Move emulator script to travis

.travis.yml

@@ -4,13 +4,25 @@ android:
   components:
     - tools
     - platform-tools
-    - build-tools-27.0.3
     - android-27
-    - extra-android-m2repository
-    - sys-img-armeabi-v7a-android-19
+
 jdk:
   - oraclejdk8
 
+before_script:
+  # Install SDK license so Android Gradle plugin can install deps.
+  - mkdir "$ANDROID_HOME/licenses" || true
+  - echo "d56f5187479451eabf01fb78af6dfcb131a6481e" > "$ANDROID_HOME/licenses/android-sdk-license"
+  # Install the rest of tools (e.g., avdmanager)
+  - sdkmanager tools
+  # Install emulator system image
+  - sdkmanager "system-images;android-19;default;armeabi-v7a"
+  # Start Emulator
+  - echo no | $ANDROID_HOME/tools/bin/avdmanager create avd --force -n test -k "system-images;android-19;default;armeabi-v7a"
+  - emulator -avd test -no-audio -no-window &
+  - android-wait-for-emulator
+  - adb shell input keyevent 82 &
+
 script:
   ./gradlew build test connectedCheck
 

build.gradle

@@ -26,28 +26,4 @@ task clean(type: Delete) {
     delete rootProject.buildDir
 }
 
-ext.isCi = "true" == System.getenv("CI")
-
-if (isCi) {
-    println 'Running on CI. Adding task to start emulator.'
-
-    task startEmulator {
-        doLast {
-            "$rootDir/gradle/start-emulator.sh".execute().waitFor()
-        }
-    }
-
-    subprojects {
-        afterEvaluate { Project project ->
-            project.android.testVariants.all { variant ->
-                variant.connectedInstrumentTest.dependsOn startEmulator
-            }
-
-            project.android.dexOptions {
-                preDexLibraries = false
-            }
-        }
-    }
-}
-
 apply from: file("gradle/bintray-properties.gradle")