This Docker image contains the Android SDK and most common packages necessary for building Android apps in a CI tool like GitLab CI. Make sure your CI environment's caching works as expected, this greatly improves the build time, especially if you use multiple build jobs.
A .gitlab-ci.yml with caching of your project's dependencies would look like this:
image: jangrewe/gitlab-ci-android
variables:
ANDROID_COMPILE_SDK: "27"
stages:
- test
- build
before_script:
- export GRADLE_USER_HOME=$(pwd)/.gradle
- chmod +x ./gradlew
- apt-get update -y && apt-get install wget -y
cache:
key: ${CI_PROJECT_ID}
paths:
- .gradle/
build:
stage: build
script:
- ./gradlew assemble
artifacts:
paths:
- app/build/outputs/apk/release/app-release-unsigned.apk
- app/build/outputs/apk/debug/app-debug.apk
unitTests:
stage: test
script:
- ./gradlew test
functionalTests:
stage: test
script:
- wget --quiet --output-document=android-wait-for-emulator https://raw.githubusercontent.com/travis-ci/travis-cookbooks/0f497eb71291b52a703143c5cd63a217c8766dc9/community-cookbooks/android-sdk/files/default/android-wait-for-emulator
- chmod +x android-wait-for-emulator
- echo y | ${ANDROID_HOME}/tools/bin/sdkmanager "system-images;android-${ANDROID_COMPILE_SDK};google_apis_playstore;x86"
- echo y | ${ANDROID_HOME}/tools/bin/sdkmanager --update
- echo no | ${ANDROID_HOME}/tools/bin/avdmanager create avd -k "system-images;android-${ANDROID_COMPILE_SDK};google_apis_playstore;x86" -n test
- ${ANDROID_HOME}/tools/emulator -avd test -no-window -no-audio &
- ./android-wait-for-emulator
- adb shell input keyevent 82
- ./gradlew cAT