Target a build variant

If you have different versions of your app based on different build variants, create custom keep rules for each variant. For example, if you have a free tier and a paid tier of your app with different features and dependencies, each tier should have its own keep rules.

Create keep rules

To create keep rules that are specific to a build variant, add the proguardFiles property in the corresponding flavor block under productFlavors. For example, the following build script adds the rules file flavor2‑rules.pro to the flavor2 product flavor:

Kotlin

android { ... buildTypes {  getByName("release") {  isMinifyEnabled = true  proguardFiles(  getDefaultProguardFile("proguard-android-optimize.txt"),  "proguard-rules.pro"  )  } } flavorDimensions.add("version")  productFlavors {  create("flavor1") {  ...  }  create("flavor2") {  proguardFile("flavor2-rules.pro")  }  } }

Groovy

android {  ...  buildTypes {  release {  minifyEnabled true  proguardFiles  getDefaultProguardFile('proguard-android-optimize.txt'),  'proguard-rules.pro'  }  }  flavorDimensions "version"  productFlavors {  flavor1 {  ...  }  flavor2 {  proguardFile 'flavor2-rules.pro'  }  } }

Additional resources