Display Image downloaded from downloadURL generated by Firebase - ios

Question

I need to display the images that have been stored on the storage on Firebase. Right now, I only tracked the images using the link generated by function downloadURL:
func UploadImage(imageData: Data, path: String, completion: #escaping (String) -> ()){
let storage = Storage.storage().reference()
let uid = Auth.auth().currentUser?.uid
storage.child(path).child(uid ?? "").putData(imageData, metadata: nil) { (_, err) in
if err != nil{
completion("")
return
}
// Downloading Url And Sending Back...
storage.child(path).child(uid ?? "").downloadURL { (url, err) in
if err != nil{
completion("")
return
}
completion("\(url!)")
}
}
}
So all I can get is a hyperlink that is like: https://firebasestorage.googleapis.com/v0/b/getting-started-20f2f.appspot.com/o/profile_Photos%2FGQ1KR9H1mLZl2NAw9KQcRe7d72N2?alt=media&token=473ce86c-52ba-42ec-be71-32cc7dc895d7.
I refer to the official documentation, it seems that only when I have the name of the image file can I download it to an ImageView or UIImageView object. However, the link does not make any sense to me, so what can I do?
EDIT
I actually tried a solution provided by the official documentation:
func imageDownloader(_ imageURL: String) {
let store = Database.database().reference()
let uid = Auth.auth().currentUser?.uid
let imageRef = store.child(imageURL)
var myImageView = UIImageView()
imageRef.getData(completion: { (error, data) in
if let error = error {
// Uh-oh, an error occurred!
} else {
// Data for "images/island.jpg" is returned
let image = UIImage(data: data!)
}
})
}
But it suggests that I need to change something because Cannot convert value of type 'DataSnapshot' to expected argument type 'Data'.

Answer 1

If you're storing the image paths in Firestore, actually the exact file name does not matter if there is only one file available under the fork. So you just need to specify the path.
To then download the image from Storage, construct the path and download:
let uid = Auth.auth().currentUser?.uid
Storage.storage().reference().child("the\path\to\your\uid\collection").child(uid).getData(maxSize: 1048576, completion: { (data, error) in
if let data = data,
let img = UIImage(data: data) {
// do something with your image
} else {
if let error = error {
print(error)
}
// handle errors
}
})

Answer 2

You are uploading to Storage.storage(), but then in your imageDownloader, you're attempting to use Database.database(), which has a similar-looking API, but is, in fact, different.
Make sure to use Storage.storage() and that the closure parameters are in the order data, error in.
Finally, right now in your imageDownloader, it doesn't look like you're doing anything yet with var myImageView = UIImageView(), but keep in mind that you won't have access to the UIImage until the async getData completes.

Answer 3

Store your images at Firebase Storage & then retrieve using this code.
Storage.storage().reference.child("ProfilePhotos").child("ImageName").downloadURL {(url, _) in
DispatchQueue.main.async {
guard let url = url else { return }
imageView.setImage(with: url, placeholder: UIImage(named: "dummyImage"))
}
}