AndroidStudio-AAR and Gradle Support.
 Required: Maven3.1.1, android-maven-plugin3.8.0 over.
 Required: MAVEN_OPTS="-Xmx1024m -XX:MaxPermSize=256m".

Update the development environment.
 android-maven-plugin 3.8.0
 maven-pmd-plugin 3.0.1(and fixed source code)
 spring-core 3.2.5.RELEASE

#5 #6 #7 #12

* However, the following problems that occur in the eclipse is left.
Plugin execution not covered by lifecycle configuration: com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.8.0:consume-aar (execution: default-consume-aar, phase: compile)