组件？

Question

我有一个圆形框架 UIImageView，我需要在从照片库中选择图像后为 UIImagePickerController 添加一个圆形框架裁剪工具。与 Instagram 的 UIImagePicker 的 裁剪组件非常相似。如何添加此类组件？

更新

我发现这个 repo 有一个圆形裁剪工具 https://github.com/ruslanskorb/RSKImageCropper

但是有人可以指导我如何在用户从照片库中选择照片后使用 UIImagePickerController 实现这个裁剪工具吗？

更新

我在调试器中收到以下消息:

并且我的裁剪 View 中的按钮被禁用，这意味着我无法选择它们。调试器向我传递什么消息？

这是我的代码:

  @IBAction func chooseProfilePicture(sender: AnyObject) {

        var myPickerController = UIImagePickerController()
        myPickerController = UIImagePickerController()
        myPickerController.delegate = self;
        myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

        self.presentViewController(myPickerController, animated: true, completion: nil)
    }

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {

        var image : UIImage = (info[UIImagePickerControllerOriginalImage] as? UIImage)!

        editProfilePictureImageView.image = image

        self.dismissViewControllerAnimated(false, completion: { () -> Void in

            var imageCropVC : RSKImageCropViewController!

            imageCropVC = RSKImageCropViewController(image: image, cropMode: RSKImageCropMode.Circle)

            imageCropVC.delegate = self

            self.navigationController?.pushViewController(imageCropVC, animated: true)

        })

    }

Answer 1

Example Demo

是的，您可以在 UIImagePickerController 中添加 RSKImageCropper

定义imagePicker

var imagePicker : UIImagePickerController!

在 ViewDidLoad

    imagePicker = UIImagePickerController()
    imagePicker.delegate = self
    imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary;
    self.presentViewController(imagePicker, animated: true, completion: nil)

委托(delegate)方法:

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{

    var image : UIImage = (info[UIImagePickerControllerOriginalImage] as? UIImage)!

    picker.dismissViewControllerAnimated(false, completion: { () -> Void in

        var imageCropVC : RSKImageCropViewController!

        imageCropVC = RSKImageCropViewController(image: image, cropMode: RSKImageCropMode.Circle)

        imageCropVC.delegate =self

        self.navigationController?.pushViewController(imageCropVC, animated: true)

    })

}

见: