CODEWITHSUNDEEP
iosswiftimageuiimagepickercontroller
MK iOS
MK iOS

Reputation: 178

'UIImage?' is not convertible to 'UIImage' issue in swift 4

I am trying to implement an image picker. In the delegate method I am getting the following error.

enter image description here

or

enter image description here

Here is the code, I wrote

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    var image = info[.editedImage] as? UIImage
    if image == nil {
        image = info[.originalImage] as? UIImage
    }

    simpleImagePicker!.dismiss(animated: true)
}

I tried this using Swift 5 and it is working without error. But the issue is with Swift 4.

How to resolve this? Is there any solution for it?

Upvotes: 3

Views: 1604

Answers (3)

Frank Eno
Frank Eno

Reputation: 2649

I tried this using Swift 5 and it is working without error. But the issue is with Swift 4.

First of all, if you're using Xcode 10.x I strongly suggest you to perform the Swift 5 update. Forget Swift 4 and stay updated.

Second, this is the right UIImagePickerControllerDelegate implementation on Swift 5:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
        // do stuff with your original image...

    } else if let image = info[UIImagePickerController.InfoKey.editedImage] as? UIImage {
        // do something with your edited image...
    }
    dismiss(animated: true, completion: nil)
}


Anyway, if you want to stick to Swift 4, this is the ImagePicker delegate function to use:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        if let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage {
            // do stuff with your image
        } else if let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage {
            // do stuff with your image
        }
        dismiss(animated:true, completion: nil)
}

Upvotes: 1

Tiran Ut
Tiran Ut

Reputation: 1056

The main problem is that there's no UIImagePickerController.InfoKey in Swift 4. The compiler could not define this type, which causes the error If you use correct signature for swift 4 with [String: Any] dictionary, the error will disappear

Upvotes: 0

Sohel L.
Sohel L.

Reputation: 9540

The UIImagePickerControllerDelegate signature is different for different Swift versions. You are using the method of Swift 4.2 and later which is far different from Swift 4.0.

Swift 4.0:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let editedImage = info[UIImagePickerControllerEditedImage] as? UIImage {

    } else if let originalimage = info[UIImagePickerControllerOriginalImage] as? UIImage {

    }
}

Swift 4.2 & Swift 5:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let image = info[UIImagePickerController.InfoKey.editedImage] as? UIImage {

    } else if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {

    } else {
        print("Something went wrong")
    }
}

So, check the proper swift version and follow the proper methods!

Upvotes: 3

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