title: What different between Android service's getApplicationContext() and Activity's getApplicationContext()?
body: <p>I use getApplicationContext() to init a third part class,</p>
  
  <pre><code>new UPlusFinder(getApplicationContext())
  </code></pre>
  
  <p>The third pard class need some info in AndroidManifest file.</p>
  
  <p>It return error when I call it in service And return OK when I call it in Activity, now I need init it in Service, How can I resolve this problem ?</p>