How to upload 2 different flavor apps in 1 playstore project

Following is my app package name

com.test.myapp

and I have created 2 product flavors, 1 for development & 1 for production like following.

productFlavors {
    dev {
        applicationId = "com.test.myapp.dev"

    }

    production {
        applicationId = "com.test.myapp"
    }
}

It works fine, when i launch app from android studio, it also creates signed apk fine, but when i try to upload development apk on play store, it gives following error message.

Your APK or Android App Bundle needs to have the package name com.test.myapp.

Solution

Technically it is not possible, Google not allows this, you need to create 2 apps on Google play for this. But why you need flavor for development with different package name? does Google's Alpha testing not solve your problems?

Edit:

Based on comments the issue was how to load different strings.xml based on build config without creating new package name.

Solution:

flavorDimensions "dev"

productFlavors {
    dev {
        flavorDimensions "dev"
    }
    prod {
        flavorDimensions "dev"
    }
}

Create new strings.xml resource in dev source set

\src\dev\res\values\strings.xml

I have uploaded demo project:

https://github.com/pavelpoley/FlavorTest

More info you can find in docs:

https://developer.android.com/studio/build/build-variants#sourcesets