Any idea why I can’t return a String to my `upload...

# android

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Any idea why I can’t return a String to my uploadFileToFirebase function?
What am I doing wrong?
(part in red says):

return is not allowed here

[ribesg]

You’re trying to return synchronously in an asynchronous code.

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@ribesg
Can you please help? I am really short on time

I need to upload a file to Firebase (uses Firebase callbacks), get that file download URL(uses Firebase callbacks), and sent it to my backend (uses coroutines)

How can I combine the code above which uses Firebase callbacks with my backend coroutines call? (approximately, pseudocode is good too)

This is my method that sends the file download URL to my backend:

[ribesg]

Your function simply cannot return a String because it’s using callbacks, you could add a callback parameter of type (String) -> Unit to that function and call it instead of trying to return

[ribesg]

(I actually would use (Result<String>) -> Unit and call it in the failure listener too)

[ribesg]

You’re probably missing a failure listener on downloadUrl too

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image.png

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true, i have added a failure listener thanks