Unity- How to get the download URL once an image is uploaded to firebase storage?

Question

I'm using the basic unity firebase storage documentation provided by firebase.

after implementing the codes i get an error saying

'StorageMetadata.DownloadUrl' is obsolete: 'StorageMetadata.DownloadUrl is deprecated. Please use StorageReference.GetDownloadUrlAsync() instead' (CS0619) [Assembly-CSharp]

after that i have changed the code as

string download_url = storage_ref.Child("ss.jpg").GetDownloadUrlAsync().ToString();

in my code

images_ref.PutFileAsync(local_file).ContinueWith((Task<StorageMetadata> task) => { if(task.IsFaulted || task.IsCanceled) { Debug.Log(task.Exception.ToString()); status.text = "Uo-oh, an error occurred!"; } else { // Metadata contains file metadata such as size, content-type, and download URL. Firebase.Storage.StorageMetadata metadata = task.Result; Debug.Log("Finished uploading..."); //string download_url = metadata.DownloadUrl.ToString(); // This shows error //Changed as string download_url = storage_ref.Child("ss.jpg").GetDownloadUrlAsync().ToString(); Debug.Log("download url = " + download_url); } });

but when use this it does not returns a string of that URL

It returns :

download url = System.Threading.Tasks.Task`1[System.Uri]

I need to get the string value of downloadURL of the image once it is uploaded. Please help.

Thank you in advance.

Because async returns a task, you need the result of the task. — BugFinder
– BugFinder, Commented Jul 31, 2019 at 10:06
Possible duplicate of taskSnapshot.getDownloadUrl() is deprecated — BugFinder
– BugFinder, Commented Jul 31, 2019 at 10:21
The linked isnt necessarily firebased but its exactly the same problem and question — BugFinder
– BugFinder, Commented Jul 31, 2019 at 10:22
@BugFinder the question isn't primarily about DownloadUrl() but GetDownloadUrlAsync though — derHugo
– derHugo, Commented Jul 31, 2019 at 11:16

derHugo · Accepted Answer · 2019-07-31 12:24:58Z

Like most of the firebase methods GetDownloadUrlAsync() as the name already says is async and returns a Task<Uri>.

just as before you should use ContinueWith()

storage_ref.Child("ss.jpg").GetDownloadUrlAsync().ContinueWith((Task<Uri> uriTask) => { string download_url = uriTask.Result.ToString(); Debug.Log(download_url); });

where result will be of type Uri

I still get the same result as System.Threading.Tasks.Task`1[System.Uri] in the console. I need the string value of this result which is the URL to download the Img.
sorry you have to use the Result of the task .. renamed it to make it clearer

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