How do I check if the user has a valid authorised token?

[ayaanpathan]

How do I check if the user has a valid authorised token?

[Lukiya]

After you call await onedrive.connect(); url_launcher will redirect your user to microsoft login page. if user login success, it will redirect user to the callback schema you specified, and if you register that callback schema right, your app will be open, and token will be saved automatically into secure storage.

[ayaanpathan]

That I understood and that's working fine as expected. I am asking how do I make sure that the token is valid without signing in again as I don't want the user to login each time before uploading a file.

[Lukiya]

As long as user doesn't revoke it and refresh token is not expired, it will refresh automatically after access token expired.

[ayaanpathan]

Yes, but is there any way to check that before calling onedrive.connect() ?

[Lukiya]

Yes, but is there any way to check that before calling onedrive.connect() ?

There is a method: onedrive.isConnected(), use this with FutureBuilder to check whether access token has been saved.