Travis: Run with Google Play Services for Voice Recognition

Getting the Voice recognition running is only possible, if at least one
handler handles the RecognitionService.SERVICE_INTERFACE intent. The
easiest way to achive this is to run the instrumented test on an emulator
which actually has the Google Play services installed.

This commit changes the travis-ci configuration so that the emulator
started has the Play services installed. It also adds some extras, which
are already pre-installed, but accoridng to the travis documentation[1]
should be explicitly mentioned to ensure build stability. However, for the
current build they don't change anything. The extras are namely:

extra-android-support
extra-google-google_play_services
extra-google-m2repository
extra-android-m2repository

For some reason, also the -no-audio switch does not work anymore, however,
currently there's no need to completely disable audio in our build and
test.

[1]
https://docs.travis-ci.com/user/languages/android/#Pre-installed-components

Signed-off-by: Florian <[email protected]>

.travis.yml

@@ -24,8 +24,17 @@ android:
   - platform-tools
   - tools
   - android-22
-  - sys-img-armeabi-v7a-android-22
-
+  - extra-google-google_play_services
+  - extra-google-m2repository
+  - extra-android-m2repository
+  - extra-android-support
+  - addon-google_apis-google-22 # Google play services
+  - sys-img-armeabi-v7a-google_apis-22
+
+licenses:
+  - android-sdk-license-.+
+  - google-gdk-license-.+
+
 install:
 - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout;1.0.2"
 - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout-solver;1.0.2"
@@ -35,11 +44,11 @@ install:
 # Emulator Management: Create, Start and Wait
 before_script:
 - android list device
-- echo no | android create avd --force -n test -t android-22 --abi armeabi-v7a -d "5.4in FWVGA"
-- emulator -avd test -no-audio -no-window &
+- android list target
+- echo no | android create avd --force -n test -t android-22 --abi armeabi-v7a --tag google_apis -d "5.4in FWVGA"
+- emulator -avd test -no-window &
 - android-wait-for-emulator
 - adb shell input keyevent 82 &
-- android list target
 
 script:
 - ./gradlew build connectedCheck test jacocoTestReport