title: useCurrentLocation without center and counting distance between two markers in sencha touch 2
body: <p>I want to create some simple navigation in sencha touch 2. I have questions about:</p>
  
  <ol>
  <li><p>How to load Google maps with current location only once, when we start app</p></li>
  <li><p>How two get the distance between two markers?</p></li>
  </ol>
  
  <p>Here's my Position.js (Map rendering view):</p>
  
  <pre><code>Ext.define('GS.view.Position', {
  extend: 'Ext.Map',
  
  xtype: 'map',
  
  config: {
      title: 'Position',
      iconCls: 'time',
      useCurrentLocation: false,
      mapOptions: {
          zoom: 19
      },
      listeners: {
          maprender : function(comp, map){
              new google.maps.Marker({
                  position: new google.maps.LatLng(this._geo.getLatitude(), this._geo.getLongitude()),
                  map: map
              }); 
              new google.maps.Marker({
                  position: new google.maps.LatLng(51.266064,15.562048),
                  map: map
              });
          }
      }
  }
  </code></pre>
  
  <p>});</p>
  
  <p>Waiting for Help
  Miłosz</p>