Basic .travis.yml Android config

.travis.yml

language: android
jdk: oraclejdk8
sudo: false


env:
  global:
    - MAJOR_MINOR=0.1
    - RELEASE_PKG_FOLDER_PATH=app/build/outputs/apk/
    - RELEASE_PKG_FILE=YourAppName-${TRAVIS_BRANCH}-${MAJOR_MINOR}.${TRAVIS_BUILD_NUMBER}.apk
    - APK_MD5_FILE=md5sum.txt
    - APK_SHA1SUM_FILE=sha1sum.txt
    - CHANGELOG_FILE=YourAppName-${TRAVIS_BRANCH}-${MAJOR_MINOR}.${TRAVIS_BUILD_NUMBER}-changelog.txt
#    - ANDROID_EMULATOR_API_LEVEL=19


# safelist
branches:
  only:
  - master
  - develop


android:
  components:
    - tools # to get the new `repository-11.xml`
    - tools # see https://github.com/travis-ci/travis-ci/issues/6040#issuecomment-219367943)
    - platform-tools #latest
    - build-tools-26.0.2
    - android-26
    - extra-android-m2repository
#    - extra-android-support
#    - sys-img-armeabi-v7a-android-19


before_install:
    - chmod +x gradlew
    - chmod a+x ./scripts/changelog.sh

#install: ./gradlew clean

script:
   - bash ./gradlew assembleDebug check;
#   - bash ./gradlew app:assembleRelease check;

cache:
   directories:
       - "$HOME/.gradle/caches/"
       - "$HOME/.gradle/wrapper/"
       - "$HOME/.android/build-cache"


after_success:
    #needed to push the apk to Github releases
    - sh scripts/set_tags.sh


before_deploy:
    #keeping the builds in one place
    - mv app/build/outputs/apk/debug/app-debug.apk $RELEASE_PKG_FOLDER_PATH$RELEASE_PKG_FILE
    #calculating and storing the md5sum and sha1sum along with the build
    - cd $RELEASE_PKG_FOLDER_PATH; ls -la; md5sum $RELEASE_PKG_FILE > $APK_MD5_FILE; sha1sum $RELEASE_PKG_FILE > $APK_SHA1SUM_FILE; ls -la; cd -

    #getting and storing the changelog for the current build
    - sh scripts/changelog.sh
    - sh scripts/changelog.sh > $RELEASE_PKG_FOLDER_PATH$CHANGELOG_FILE

    - echo "Deploying apk file $RELEASE_PKG_FILE from $RELEASE_PKG_FOLDER_PATH$RELEASE_PKG_FILE to GitHub releases"

    #update the tags in project
    - git fetch --tags


deploy:
  - provider: releases
    skip_cleanup: true
    api_key: $GITHUB_TOKEN
    file_glob: true
    file:
        - $RELEASE_PKG_FOLDER_PATH$RELEASE_PKG_FILE
        - $RELEASE_PKG_FOLDER_PATH$APK_MD5_FILE
        - $RELEASE_PKG_FOLDER_PATH$APK_SHA1SUM_FILE
        - $RELEASE_PKG_FOLDER_PATH$CHANGELOG_FILE
    on:
      all_branches: true

changelog.sh

#!/usr/bin/env sh
CURRENTDATE=`date +"%d-%m-%Y %T"`
GIT_COMMIT_LOG="$(git log --format='%s (by %cn)' $TRAVIS_COMMIT_RANGE)"

echo "<b>Build ${MAJOR_MINOR}.${TRAVIS_BUILD_NUMBER}</b>${NEWLINE}"
echo "\tbuilt on <i>$TRAVIS_BRANCH</i> branch${NEWLINE}"
echo "\ton $CURRENTDATE${NEWLINE}${NEWLINE}"
echo "Contains the followning changes:${NEWLINE}"

printf '%s\n' "$GIT_COMMIT_LOG" | while IFS= read -r line
do
  echo "- ${line}"
done

set_tags.sh

# Is this not a Pull Request?
if [ "$TRAVIS_PULL_REQUEST" = false ]; then

  # Is this not a build which was triggered by setting a new tag?
  if [ -z "$TRAVIS_TAG" ]; then
    echo -e "Starting to tag commit.\n"

    git config --global user.email "travis@travis-ci.com"
    git config --global user.name "Travis"

    # Add tag and push to master.
    git tag -a ${TRAVIS_BRANCH}-build${TRAVIS_BUILD_NUMBER} -m "Travis pushed tag for build $TRAVIS_BUILD_NUMBER."
    git push origin --tags
    git fetch origin

    echo -e "Done magic with tags.\n"
  fi
fi