Issue with saving image in gallery and displaying - ios

Question

Do consider this as a question from someone who is not so good at swift..:).I have a button on the click of which the imagepicker is opened and I am able to select the images. In the didFinishPickingMediaWithInfo I'm adding the image to array like so...
var imageArray = [UIImage]()
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
UIImageWriteToSavedPhotosAlbum(image, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
imageArray.append(image)
for i in 0..<imageArray.count {
imageView.image = imageArray[i]
imageView.contentMode = .scaleAspectFit
let xPosition = self.view.frame.width * CGFloat(i)
imageView.frame = CGRect(x: xPosition, y: 0, width: self.imageScrollView.frame.width, height: self.imageScrollView.frame.height)
imageScrollView.contentSize.width = imageScrollView.frame.width * (CGFloat(i + 1))
imageScrollView.addSubview(imageView)
}
}
self.dismiss(animated: true, completion: nil)
}
I'm also having these functions:
func saveImage(image: UIImage, path: String) -> Bool {
let jpgImageData = UIImageJPEGRepresentation(image, 1.0)
do {
try jpgImageData?.write(to: URL(fileURLWithPath: path), options: .atomic)
} catch {
print(error)
}
return (jpgImageData != nil)
}
func getDocumentsURL() -> NSURL {
let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
return documentsURL as NSURL
}
func fileInDocumentsDirectory(filename: String) -> String {
let fileURL = getDocumentsURL().appendingPathComponent(filename)
return fileURL!.path
}
But my issue is this..I just don't want to show just one image that is picked from the gallery. I want to pick multiple images from the gallery(one at a time), store them in an array and then display them all in a horizontal scrolling format. For this purpose, I'm setting a scrollview to take the images(as given in didFinishPickingMediaWithInfo)
Maybe I have to read the image also. But how that can be done I'm not able to figure out...Please help!

Answer 1

Please see this loop which i have corrected
You are only creating one UIImageView and adding to the scrollview.
Please initialize the UIImageView every time
for i in 0..<imageArray.count {
var imageView = UIImageView() //*** Add this line to your code
imageView.image = imageArray[i]
imageView.contentMode = .scaleAspectFit
let xPosition = self.view.frame.width * CGFloat(i)
imageView.frame = CGRect(x: xPosition, y: 0, width: self.imageScrollView.frame.width, height: self.imageScrollView.frame.height)
imageScrollView.contentSize.width = imageScrollView.frame.width * (CGFloat(i + 1))
imageScrollView.addSubview(imageView)
}
When ever you update your scrollview with newImages dont forget to remove the old ones.

Answer 2

Use this to save image
var imageArr:[UIImage] = []
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
UIImageWriteToSavedPhotosAlbum(chosenImage, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
imageArr.append(chosenImage)
for i in 0..<imageArray.count
{
imageView.image = imageArray[i]
imageView.contentMode = .scaleAspectFit
let xPosition = self.view.frame.width * CGFloat(i)
imageView.frame = CGRect(x: xPosition, y: 0, width: self.imageScrollView.frame.width, height: self.imageScrollView.frame.height)
imageScrollView.contentSize.width = imageScrollView.frame.width * (CGFloat(i + 1))
imageScrollView.addSubview(imageView)
}
}