title: Can't Unregister a ContentObserver
body: <p>So, This is the Code im using in a Service :</p>
  
  <ol>
  <li><p>The Service Start &amp; Run this Code :</p>
  
  <pre><code>  SmsObserver smsSentObserver = new SmsObserver(new Handler(), this);
    this.getContentResolver().registerContentObserver(Uri.parse("content://sms"), true,            
    smsSentObserver); 
  </code></pre></li>
  </ol>
  
  <p>Then the Service stopSelf()</p>
  
  <p>2.The Service Start &amp; Run this Code :</p>
  
  <pre><code>      SmsObserver smsSentObserver = new SmsObserver(new Handler(), this);
        this.getContentResolver().unregisterContentObserver(smsSentObserver);
  </code></pre>
  
  <p>Then the Service stopSelf(),</p>
  
  <p>Problem : the ContentObserver is Not unregistred &amp; keep to receive the onChange Method</p>
  
  <p>Additionnal info : Everything worked fine before, it is related to KitKat or what is wrong Here ?</p>
  
  <p>Thanks</p>