"Creating an image format with an unknown type is an error" 与 UIImagePickerController

Question

在 iOS 10 Swift 3 中从图像选择器中选择图像时出现错误 - Creating an image format with an unknown type is an error

 func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

    imagePost.image = image
    self.dismiss(animated: true, completion: nil)
}

图像未被选择和更新。我需要帮助或建议来了解 iOS10 或 Swift 3 中是否更改了语法或有关此方法的任何内容，或者是否有任何其他方法可以执行此操作。

Answer 1

下面提到的代码确实解决了我的问题 -

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imagePost.image = image
    } else{
        print("Something went wrong")
    }

    self.dismiss(animated: true, completion: nil)
}

Answer 2

在函数参数中添加“_”。

来自

func imagePickerController(picker: UIImagePickerController ...

至

func imagePickerController(_ picker: UIImagePickerController ...

Answer 3

如果您允许编辑图片 imageController.allowsEditing = true 那么您需要先获取编辑后的图片：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    picker.dismissViewControllerAnimated(true, completion: nil)

    if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
        imagePost.image = image
    } else if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imagePost.image = image
    } else {
        imagePost.image = nil
    }
}

Answer 4

记得给自己加delegate

let picker = UIImagePickerController()
picker.delegate = self // delegate added

Answer 5

根据Abdurohman的回答，我修改了代码解决了问题，谢谢

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage

    photoImageView.image = selectedImage

    // Dismiss the picker.
    dismiss(animated: true, completion: nil)
}

Answer 6

这对我有用：

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

Answer 7

如果这对任何人有帮助，我在子类化 UIImageView 以创建圆形视图时遇到过这种情况。当我在 viewDidLoad()

中添加以下行时也会发生这种情况

imageView.layer.cornerRadius = self.imageView.frame.size.width / 2

我最终在 viewWillLayoutSubViews 中添加了该行并且它起作用了。有关详细信息，请参阅此内容：

Answer 8

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

         let image = info[UIImagePickerControllerOriginalImage] as? UIImage
        self.dismiss(animated: true, completion: nil)
        self.imageTook.image = image
    }

Answer 9

by Jeetendra Choudhary works.Although in Xcode 8 和 Swift 3 ，我注意到它会生成警告： Instance method 'imagePickerController(_:didFinishPickingMediaWithInfo:)' nearly matches optional requirement 'imagePickerController(_:didFinishPickingMediaWithInfo:)' of protocol 'UIImagePickerControllerDelegate'

并建议添加 @nonobjc 或 private 关键字使 warning.If 静音您使用这些建议使警告静音，但该解决方案不再有效。

Answer 10

一定要包括UINavigationControllerDelegate代表。这为我解决了问题。

Answer 11

我发现照片库中的默认图片可能会导致此问题。如果您将图像从计算机拖到模拟器上并选择它。这个问题解决了

Answer 12

试试下面

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    print("image selected");
    let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImag
    self.dismiss(animated: true, completion: nil)
   UIImg.image = selectedImage
}

Answer 13

改变didFinishPickingMediaWithInfo info: [String : AnyObject], 至 didFinishPickingMediaWithInfo info: [String : Any]

Answer 14

这对我有用。只需准确复制并粘贴即可。

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    // The info dictionary contains multiple representations of the image, and this uses the original.
        let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage

    // Set photoImageView to display the selected image.
     photoImageView.image = selectedImage

    // Dismiss the picker.
    dismiss(animated: true, completion: nil)
}

Answer 15

我所做的是，一旦我从 didFinishPickingMediaWithInfo 获得图像，我就调用了：

func prepareImageForSaving(image:UIImage) {
    // create NSData from UIImage
    guard let imageData = UIImageJPEGRepresentation(image, 1) else {
        // handle failed conversion
        print("jpg error")
        return
    }

    self.saveImage(imageData: imageData as NSData)
}

func saveImage(imageData: NSData) {
    imageDatas = imageData
}

将其保存为 NSData 格式。

控制台仍然警告我“[通用] 创建类型未知的图像格式是错误的”，但至少我的 imageView 更新为所选图像，而不是显示来自 viewDidLoad 的前一个图像。

