Update Gradle for standalone build, add CI pipeline

.gitlab-ci.yml

@@ -0,0 +1,52 @@
+# This file is a template, and might need editing before it works on your project.
+# Read more about this script on this blog post https://about.gitlab.com/2018/10/24/setting-up-gitlab-ci-for-android-projects/, by Jason Lenny
+image: openjdk:8-jdk
+
+variables:
+  ANDROID_COMPILE_SDK: "28"
+  ANDROID_BUILD_TOOLS: "28.0.2"
+  ANDROID_SDK_TOOLS:   "4333796"
+
+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 lintDebug -PbuildDir=lint
+  tags:
+    - labs
+
+assembleDebug:
+  stage: build
+  script:
+    - ./gradlew assembleDebug
+  artifacts:
+    paths:
+    - build/outputs/
+  tags:
+    - labs
+
+debugTests:
+  stage: test
+  script:
+    - ./gradlew -Pci --console=plain testDebug
+  tags:
+    - labs

build.gradle

@@ -1,3 +1,14 @@
+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.3.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
+    }
+}
+
 apply plugin: 'com.android.library'
 apply plugin: 'com.github.dcendents.android-maven'
 
@@ -30,7 +41,7 @@ android {
 }
 
 dependencies {
-    implementation fileTree(include: ['*.jar'], dir: 'libs')
+    //implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:28.0.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
@@ -55,3 +66,10 @@ dependencies {
     // precis for unicode name validation
     implementation 'rocks.xmpp:precis:1.0.0'
 }
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
+    }
+}