Window Load in Titanium

How can i achieve load event of a window? What i want is , i have a remote data connected for advertisement, so i want to display ads on home screen when the app.js is opened. i want to call a function on window open/load that fetches the remote data. thanks

Hello, You can do code in open event listener of window.

Win.addEventListener("open",function(){
 
 
alert("onload");
// Preform network task here....
 ActInd = Titanium.UI.createActivityIndicator({
height:50,
message:"Requesting..",
width:10
});
 
 ActInd.show();
 
var xhr = Titanium.Network.createHTTPClient();
xhr.ondatastream = function(e) { Titanium.UI.currentWindow.add(ActInd ); };
xhr.onload = function() {
 // Data comes in this block so after finishing you may hid indicator
        ActInd.hide();
}
 
xhr.onerror = function(e) {
Ti.API.info("error = " + e.error);
ActInd.hide();
var alertDialog = Titanium.UI.createAlertDialog({
    message: 'Sorry No Network !',
    buttonNames: ['OK','']
});
 
alertDialog.show();
}; xhr.open('POST','https://www.your string);
xhr.setTimeout(20000);
xhr.send(SendRequest); 
});

Not working :( no popup occurred , Well, let me mention i am working on Mobile Web application so is there any change occur in load event. thanks