.travis.yml

language: android
sudo: required
jdk: oraclejdk8

before_cache:
 - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
 - rm -fr $HOME/.gradle/caches/*/plugin-resolution/

cache:
 directories:
 - $HOME/.gradle/caches/
 - $HOME/.gradle/wrapper/

env:
 global:
 - ANDROID_API=26
 - ANDROID_BUILD_TOOLS=27.0.1
 - ADB_INSTALL_TIMEOUT=5 # minutes

android:
 components:
 - tools
 - platform-tools
 - build-tools-$ANDROID_BUILD_TOOLS
 - android-$ANDROID_API
 - extra-google-m2repository
 - extra-android-m2repository # for design library
 - addon-google_apis-google-19 # google play services

licenses:
 - android-sdk-preview-license-.+
 - android-sdk-license-.+
 - google-gdk-license-.+

before_install:
 - mkdir "$ANDROID_HOME/licenses" || true
 - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
 - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"
 - chmod +x gradlew
 - ./gradlew dependencies || true # DON'T ADD unless you are getting "Install missing components using SDK manager"
#Source: https://medium.com/@oldergod/constraint-layout-and-circleci-travis-d50342696d2

script:
- "./gradlew clean build -PdisablePreDex --stacktrace"