ios - UIImagePickerController 编辑图像 - 在 Swift 2 中将 NSRect 转换为 CGRect

Question

我正在尝试裁剪已通过 UIImagePicker 选择和编辑的图像。由于某些原因，选择器不返回 UIImagePickerControllerEditedImage值(value)。所以我想做的是获取原始值并根据 UIImagePickerControllerCropRect 中的矩形裁剪它但那是 NSRect我需要将其转换为 CRRect裁剪它。这是我的图像选择器 Controller 功能:

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
        //Cut photo or show subview
        let chosenImage : UIImage
        print(editingInfo)
        if let possibleImage = editingInfo!["UIImagePickerControllerEditedImage"] as? UIImage {
            print("Edited image")
            chosenImage = possibleImage

        } else if let possibleImage = editingInfo!["UIImagePickerControllerOriginalImage"] as? UIImage {
            print("Non edited image")

            if let rectangle = editingInfo!["UIImagePickerControllerCropRect"] as? [[Int]] {

                print(rectangle[0])

            }

            let rect: CGRect = CGRectMake(0, 230, 750, 750)


            let imageRef: CGImageRef = CGImageCreateWithImageInRect(possibleImage.CGImage, rect)!

            let image: UIImage = UIImage(CGImage: imageRef, scale: image.scale, orientation: image.imageOrientation)
            chosenImage = image
        } else {
            return
        }


        self.profilePicture.image = chosenImage.rounded?.circle
        dismissViewControllerAnimated(true) { () -> Void in

        //update the server
        }
    }

除了根据 CGRectMake(0, 230, 750, 750) 中的矩形裁剪图像外，其他一切正常。我想用 UIImagePickerControllerCropRect 的值代替固定值.如果您对如何获得它有任何建议，请告诉我。

谢谢!

Answer 1

var rect: CGRect = CGRectMake(0, 230, 750, 750)
if let rectangle = editingInfo!["UIImagePickerControllerCropRect"] as? NSValue { 
  rect = rectangle.CGRectValue()
}

let imageRef: CGImageRef = CGImageCreateWithImageInRect(possibleImage.CGImage, rect)!

我想你使用了错误的变量