[Маэстро]

используется некий OnKeyListener()...

edittext.setOnKeyListener(new OnKeyListener() 
{
 public boolean onKey(View v, int keyCode, KeyEvent event) 
{

if (keyCode == KeyEvent.KEYCODE_ENTER)// key code for virtual keyboard next
 {
 System.out.println("Event catched>>>>>>>>>>>>>>");
 edittext.requestFocus();
 }
   return false;
 }
});