Titanium android Scrollable View

Anyone can told me what is the problem why will no display the image on emulator ? the url is the text file create by array.Any problem with my looping?

var win =Ti.UI.createWindow();
 
var url = 'https://dl.dropboxusercontent.com/u/238879049/Scrollable/DataStructure.txt';
 
var client = Ti.Network.createHTTPClient({
    onload:function(e){
        var jsonString=JSON.parse(this.responseText);
 
        for(var i=0;i<jsonString.length;i++){
            var img = Ti.createImageView({
                image:jsonString[i].img
            });
 
            Ti.API.info('test'); 
 
            var imgWrapper = Ti.UI.createScrollView({
                maxZoomScale:2.0
            });
            imgWrapper.add(img);
 
            var photosView = Ti.UI.createScrollableView({
                showPagingControl:true,
                views:[imgWrapper]
            });
            win.add(photosView);
 
        }//end loop
    },
    onerror:function(e){
        alert('Connection Lost');
    },
    timeout:20000
});
 
client.open('GET',url);
client.send;
 
win.open();