Add CI for GitLab

.gitlab-ci.yml

@@ -0,0 +1,44 @@
+image: openjdk:8-jdk
+
+variables:
+  ANDROID_COMPILE_SDK: "28"
+  ANDROID_BUILD_TOOLS: "28.0.3"
+  ANDROID_SDK_TOOLS:   "5314842"
+
+before_script:
+  - apt-get --quiet update --yes
+  - apt-get --quiet install --yes wget tar unzip lib32stdc++6 lib32z1
+  - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/sdk-tools-linux-${ANDROID_SDK_TOOLS}.zip
+  - unzip -d android-sdk-linux android-sdk.zip
+  - echo y | android-sdk-linux/tools/bin/sdkmanager "platforms;android-${ANDROID_COMPILE_SDK}" >/dev/null
+  - echo y | android-sdk-linux/tools/bin/sdkmanager "platform-tools" >/dev/null
+  - echo y | android-sdk-linux/tools/bin/sdkmanager "build-tools;${ANDROID_BUILD_TOOLS}" >/dev/null
+  - export ANDROID_HOME=$PWD/android-sdk-linux
+  - export PATH=$PATH:$PWD/android-sdk-linux/platform-tools/
+  - chmod +x ./gradlew
+  # temporarily disable checking for EPIPE error and use yes to accept all licenses
+  - set +o pipefail
+  - yes | android-sdk-linux/tools/bin/sdkmanager --licenses
+  - set -o pipefail
+
+stages:
+  - build
+  - test
+
+lintDebug:
+  stage: build
+  script:
+    - ./gradlew -Pci --console=plain :app:lintDebug -PbuildDir=lint
+
+assembleDebug:
+  stage: build
+  script:
+    - ./gradlew assembleDebug
+  artifacts:
+    paths:
+    - app/build/outputs/
+
+debugTests:
+  stage: test
+  script:
+    - ./gradlew -Pci --console=plain :app:testDebug

app/build.gradle

@@ -12,6 +12,7 @@ repositories {
 android {
 
     compileSdkVersion 28
+    buildToolsVersion "28.0.3"
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8