CircleCI configuration file for Android Studio builds that works

config.yml

version: 2
jobs:
  build:
    working_directory: ~/code
    docker:
      - image: circleci/android:api-26
    environment:
      JVM_OPTS: -Xmx3200m
    steps:
      - checkout
      - restore_cache:
          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
      - run:
         name: Chmod permissions
         command: sudo chmod +x ./gradlew
      - run:
          name: Download Dependencies
          command: ./gradlew androidDependencies
      - run:
          name: Run Unit Tests
          command: ./gradlew test
#      - run:
#          name: Run Linters
#          command: ./gradlew check
      - run:
          name: Build
          command: ./gradlew assemble
      - store_artifacts:
          path: app/build/outputs/apk
          destination: artifact-files
      - store_test_results:
          path: app/build/test-results
          destination: artifact-test-results
      - save_cache:
          paths:
            - ~/.gradle
          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}