title: How to trigger events after ending all calls?
body: <p>I am new in android.</p>
  
  <ul>
  <li>I want to <strong>trigger incomming and outgoing calls</strong>, and <strong>code should be executed when any call( incomming and outgoing) started and ended</strong>...</li>
  <li>I know that BroadcastReceiver is helpful for that. But can u give me the code/idea for that..</li>
  </ul>
  
  <p>Thanks in advance...</p>