How to get file info from mobile app

How to get file creation date in mobile application when downloading it from a gallery or from a file system?

Here is my code:

onFileTypePickerItemTap: function(el, index, target, record) {
    var source = record.get("Source");
    switch (source) {
        case Terrasoft.Configuration.FilesAndLinksDetailFileSources.Gallery:
            Terrasoft.Camera.captureFromGallery({
                success: this.onCameraCapture,
                failure: this.onFail,
                scope: this
            });
            break;
            ...
        }
    }
},

onCameraCapture: function(fileName, url) {

    Terrasoft.Mask.show({message: Terrasoft.LocalizableStrings.UploadingFile});
    if(fileName && url) {
        this.saveFile(fileName, url);
    } else {
        Terrasoft.Mask.hide();
    }
}