title: Facebook authentication from android using secret key and app id but not signature
body: <p>Basically I am developing an android application which can post  updates to my facebook wall through my web application server. So actually my web application post my updates in facebook.  I am authorizing my android application like a webapp and not as a native android app. I downloaded the facebook for android SDK and tried examples by creating signature using keytool. I am able to post the updates from android as native app. From my web application, I am not able to post my updates through the access token I get. </p>
  
  <p>I am not able to find an android example for facebook SDK which uses the secret key and app id for getting the access token.  Can you please give me some pointers on how to achieve the same using facebook SDK..</p>
  
  <p>Thanks.</p>