Common Circle CI Config for Android Apps

config.yml

version: 2
jobs:
  build:
    resource_class: large
    branches:
      only:
        - master
    working_directory: ~/code
    docker:
      - image: circleci/android:api-28-alpha
    environment:
      JVM_OPTS: -Xmx4608m
      GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx4096m -XX:+HeapDumpOnOutOfMemoryError"'
    steps:
      - checkout
      - run:
          name: Set ANDROID_HOME
          command:  echo sdk.dir = $ANDROID_HOME > local.properties
      - run:
          name: Export Path
          command: export PATH=~/.local/bin:$PATH
      - run:
          name: Set minify system variable
          command: echo 'export MINIFY_ENABLED="true"' >> $BASH_ENV
      - restore_cache:
          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
      - run:
          name: Download Dependencies
          command: ./gradlew androidDependencies
      - save_cache:
          paths:
            - ~/.gradle
          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
      - run:
          name: Export Path
          command: export PATH=~/.local/bin:$PATH
      - run:
          name: Chmod permissions #if permission for Gradlew Dependencies fail, use this.
          command: sudo chmod +x ./gradlew
      - run:
          name: Build APKS
          command: ./gradlew
      - store_artifacts:
          path: app/build/outputs/apk
          destination: reports