Android: Creating different environments

app build.gradle

flavorDimensions "pack"

productFlavors {
    qa {
        applicationId "com.pridelandTechnologiesLLC.kayuQA"        

        resValue "string", "app_name", "Kayu QA"

        dimension "pack"

    }
    prod {
        applicationId "com.pridelandTechnologiesLLC.kayu"

        resValue "string", "app_name", "Kayu"

        dimension "pack"

    }
}

You can add many other attributes in the same fashion.

If you want to have an app for qa in firebase and one in prod create a folder qa

 and another folder prod in the same level as main. I.E.:

<your_app>

   app

      src
         main
         qa
            google-services.json // The one related to qa
         prod
            google-services.json // The one related to prod

To run the different environments you need to select them on the Build Variants.

 Located at the bottom left of the menu (above Favorites).