I have a simple swift App in which the user chooses an image from the Gallery, in addition to entering a few data. By clicking on Save the image chosen should be uploaded into Firestore Storage. I implemented the same logic described here https://firebase.google.com/docs/storage/ios/upload-files. When I call the ".putData(data, metadata: nil)" nothing happens and no error is given back. Here is the code snippet:
func uploadImage(imageView: UIImageView) -> String {
// Variable for my image url
var urlString: String
urlString = ""
storage = Storage.storage()
guard let image = imageView.image,
let imageData = image.jpegData(compressionQuality: 1.0) else {
print ("no image uploaded")
return ""
}
let imageName = String (Int64((NSDate().timeIntervalSince1970 * 1000.0).rounded())) + ".jpg"
let imageRef = storage.reference().child(Constants.IMAGES_PATH).child(imageName)
// QUOTE : THIS PART DOES NOT GIVE ANY FEEDBACK. NONE OF THE PRINTS INSIDE IT IS EXECUTED
let uploadTask = imageRef.putData(imageData, metadata: nil) { (metadata, error) in
if let error = error {
// Uh-oh, an error occurred!
print(error)
return
}
imageRef.downloadURL { (url, error) in
guard let downloadURL = url else {
print ("error")
return
}
urlString = downloadURL.absoluteString
print("Downloaded image URL ", urlString)
}
}
// UNQUOTE
print ("after uploadTask", imageRef.downloadURL) // THE URL IS ALWAYS EMPTY ""
return urlString
}
I set a debugger breakpoint, which shows that the code inside the uploadTask is not executed, just the uploadTask is executed and everything inside is skipped.
The uploadImage function is called after picking the Image like this:
var image = uploadImage(imageView: imageView)
The image is picked here (this works fine):
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
imageView.contentMode = .scaleAspectFit
imageView.image = pickedImage
print("image chosen")
}
dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
I initialised like this, which should be ok:
import UIKit
import os.log
import FirebaseFirestore
import Firebase
class DisplayMediumViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var storage: Storage!
override func viewDidLoad() {
super.viewDidLoad()
// Additional setup after loading the view.
imagePicker.delegate = self
// Create tap gesture recognizer
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(DisplayMediumViewController.imageTapped(gesture:)))
// Aadd it to the image view;
imageView.addGestureRecognizer(tapGesture)
// Make sure imageView can be interacted with by user
imageView.isUserInteractionEnabled = true
}
I searched a lot in the internet and tried different ways to implement it, none was successful. It would be great, if someone has a hint why the "uploadTask = imageRef.putData" does not upload the image nor return any downloadURL.
