Not receiving Google OAuth refresh token

Question

I want to get the access token from Google. The Google API says that to get the access token, send the code and other parameters to token generating page, and the response

Answer 1

In order to get the refresh token you have to add both approval_prompt=force and access_type="offline" If you are using the java client provided by Google it will look like this:

GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
            HTTP_TRANSPORT, JSON_FACTORY, getClientSecrets(), scopes)
            .build();

AuthorizationCodeRequestUrl authorizationUrl =
            flow.newAuthorizationUrl().setRedirectUri(callBackUrl)
                    .setApprovalPrompt("force")
                    .setAccessType("offline");