In this project you can Get data from firebase and retrive from firebase .
Get a config file for your Android app
To download a config file for an Android app:
1.Sign in to Firebase and open your project.
2.Click the Settings icon and select Project settings.
3.In the Your apps card, select the package name of the app you need a config file for from the list.
4.Click google-services.json.
5.Put google-services.json in Project -> app folder.