Example .travis.yml file for Android

.travis.yml

# Tutorial here: https://medium.com/@harmittaa/travis-ci-android-example-357f6e632fc4

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=24
 - EMULATOR_API=21
 - ANDROID_BUILD_TOOLS=24.0.2
 - ADB_INSTALL_TIMEOUT=5 # minutes
 - secure: "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"
 - secure: "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"

android:
 components:
 - tools
 - platform-tools
 - build-tools-$ANDROID_BUILD_TOOLS
 - android-$ANDROID_API
 - android-$EMULATOR_API_LEVEL
 - extra-google-m2repository
 - extra-android-m2repository # for design library
 - addon-google_apis-google-19 # google play services
 - sys-img-armeabi-v7a-addon-google_apis-google-$ANDROID_API_LEVEL
 - sys-img-armeabi-v7a-addon-google_apis-google-$EMULATOR_API_LEVEL

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

before_install:
- openssl aes-256-cbc -K $encrypted_c0801aa05af4_key -iv $encrypted_c0801aa05af4_iv -in example_keystore.jks.enc -out example_keystore.jks -d
- mkdir "$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

before_script:
- echo no | android create avd --force -n test -t android-21 --abi armeabi-v7a
- emulator -avd test -no-skin -no-audio -no-window &
- android-wait-for-emulator
- adb shell input keyevent 82 &

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

before_deploy:
- cp $TRAVIS_BUILD_DIR/example_keystore.jks $HOME
- cd app/build/outputs/apk/
- jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore $HOME/example_keystore.jks -storepass $storepass -keypass $keypass app-release-unsigned.apk ExampleKeystoreAlias

# Verification
- jarsigner -verify app-release-unsigned.apk
- "${ANDROID_HOME}/build-tools/24.0.2/zipalign -v 4 app-release-unsigned.apk TravisExample.apk"

deploy:
  provider: releases
  file: TravisExample.apk
  skip_cleanup: true

  on:
    repo: harmittaa/travis-example-android
    tags: true
    jdk: oraclejdk8
  api_key:
    secure: "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"

Shouldn't $EMULATOR_API_LEVEL be $EMULATOR_API?

I guess this part

 global:
 - ANDROID_API=24
 - EMULATOR_API=21

Does not match with the futher part:

...
 - android-$EMULATOR_API_LEVEL
...
 - sys-img-armeabi-v7a-addon-google_apis-google-$ANDROID_API_LEVEL
 - sys-img-armeabi-v7a-addon-google_apis-google-$EMULATOR_API_LEVEL
....