iOS 7 UIKeyCommand keydown/keyup and keycode input implementation for a UIResponder. Private API, of course…

gistfile1.m

-(BOOL)canBecomeFirstResponder
{
	return YES;
}

-(UIKeyCommand *)_keyCommandForEvent:(UIEvent *)event // UIPhysicalKeyboardEvent
{
	NSLog(@"keyCommandForEvent: %@\n\
		  type = %i\n\
		  keycode = %@\n\
		  keydown = %@\n\n",
		  event.debugDescription,
		  event.type,
		  [event valueForKey:@"_keyCode"],
		  [event valueForKey:@"_isKeyDown"]);
	
	return  [UIKeyCommand keyCommandWithInput:nil modifierFlags:nil action:@selector(processKeyInput:)];
}