title: Android + Facebook + Hide the facebook screen on application load?
body: <p>I'm learning to incorporate the facebook sdk into an existing android application.  I believe I have everything working well, however, my app shows a blank facebook page w/ progress loader whenever my application loads.  Is this intentional?  Can this page be hidden somehow?</p>
  
  <pre><code>public class MainActivity extends ListActivity{
      Facebook facebook = new Facebook("***************");
      String FILENAME = "AndroidSSO_data";
      private SharedPreferences mPrefs;
      ...
      @Override
          public void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.main);
  
              /*
               * Get existing access_token if any
               */
              mPrefs = getPreferences(MODE_PRIVATE);
              String access_token = mPrefs.getString("access_token", null);
              long expires = mPrefs.getLong("access_expires", 0);
              if(access_token != null) {
                  facebook.setAccessToken(access_token);
              }
              if(expires != 0) {
                  facebook.setAccessExpires(expires);
              }
  
              /*
               * Only call authorize if the access_token has expired.
               */
              if(!facebook.isSessionValid()) {
  
                  facebook.authorize(this, new DialogListener() {
                      @Override
                      public void onComplete(Bundle values) {}
  
                      @Override
                      public void onFacebookError(FacebookError error) {}
  
                      @Override
                      public void onError(DialogError e) {}
  
                      @Override
                      public void onCancel() {}
  
                  });
              }
      ...
      //thread is created here to populate listview data
      }
  }
  </code></pre>
  
  <p>UPDATE:  I now have the key hash working.  I still see the default facebook page with progress loader before my listview is displayed.  I'm also presented with the Permissions page everytime I launch the app now.</p>
  
  <p>NEW UPDATE:
  While logged into the official FB app (on the emulator), when I trace facebook.isSessionValid() from my application I receive "false".  Is this a bug?  Any additional help is appreciated!</p>