Ok, let’s see:
1 - I created a Vertical Arrangement and put a Horizontal Arrangement and inside it I put a Textbox and a button with an image. Below the arrangement I put a Custom Listview (in my case. It works with a normal Listview too), as you can see in the picture:
2 - In the Blocks Editor I did this, to execute a search when you click in the button:
3 - To fill the listview I did this:
And that’s it!!!
PS 1: Note that I’m using the Dialogs Extension from Helios/Mika. But it works with a normal Notifier too.
PS: In my case I am filling the listview with a JSON data from my remote database. But it works with other ways, with no problem.
Hope this helps