Remote Image Grid Gallery

Hi, merry christmas {if you're reading on post date}. I have some code, based on here: http://developer.appcelerator.com/question/125998/codeboxed-image-gallery-with-json-file . Basically, my problem is, that every time i load my app from new, it downloads all the images somewhere/somehow {i can tell, because my app become very very large over time} Is it possible to somehow use these images when booting the app from new, or to maybe delete them, i do knot know where they are located. Many Thanks for any help,

can u upload the screen shot for this

For caching of images I'am using the following code:

var cachedImageView = function(imageDirectoryName, url, imageViewObject, hires) {
    var filename = url.split('/');
    filename = filename[filename.length - 1];
    var file = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, imageDirectoryName, filename);
 
    if (file.exists()) {
        imageViewObject.image = file.nativePath;
    } else {
        var g = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, imageDirectoryName);
        if (!g.exists()) {
            g.createDirectory();
    };
    var xhr = Ti.Network.createHTTPClient();
    xhr.onload = function() {
        if (xhr.status == 200) {
            file.write(xhr.responseData);
            imageViewObject.image = file.nativePath;
        };
    };
    xhr.open('GET', url);
    xhr.send();
};