This is a simple real time one-to-one chat app for android using firebase database. Users can login using their google accounts and have conversations with other registered members.
Before you use:
Windows: keytool -list -v -keystore "%USERPROFILE%.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android (From Java->jdk-bin)
Mac/Linux: keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
(For production, the json file is to be created from play store console)
For reference, see https://codelabs.developers.google.com/codelabs/firebase-android/#0
I have provided my google-services.json as a sample (DO NOT USE IT IN YOUR OWN PROJECT, IT WILL NOT WORK)