How to assign different versionCode for multiple architecture apks built with flutter

Question

My pubspec.yaml has version code 11.

Building a fat apk with flutter build apk gives an apk with versionCode 11 as expected. But building an armeabi-v7a-release apk gives an apk with versionCode 1011 instead of 11.

I would like to change the behaviour of incrementing 1000 to the versionCode of armeabi-v7a as mentioned in android's documentation (Thanks to @Varun Kumar for pointing it). I want the armeabi-v7a apk to have the versionCode corresponding to that mentioned in pubspec.yaml. How do I edit this build.gradle to achieve the same?

Answer 1

Figured that it's possible to override the output .apk file's versionCode by adding code to the build.gradle(:app) as mentioned in android's documentation that allows us to explicitly modify the logic followed to assign versionCode for each abi.

For avoiding the 1000 increment made to armeabi-v7a alone, I modified the logic of the inner if block to the following:

        if (baseAbiVersionCode != null ) {
            output.versionCodeOverride =
                    baseAbiVersionCode * 1000 + variant.versionCode

            if (baseAbiVersionCode == 1) { // Matches armeabi-v7a in ext.abiCodes
                // Uses the default versionCode for armeabi-v7a APKs.
                output.versionCodeOverride = variant.versionCode
            }
        }

NOTE: This part is a little hacky as you might end up having the same versionCode for both the fat apk and the armeabi-v7a ABIs. I would recommend using this only if you want to target one ABI exclusively.