Android Google Plus sign in issue. handleSignInResult returns False

Question

I\'ve been facing some issues while integrating Google+ Signin functionality. So far, i\'ve integrated all the necessary G+ Sign in API modules and codes which works good, g

Answer 1

As Sudhanshu Gaur pointed out in this post, try first generate a signed apk using the same key you used to create your json configuration file. Then install it on your device and see whether it works. The reason is Android Studio does not sign your apk when you click "run".
I was stuck on exactly the same problem and this fix worked fine for me.