.travis.yml

language: android

android:
        components:
                - tools
                - platform-tools
                - build-tools-28.0.3
                - android-28

script:
        - ./gradlew clean build

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"
        - echo yes | sdkmanager "build-tools;28.0.3"
        - echo yes | sdkmanager "platforms;android-28"