Using Analytic in android native application.

Hi, I am developing simple android application. I want to use analytic in my application. I crate following simple application

var win = Ti.UI.createWindow(
{
    backgroundColor:'#fff'
})
var _button = Ti.UI.createButton(
{
    height:'50dp',
    width:'100dp'
});
win.add(_button)
win.open();
_button.addEventListener('click', function(e)
{
    alert('click on button');
    Titanium.Analytics.featureEvent('button click');
});

I checked <analytics> true <analytics> and also guid value is valid one. I signed my application with key for distribution. and I installed this signed application on my android device(android 2.2) . Now problem is that my app not generating any analytic records.I have checked in my apps on appcelerator site. It showing: Analytics are not being gathered for this app. Is there any way to handle this problem. need help.. thank you..