Flutter returning a bool type from a Future Method

Question

This question is quite similar to this but the explanation didn\'t quite help for my use-case. I have a method of type Future that return a bool performing a query to cloud

Answer 1

The return type returned from doesNameAlreadyExist is Future<bool>, so the line doesNameAlreadyExist("userName", usernameController.value) == true, is actually Future<bool> == bool. You need to await, or then the result.

doesNameAlreadyExist("userName", usernameController.value).then(value => value == true)

or

(await doesNameAlreadyExist("userName", usernameController.value)) == true

Read more about async programming here: Dart Futures