title: Auto sign in with Google, Facebook and Twitter in Android App
body: <p>Actually I have 2 questions. I added google, facebook and twitter sign in to my android app. I use firebase sign in for register and login. After that I will use my own python server. Now, I want to add auto sign in. Namely, after first login, it won't show login page again and it will open other pages automatically. I searched but i didn't find a sample for this structure. How can I do auto sign in with facebook, google, twitter in my android app. And how my server know this login is success and it will give user's data to clients in securely.</p>