Override Menu Key Long Press And Launch An Application On Long Press

I want to do something like this- 1.Override the default action of the menu key long press (i.e. launching soft keyboard). 2.Whenever user long presses the menu key, my application

Solution 1:

Is this at all possible? How?

By making your own firmware, where you add this capability to the operating system, and by deploying your custom firmware on your own personal phone (and the phones of anyone else you can convince to run it).

This is not possible for a regular Android SDK application.