Fetch doesn't work offline

I'm triying to fetch a collection with network disabled and doesn't work, page doesn't load the rows. Can someone help me with this?

My code:

var args = arguments[0] || {};
var rootsCollection = Alloy.Collections.sqlroots;
 
function itemTransform(item){
        Ti.API.info("item", item.title);
        for(var prop in item){
            Ti.API.info(prop);
        }
        var transformedItem = {
            title:      item.name,
            id:         item.id,
            hasChild:   true
        };
 
        // PERSONALIZACIÓN DE FILAS
        var row = Ti.UI.createTableViewRow({
            id:             item.id,
            objName:        'row',
            touchEnabled:   true,
            hasChild:       true,
            height:         50
        });
 
        row.add(Ti.UI.createImageView({
            /* // Para colocar icono
            image: item.icon,
            left: -10,
            height: 30,
            width: "auto"
            */
        }));
 
        row.add(Ti.UI.createLabel({
            objName:        'label',
            text:           item.name,
            color:          "#404245",
            //textAlign:        Ti.UI.TEXT_ALIGNMENT_LEFT, // devuelve 0, y no tiene efecto en la alineación
            left: 14,                                      // left 14 para alinear a la izquierda sin icono, 44 cuando icono
            font: {
                fontSize:   "17dp",
                fontFamily: 'Helvetica Neue',
                lineHeight: "22dp"
            }
        }));
 
        return row;
        // END PERSONALIZACIÓN DE FILAS
}
 
function doRootClick(e){
    Alloy.Globals.idRoot = e.rowData.id;
    var controller = Alloy.createController('gama');
    var view = controller.getView();
    Alloy.CFG.navgroup.open(view);
}
 
if(Ti.Network.online){
    var sqlRoots = Alloy.Collections.sqlroots;
 
    sqlRoots.reset();
 
    Alloy.Collections.roots.fetch({
 
        success: function(dummy, data) {
 
            _.each(data, function(item) {
                for (var itemProp in item){
                    Ti.API.info(itemProp);
                }
                Ti.API.info("item title", item.name);
                var root = Alloy.createModel("sqlroots",{
                    name: item.name,
                    id: item.id,
                    description: item.description,
                    icon: item.icon,
                });
                Alloy.Collections.roots.add(root);
                root.save();
                rootsCollection.fetch();
            });
        }
 
    });
}
 
    rootsCollection.fetch();
    rootsCollection.on('fetch', function (e) {
        var collectionData = [];
        var models = rootsCollection.toJSON();
            models.each(function(item){
                var transFormedData = itemTransform(item);
                collectionData.push(transFormedData);   
            });
        $.rootsTable.setData(collectionData);
    });