Fix CI Environment for Android

Author: jdnichollsc

.travis.yml

@@ -23,7 +23,7 @@ matrix:
       script: cd demo && npm run build.plugin && npm i && tns build android --bundle --env.uglify --env.snapshot
     - language: android
       env: 
-        - BuildAndroid="28"
+        - BuildAndroid="26"
       os: linux
       jdk: oraclejdk8
       before_install: nvm install stable
@@ -45,7 +45,7 @@ matrix:
       sudo: required
       jdk: oraclejdk8
       before_script:
-        - echo no | android create avd --force -n test -t android-21 -b armeabi-v7a
+        - echo no | android create avd --force -n test -t android-22 -b armeabi-v7a
         - emulator -avd test -no-audio -no-window &
         - android-wait-for-emulator
       before_install:
@@ -60,10 +60,20 @@ matrix:
 
 android:
   components:
-    - build-tools-28.0.3
-    - android-28
+    # Uncomment the lines below if you want to
+    # use the latest revision of Android SDK Tools
+    # - tools
+    # - platform-tools
+    # The BuildTools version used by your project
+    - build-tools-26.0.2
+    # The SDK version used to compile your project
+    - android-26
+    # Additional components
     - extra-android-m2repository
-    - sys-img-armeabi-v7a-android-21
+    # Specify at least one system image,
+    # if you need to run emulator(s) during your tests
+    # - sys-img-x86-android-26
+    - sys-img-armeabi-v7a-android-17
 
 before_install:
     - sudo pip install --upgrade pip