使用UIImagePickerController“使用未知类型创建图像格式是一个错误”

Question

While choosing an image from the image picker in iOS 10 Swift 3 I am getting an error - 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)
}

The image is not getting selected and updated. I need help or suggestion to know if the syntax or anything regarding this method has been changed in iOS10 or Swift 3 or is there any other way to do this.

Answer 1

Below mentioned code did solve the problem for me -

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

Remember to add delegate to self

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

Answer 3

Below code did solve the problem:

If user perform changes to selected image pull only that image otherwise pull original image source without any changes and finally dismiss image picker view controller.

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 4

If you allow editing of the picture imageController.allowsEditing = true then you will need to get the edited image first:

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 5

The accepted solution by Jeetendra Choudhary works.Although in Xcode 8 with Swift 3 , I noticed that it generates a warning : Instance method 'imagePickerController(_:didFinishPickingMediaWithInfo:)' nearly matches optional requirement 'imagePickerController(_:didFinishPickingMediaWithInfo:)' of protocol 'UIImagePickerControllerDelegate'

and suggests to add either @nonobjc or private keyword to silence the warning.If you silence the warning using these suggestions , the solution no longer works though.

Answer 6

I found the default images in the photo library could couse this problem. If you drag an image from your computor onto the simulator and choose it. this problem is solved

Answer 7

According Abdurohman's answer, i change my code and solve the problem,thanks.

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 8

将其添加到viewDidload（）

imagepicker.delegate = self

Answer 9

Add "_" in function parameters.

from

func imagePickerController(picker: UIImagePickerController ...

to

func imagePickerController(_ picker: UIImagePickerController ...

Answer 10

This worked for me:

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 11

If this helps anyone, I had this happen when I subclassed UIImageView to create a rounded view. It also happened when I added the below line in viewDidLoad()

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

I ended up adding the line in viewWillLayoutSubViews and it worked. See this for more details:

clipsToBounds causes UIImage to not display in iOS10 & XCode 8

Answer 12

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 13

更改didFinishPickingMediaWithInfo info: [String : AnyObject] ，到didFinishPickingMediaWithInfo info: [String : Any]

Answer 14

For Xcode 8.1 with swift 3, After changing the delegate method as below

change your

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

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

function to

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

    {


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

}

I forgot to add UINavigationControllerDelegate along with UIImagePickerControllerDelegate in

class ViewController:UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate

You would have added an variable at the beginning like

var imagePicker = UIImagePickerController()

and setting delegate and call a function in viewdidload() as

 imagePicker.delegate = self
 viwImagePick()

Then explain that function as

  //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)


        }
    }

Now the image is added to image view from the library

Answer 15

I think you are missing a connection between photoImageView and the image.

Take a look my screenshots below:

Answer 16

I think you are missing a connection between photoImageView and the image.

Take a look my screenshots below:

Good luck!

Answer 17

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 18

Be sure to also include the UINavigationControllerDelegate delegate. This solved the issue for me.

Answer 19

try below

    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 20

This worked for me. Just copy and paste it exactly.

    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 21

What I did was that once I got the image from didFinishPickingMediaWithInfo, I called:

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
}

to save it in NSData format.

The console still warned me on "[Generic] Creating an image format with an unknown type is an error" but at least my imageView gets updated to the selected image rather than showing the previous one from viewDidLoad.

Answer 22

// image picker with collection view 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 23

For me I was getting the error:

"fatal error: unexpectedly found nil..."

when you select imagein imagepicker.

To get around the problem, I created the outlet for the imageView again.