一、引用在线的AAR包
先留再译，原文请见
https://developers.arcgis.com/android/latest/guide/develop-your-first-map-app.htm
二、引用本地的AAR包
原文
https://stackoverflow.com/questions/16682847/how-to-manually-include-external-aar-package-using-new-gradle-android-build-syst
