Reddit – Dive into anything

Previously, this is our flow of using GoogleSignInClient to interact with Google Drive service.

    // GoogleSignInClient.silentSignIn() -> GoogleSignInAccount -> Drive object

    GoogleSignInClient googleSignInClient = buildGoogleSignInClient();

    Task<GoogleSignInAccount> task = googleSignInClient.silentSignIn();

    GoogleSignInAccount googleSignInAccount = task.getResult()

    Drive drive = getDriveService(googleSignInAccount)

    public static GoogleSignInClient buildGoogleSignInClient() {
        GoogleSignInOptions signInOptions =
            new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(GOOGLE_DRIVE_CLIENT_ID)
                .requestEmail()
                .requestScopes(new Scope(DriveScopes.DRIVE_APPDATA))
                .build();
        return GoogleSignIn.getClient(WeNoteApplication.instance(), signInOptions);
    }

    private static Drive getDriveService(GoogleSignInAccount googleSignInAccount) {
        GoogleAccountCredential credential =
            GoogleAccountCredential.usingOAuth2(
                MyApplication.instance(), Collections.singleton(DriveScopes.DRIVE_APPDATA)
            );

        credential.setSelectedAccount(googleSignInAccount.getAccount());
        Drive googleDriveService =
                new Drive.Builder(
                        AndroidHttp.newCompatibleTransport(),
                        new GsonFactory(),
                        credential
                )
                .setApplicationName(APPLICATION_NAME)
                .build();

        return googleDriveService;
    }

Now, we are trying to meet the deprecation deadline of GoogleSignInClient – https://android-developers.googleblog.com/2024/09/streamlining-android-authentication-credential-manager-replaces-legacy-apis.html

Based on https://stackoverflow.com/a/78605090/72437

It seems like I can skip using Credential Manager API (authentication), and jump directly into Authorization API (authorization)

https://developers.google.com/identity/authorization/android (authorization)

But, what is the replacement for the deprecated googleSignInClient.silentSignIn?

By having googleSignInClient.silentSignIn, it enables user to just sign in once, and can keep using Google Drive service without expiry for long period of time.

May I know, how can we achieve equivalent by using Authorization API?

Thanks.