Answer 16

下面的代码确实解决了问题：

如果用户对所选图像进行更改，则仅拉取该图像，否则拉取原始图像源而不做任何更改，最后关闭图像选择器视图控制器。

public func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]){
    if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
        imageView.image = image
    }
    else if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.image = image
    } else{
        print("Something went wrong")
    }

    self.dismiss(animated: true, completion: nil)
}

Answer 17

对于 Xcode 8.1 和 swift 3，如下更改委托方法后

改变你的

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

    imagePost.image = image
    self.dismiss(animated: true, completion: nil)
}

作用于

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

    {


imagePost.image = info[UIImagePickerControllerOriginalImage] as? UIImage
 picker.dismiss(animated: true, completion: nil)

}

我忘记在

中添加 UINavigationControllerDelegate 和 UIImagePickerControllerDelegate

class ViewController:UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate

你会像

一样在开头添加一个变量

var imagePicker = UIImagePickerController()

并在 viewdidload() 中设置委托并调用函数

 imagePicker.delegate = self
 viwImagePick()

然后将该函数解释为

  //ImagePicker
    func viwImagePick(){


        let alert = UIAlertController(title: nil, message: "Choose your source", preferredStyle: UIAlertControllerStyle.alert)

        alert.addAction(UIAlertAction(title: "Camera", style: UIAlertActionStyle.default) { (result : UIAlertAction) -> Void in
            print("Camera selected")
            self.openCamera()

            //Code for Camera
            //cameraf
        })
        alert.addAction(UIAlertAction(title: "Photo library", style: UIAlertActionStyle.default) { (result : UIAlertAction) -> Void in
            print("Photo selected")
            self.openGallary()

            //Code for Photo library
            //photolibaryss
        })


        self.present(alert, animated: true, completion: nil)
           }



    func openCamera()
    {
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera
        if UIDevice.current.userInterfaceIdiom == .phone
        {
            self.present(imagePicker, animated: true, completion: nil)
        }
        else
        {
            let popover = UIPopoverController(contentViewController: imagePicker)

            popover.present(from: profileImgViw.frame, in: self.view, permittedArrowDirections: UIPopoverArrowDirection.any, animated: true)

        }
    }

    func openGallary()
    {
        imagePicker.sourceType = UIImagePickerControllerSourceType.savedPhotosAlbum
        if UIDevice.current.userInterfaceIdiom == .phone
        {
            self.present(imagePicker, animated: true, completion: nil)
        }
        else
        {
           let popover = UIPopoverController(contentViewController: imagePicker)

            popover.present(from: profileImgViw.frame, in: self.view, permittedArrowDirections: UIPopoverArrowDirection.any, animated: true)


        }
    }

现在图像已从库中添加到图像视图

Answer 18

将此添加到 viewDidload()

imagepicker.delegate = self

Answer 19

我认为您缺少 photoImageView 和图像之间的联系。

看看我下面的截图：

Answer 20

我认为您缺少 photoImageView 和图像之间的联系。

看看我下面的截图：

祝你好运！

Answer 21

// 带集合视图的图像选择器 class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UICollectionViewDataSource,UICollectionViewDelegate {

@IBOutlet var img: UIImageView!

@IBOutlet weak var collview: UICollectionView!

var image = NSMutableArray()


let imgpkr = UIImagePickerController()

override func viewDidLoad() {
    super.viewDidLoad()

    imgpkr.delegate = self
}




@IBAction func btnselect(_ sender: UIButton) {


    imgpkr.allowsEditing = true // false
    imgpkr.sourceType = .photoLibrary
    imgpkr.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
    present(imgpkr, animated: true, completion: nil)

}


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

    let choose = info[UIImagePickerControllerOriginalImage]as!UIImage
    let edit = info[UIImagePickerControllerEditedImage]as!UIImage

    img.contentMode = .scaleAspectFit
    img.image = edit

    //MARK:- Add image in collview

    image.add(edit)
    collview.reloadData()

    dismiss(animated: true, completion: nil)

}

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {

    dismiss(animated: true, completion: nil)
}

//MARK:- Collection View


func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

    return image.count

}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

    let cell = collview.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)as! CollectionViewCell1

    cell.img1.image = image.object(at: indexPath.item)as! UIImage

    return cell



}

Answer 22

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imgViewPhoto.image = image
    } else{
        print("Something went wrong")
    }

    picker.dismiss(animated: true, completion: nil)

}

Answer 23

对我来说，我得到了错误：

"fatal error: unexpectedly found nil..."

当您 select 在图像选择器中输入图像时。

为了解决这个问题，我再次为 imageView 创建了插座。

"Creating an image format with an unknown type is an error" 与 UIImagePickerController

"Creating an image format with an unknown type is an error" with UIImagePickerController

xcode

uiimageview

ios

swift

xcode8