Added Travis CI & Coveralls.

.travis.yml

@@ -0,0 +1,21 @@
+language: android
+
+android:
+  components:
+    - tools
+    - platform-tools
+    - build-tools-25.0.0
+    - android-25
+    - extra-android-m2repository
+
+jdk:
+  oraclejdk8
+
+before_script:
+  - echo no | android create avd --force -n test -t android-18 --abi armeabi-v7a
+  - emulator -avd test -no-audio -no-window &
+  - android-wait-for-emulator
+  - adb shell input keyevent 82 &
+
+script:
+   - ./gradlew createDebugCoverageReport coveralls

app/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'com.github.kt3k.coveralls'
 
 android {
     compileSdkVersion 25
@@ -41,3 +42,12 @@ dependencies {
     compile 'com.android.support:appcompat-v7:25.0.1'
     compile 'com.android.support:recyclerview-v7:25.0.1'
 }
+
+coveralls {
+    jacocoReportPath = "${buildDir}/reports/coverage/debug/report.xml"
+}
+
+tasks.coveralls {
+    dependsOn 'createDebugCoverageReport'
+    onlyIf { System.env.'CI' }
+}

build.gradle

@@ -6,6 +6,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.2.1'
+        classpath 'org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.4.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files