I'm writing an application that call google fit rest api from Flutter.
I need to sign with google using (https://pub.dev/packages/google_sign_in). I can obtain a token without problem (see Did anyone manage to get the id token from google sign in (Flutter)) but how to obtain a new token when it is expired?
I dont' want to ask to the user to login and obtain a new token every hour
You can do this in 2 ways.
You can use the API.
I don't know if this is standard but you can do a silent login every time the user opens the app, the silent log logs into the user account without user interaction and this way you have a new token. Like this:
Future<String> refreshToken() async {
print("Token Refresh");
final GoogleSignInAccount googleSignInAccount =
await googleSignIn.signInSilently();
final GoogleSignInAuthentication googleSignInAuthentication =
await googleSignInAccount.authentication;
final AuthCredential credential = GoogleAuthProvider.getCredential(
accessToken: googleSignInAuthentication.accessToken,
idToken: googleSignInAuthentication.idToken,
);
final AuthResult authResult = await auth.signInWithCredential(credential);
return googleSignInAuthentication.accessToken; // New refreshed token
}