I think you misunderstood my question. I do understand about
registering listeners for callbacks to my application.
My question is about the android system - for all applications.

On Aug 6, 2:44 pm, Feign Narula <feign.nar...@gmail.com> wrote:
> Hi,
>
>    There are different listeners and you capture the keys by a KeyEvent
> class.
>
>
>
> On Sat, Aug 6, 2011 at 3:07 PM, Anil <anil.r...@gmail.com> wrote:
> > I built the android source and running it in the Eclipse debugger, am
> > trying to understand where is the point in the calling sequence when
> > it has all the information about the event.
> > So I run the calculator and press key '1'. There is a breakpoint at
> > EventListener.onClick()
> > In the call stack I see the event being dispatched; ViewRoot calling
> > PhoneWindow calling Panel, Layout, Button etc. until the handler is
> > reached.
> > questions:
> > 1) At what earliest point in the call hierarchy can I insert a println
> > saying, "Key was pressed, value is 1"?
> > 2) At what point does it know whether it was a soft key or a physical
> > key?
>
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