Android Artifacts Size Report is a Gradle plugin that enhances Build Scans by adding custom values to report the sizes of key artifacts in your Android project. The plugin supports the following artifact types:

• APK
• AAR
• AAB

plugins {
  id("io.github.cdsap.android-artifacts-size-report") version "0.1.1"
}

After the build is finished, the plugin will add custom values to the build scan with the size of the artifacts from the projects where the plugin is applied:

If the project where the plugin is applied contains an Android Application or Android Library it will automatically register a task for the current variants. This task will be executed once the final version of the artifact type has been produced using the Android Gradle Plugin Artifact API. For instance, for AARs:

val getAar = tasks.register<SizeFileTask>("sizeAar${variant.name}") {
...
}

variant.artifacts.use(getAar).wiredWith { it.input }.toListenTo(SingleArtifact.AAR)

Storing this information in the build scan allows you to create reports with the information of the size of the artifacts.

The Develocity API provides the model gradleAttributes containing the custom values added by the plugin. In this example, we are requesting the apk size of the last 100 builds:

curl --location -G 'https://$DV_URL/api/builds?models=gradle-attributes&reverse=true&maxBuilds=100' \
      --header "Authorization: Bearer $DV_TOKEN" | \
        jq -r '[.[] | .models.gradleAttributes.model.values[]
          | select(.name | test("\\.apk\\.size$"))
          | .value] | .[]'

Output:

7000096
7000096
7000096
7000096
7000096
7000096
6999796
6999796
6999796
6999796
6999796
6999796
6999796
6999796
5966391
5966391
5966391
4519041

If you have integrated Develocity Reporting Kit you can query the avaliable build models and create custom visualization components.

SELECT
    from_unixtime(gradleattributes.buildstarttime / 1000) AS time,
    CAST(app_debug_size.value AS DOUBLE) AS app_debug_apk_size
FROM build
CROSS JOIN UNNEST(gradleattributes."values") AS app_debug_size (name, value)
WHERE app_debug_size.name = 'app-debug.apk.size'

SELECT
    REGEXP_REPLACE(SUBSTR(app_debug_size.name, 1, POSITION('-release.aar.size' IN app_debug_size.name) - 1), '-prod$', '') AS module,
    CAST(app_debug_size.value AS DOUBLE) AS release_aar_size
FROM build
CROSS JOIN UNNEST(gradleattributes."values") AS app_debug_size (name, value)
WHERE app_debug_size.name LIKE '%-release.aar.size'
  AND app_debug_size.name LIKE '%-prod-release.aar.size'