Modify .travis.yml

JessYanCoding · JessYanCoding · commit 7e70692c9076 · 2018-02-09T11:24:39.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,7 @@
 language: android
 jdk: oraclejdk8
+before_install:
+- yes | sdkmanager "platforms;android-27"
 
 env:
   global:
