How to return an image out of imagePickerController?-CodePudding

I'm new to programming and Swift and I can't find a solution to my problem :

I have 4 UIImageView with an UIButton on top of each image. When I tap a UIButton, I want to open an UIImagePickerController, select an image and place it in the UIImageView associated (here's a screen of my Interface Builder)

I've placed my UIImageView in an outlet collection

@IBOutlet var layout1Images: [UIImageView]!

Here's my IBAction linked to my 4 buttons :

@IBAction func openImagePicker(_ sender: UIButton) {
    for image in layout1Images {
        if sender.tag == image.tag {
            
            let picker = UIImagePickerController()
            picker.allowsEditing = true
            picker.delegate = self
            present(picker, animated: true)
            
        }
    }
}

And my imagePickerController :

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    guard let image = info[.editedImage] as? UIImage else { return }
    
    //How to return the image to the selected UIImageView ?
            
    dismiss(animated: true)
}

How can I return the image to the selected UIImageView ?

Thanks for your help

CodePudding user response：

add tag to 4 buttons as: 0, 1, 2, 3. create an array of images

var currentTag = 0
var images:[UIImage] = [UIImage(),UIImage(),UIImage(),UIImage()] {
      didSet {
        for (index,imageView) in layout1Images.enumerated() {
            imageView.image = images[index]
        }
     }
}


@IBAction func openImagePicker(_ sender: UIButton) {
            currentTag = sender.tag
            let picker = UIImagePickerController()
            picker.allowsEditing = true
            picker.delegate = self
            present(picker, animated: true)  
   }



func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    guard let image = info[.editedImage] as? UIImage else { return }
    images.remove(at: currentTag)
    images.insert(image, at: currentTag)
    //How to return the image to the selected UIImageView ?
            
    dismiss(animated: true)
}

CodePudding user response：

First of all store the tag you are getting from UIButton in a variable like

var selectedTag = 0

in openImagePicker() Action add the following line

selectedTag = sender.tag

now in func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any])

add this line

layoutImages[selectedTag].image = image