[Kangool]

Hi i have new problem

i write me a little funktion to get epg data fo my stalker addon
wich i added as "plot"
i build the list in this way:

python:
                url = build_url({

                    'mode': 'check', 

                    'cmd': cmd,

                    'epgid': epgid,

                    'tmp' : tmp, 

                    'title' : name,

                    'genre_name' : genre_name,

                    'logo_url' : logo_url,  

                    'portal' : json.dumps(portal)

                    })





                li = xbmcgui.ListItem(name)

                li.setArt({'icon':logo})

                li.setInfo(type='Video', infoLabels={ 

                    'title': name,

                    'count' : number,

                    'plot' : load_channels.getShortEPG(portal['mac'], portal['url'], portal['serial'], addondir, epgid),

                    })



                xbmcplugin.addDirectoryItem(handle=addon_handle, url=url, listitem=li)

but in this way it download epgdata for every item in the list first bevor it shows me the list with the channels.
if i select a genre with more than 100 channels for example it takes very long time until it generates the list and show

is there a way to do the epg download (run the function) only if one item is selectet.
in this way i got one extra bonus....epg is always actual
like it works on the stb...

i am not a coder
sorry for my bad english

Thanks for help