title: How can I package pack a service into a apk, without any other activity?
body: <p>I want to make a service run in its own process, and called through AIDL.</p>
  
  <p>Most important, as a stand alone application, can be installed from a apk.</p>
  
  <p>could I ? how to do it.</p>
  
  <p>sorry for my poor English.</p>