phonegap save xml file local

How can i save files local on the device with phonegap? i make an ajax call to an external address but i want to make 2 ajax call, one to save the xml file and on success i want to do another ajax call but to the local file i just saved? Did u understand?

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$.ajax({
            type: 'GET',
            url: this.settings.dataLocation + (this.settings.dataType === 'jsonp' ? (this.settings.dataLocation.match(/\?/) ? '&' : '?') + 'callback=?' : ''),
            // Passing the lat, lng, and address with the AJAX request so they can optionally be used by back-end languages
            data: {
                'origLat': lat,
                'origLng': long,
                'origAddress': address
            },
            cache: true,
            dataType: dataTypeRead,
            jsonpCallback: (this.settings.dataType === 'jsonp' ? this.settings.callbackJsonp : null)
        }).done(function(p) {
            d.resolve(p);

            // Loading remove
            if (_this.settings.loading === true) {
                $('#loader').hide();
                $('.wrapper').show();
            }
            $('h3.search-for').text(address);
            localStorage.setItem('CurrentAddress', address);

        }).fail(d.reject);
        return d.promise();
    },

Cheers!