android - Error to updating EditText -

on devices, code, edittext to_quantity not updated in real time during insertion of value converted in edittext from_quantity. can problem?

edit text from_quantity:

from_quantity.setonkeylistener(new onkeylistener(){      public boolean onkey(view v, int keycode, keyevent event){          try{         if(!(double.isnan(double.valueof(from_quantity.gettext().tostring())))){                                                   convert(from_quantity.gettext().tostring(), "to");         }         }catch(numberformatexception e){             log.d("error", e.tostring());         }             return false;         }         });              from_quantity.setontouchlistener(new ontouchlistener(){                              public boolean ontouch(view v, motionevent event) {                                     //clear quantities                                     from_quantity.settext("");                                     to_quantity.settext("");                                     return false;                             }              }); 

edit text to_quantity:

to_quantity.setonkeylistener(new onkeylistener() {      public boolean onkey(view v, int keycode, keyevent event) {          try{             if(!(double.isnan(double.valueof(to_quantity.gettext().tostring())))) {                   convert(to_quantity.gettext().tostring(), "from");             }           } catch(numberformatexception e) {                log.d("error", e.tostring());           }           return false;      } });   to_quantity.setontouchlistener(new ontouchlistener(){       public boolean ontouch(view v, motionevent event) {           //clear quantities           from_quantity.settext("");           to_quantity.settext("");           return false;       }  }); 

if use soft keyboard of device, onkeylistener not called. should use textwatcher.

onkeylistener not working soft keyboard (android)