flutter / dart error: The argument type 'Future' can't be assigned to the parameter type 'File'

Question

I\'m trying to build my first mobile application with flutter and firebase. When I try to display and store a photo I have the following issue :

error: T

Answer 1

ref.put asks for a File as parameter. What you are passing is a Future.

You need to wait for the result of that future to make your call.

You can change your code to

final StorageUploadTask uploadTask = ref.put(await _imageFile);
final Uri downloadUrl = (await uploadTask.future).downloadUrl;

Or change _imageFile to File instead of Future