Question

我已经看过并阅读了documents of Apple，他们已经明确提到了关键UIImagePickerControllerEditedImage。但是当我运行下面的代码时，我没有在Dictionary中获得该键。这背后的原因是什么？

我的代码：

func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info:NSDictionary!)
    {
        println(info)

        //var tempImage:UIImage = info[UIImagePickerControllerOriginalImage] as UIImage
        var tempImage:UIImage? = info[UIImagePickerControllerEditedImage] as? UIImage

        profileButton.setImage(tempImage, forState: UIControlState(0))

        self.dismissViewControllerAnimated(true, completion:nil)

    }

println（info）print：

{
    UIImagePickerControllerMediaType = "public.image";
    UIImagePickerControllerOriginalImage = "<UIImage: 0x178295d60> size {960, 960} orientation 0 scale 1.000000";
    UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=2DDCE06B-6082-4167-A631-B3DF627055DF&ext=JPG";
}

仅供参考，我正在从图书馆挑选图像，我也尝试使用相机，但这个密钥仍未出现，但有关图像的其他数据即将到来。我正在使用iOS8.0构建SDK。

如果字典中没有这样的密钥，我该如何使用UIImagePickerControllerEditedImage。

Answer 1

你可以这样做。

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

    let image = info[UIImagePickerControllerEditedImage] as UIImage
}

Answer 2

SWIFT 3.0 ：

添加UINavigationControllerDelegate和UIImagePickerControllerDelegate

var imagePicker = UIImagePickerController()

@IBAction func btnSelectPhotoOnClick(_ sender: UIButton)
{
    let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
        self.openCamera()
    }))

    alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
        self.openGallary()
    }))

    alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))

    imagePicker.delegate = self
    self.present(alert, animated: true, completion: nil)
}
func openCamera()
{
    if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.camera))
    {
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}
func openGallary()
{
    imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
    imagePicker.allowsEditing = true
    self.present(imagePicker, animated: true, completion: nil)
}


func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    picker.dismiss(animated: true, completion: nil)
//You will get cropped image here..
    if let image = info[UIImagePickerControllerEditedImage] as? UIImage
    {
        self.imageView.image = image
    }   
}

Answer 3

我找到了问题的原因！因为属性“allowsEditing”被设置为 false ！我已将其更改为 true ，现在工作正常。

Answer 4

Swift 4.2

if let editedImage = info[UIImagePickerController.InfoKey.editedImage] as? UIImage {
        // Use editedImage Here
    }

Answer 5

确保您允许编辑UIImagePickerController中的图像。

您可以通过以下操作允许UIImagePickerController编辑UIImage

picker.allowsEditing = true

如何从Swift中的UIImagePickerController获取编辑过的图像？

5 个答案: