Hi, have you tried if any sketch  (just simple setup and draw without any libraries) runs for your android settings? which example are you referring to? I can confirm that the ControlP5accordion example works fine with processing 2.0b8 (API 10, 2.3.3) on different devices (nexus s, note 2, galaxy tablet). Have you checked the console output for error message feedback?

andreas schlegel, http://www.sojamo.de

Are you using the latest controlP5 version (2.0.4) https://code.google.com/p/controlp5/downloads/list ?

andreas schlegel, http://www.sojamo.de

I suspect there is an older version somewhere inside your sketchbook folder. the error messages indicate that some classes and methods cant be found. Accordion was added to version 0.5.7 so I suspect processing is loading a controlP5 version  0.5.4 or earlier. maybe an old controlP5.jar file is left and forgotten inside a sketches code folder?

Hi, you can customize a listbox but it is not trivial. you would need to create your own ListBox which extends controlP5's ListBox so that you can override the methods that handle the ListBoxItems/Button which you would need to customize (how to customize the ControlView of a Button? take a look at the ControlP5customView example, To add a custom controller to ControlP5 use controlP5.register( null , "" , yourListBoxInstance ); ).