I need to set up a simple event listener to refresh a `ListView` once in a while. The problem is I don't know how could I generate an event.

I know that for events like key or button pressing I just need to implement the `Handler`. But in this specific case I actually need to generate the event, which will be fired every time another running thread of my app wakes up and refreshes its list of news from an RSS feed.

I've done everything, but got stuck in here. Can I get any suggestion or link with some more info on how to implement this?