title: How to make android aplication run every hour
body: <p>Hello, i'm try to make an auto run application in android,</p>
  <p>Example : App to read call log</p>
  <ol>
  <li><p>My app runs in background and it runs once in an hour to get all call log from past one hour.</p>
  <p>Can anyone help me to built an application like that?</p>
  </li>
  </ol>
  <p>Thanks for answers</p>