Google Login Api on Mobile

I have been trying to the Google API on mobile and I have not found correct way ;

I can provide user login with google api on the web side and it works very well. But the “redirect” feature that I use in google login api works on the server side. For this reason, I cannot redirect in the mobile application after the user log in or when the error is returned.

So;

How can I redirect to the app when the user log in ?