How to save data using Google sign-in

Question

I've just implemented Google sign-in into my app using the course on Udacity, the developer docs, and a sample on GitHub as resources.

The reason I chose to add sign-in into my app is so that the user could access their data on any devices where they are signed in to that account - i.e. the data would be saved on the cloud, so to speak.

However, I could not really find anything in the developer documentation, or on the Udacity course about how to save data to the cloud using the Google sign-in.

I've looked at the answer to a similar question on Stack Overflow which suggested using the Google Drive Android API to do this.

I've also had a look at databases in Firebase, which is completely new to me.

All of this leads me to believe that I need to use my own server to store the user's data (such as Firebase, I think, which is a paid service), or I should use the Google Drive API.

So, my question is, is there a particular API to save data to the cloud using the user's Google sign-in, or would I have to use my own server, or the Google Drive API?

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Edits:

To clarify some points made in the comments, I'm assuming Firebase is a paid service from it's pricings page if I want over 100 simultaneous database connections (which I don't need now, but soon I may have over 100 users saving data simultaneously).

I am aware Firebase has its own authentication system, but I hadn't considered using Firebase until I realised I need somewhere to save the data, which is why I didn't start using it from the beginning.

I know that Firebase isn't the same as Google Drive, but I was wondering which would be best for my purposes. My app currently reads/writes data to an SQLite database on the device. I want to save this data based on the user's Google account, so that they can sign-in on a different device and have the same data.

Answer 1

Don't know if it's too late...but

I had a similar thought few days back,came across this document about Google-Drive Api.

This can be used for storing your app's data, which will be retried using the same login.

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