Firebase image in storage gets rewritten and only last two are kept - swift

Question

In my Firebase project, the user has the ability to upload an image and it is stored in a folder called images on Firebase Storage.
However, whenever I am testing it out by uploading an image, the folder only shows the 2 most recent images I have uploaded. I would like it to keep all uploaded images.
Has anyone else run into a similar problem? I don't know if the problem lies within my code or in Firebase but here is my code:
import UIKit
import FirebaseStorage
class PostViewController: UIViewController,UINavigationControllerDelegate, UIImagePickerControllerDelegate {
#IBOutlet weak var imageView: UIImageView!
#IBOutlet weak var noteTextField: UITextField!
var imagePicker = UIImagePickerController()
var imageName = "\(NSUUID().uuidString).jpeg"
var imageURL = ""
override func viewDidLoad() {
super.viewDidLoad()
let tapGesture = UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing))
view.addGestureRecognizer(tapGesture)
imagePicker.delegate = self
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let selectedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
imageView.image = selectedImage
}
dismiss(animated:true, completion: nil)
}
#IBAction func cameraTapped(_ sender: Any) {
imagePicker.sourceType = .camera
present(imagePicker,animated: true, completion: nil)
}
#IBAction func choosePhotoTapped(_ sender: Any) {
imagePicker.sourceType = .photoLibrary
present(imagePicker,animated: true, completion: nil)
}
#IBAction func postTapped(_ sender: Any) {
let imagesFolder = Storage.storage().reference().child("images")
if let image = imageView.image{
if let imageData : Data = image.jpegData(compressionQuality: 1){
imagesFolder.child(imageName).putData(imageData, metadata: nil) { (metaData, error) in
if let error = error{
print(error)
}else{
imagesFolder.child(self.imageName).downloadURL { (url, error) in
if let imageURL = url?.absoluteString{
self.imageURL = imageURL
self.performSegue(withIdentifier: "successSegue", sender: nil)
}
}
}
}
}
}
}
}
Does the problem possibly exist in Firebase's settings?

Answer 1

One issue is that when the PostViewController is instantiated, the imageName var is populated and every time an image is tapped to be saved, it will save with the same name. The name would change if, for example, the app was restarted as a new PostViewController would be instantiated which would create a new imageName property
The fix is to move the imageName property so it's created each time a user taps
class PostViewController: UIViewController,UINavigationControllerDelegate, UIImagePickerControllerDelegate {
#IBOutlet weak var imageView: UIImageView!
#IBOutlet weak var noteTextField: UITextField!
var imagePicker = UIImagePickerController()
|--- //var imageName = "\(NSUUID().uuidString).jpeg" //move this
| var imageURL = ""
| .
| .
| #IBAction func postTapped(_ sender: Any) {
|
| let imagesFolder = Storage.storage().reference().child("images")
| if let image = imageView.image {
| if let imageData : Data = image.jpegData(compressionQuality: 1) {
|----> let imageName = "\(NSUUID().uuidString).jpeg" //to here
imagesFolder.child(imageName).putData(imageData, metadata: nil) { (metaData, error) in
if let error = error{