These libraries (mostly from google-api-java-client) must be in 'libs': commons-codec-1.3.jar google-api-client-1.6.0-beta.jar google-api-client-extensions-1.6.0-beta.jar google-api-client-extensions-android2-1.6.0-beta.jar google-api-services-calendar-v3-1.3.1-beta.jar google-api-services-latitude-v1-1.3.0-beta.jar google-http-client-1.6.0-beta.jar google-http-client-extensions-1.6.0-beta.jar google-http-client-extensions-android2-1.6.0-beta.jar google-oauth-client-1.6.0-beta.jar google-oauth-client-extensions-1.6.0-beta.jar gson-1.7.1.jar guava-r09.jar httpclient-4.0.3.jar httpcore-4.0.1.jar jackson-core-asl-1.9.1.jar