private TextWatcher watcher = new TextWatcher(){

 @Override
 public void afterTextChanged(Editable s) {
  // TODO Auto-generated method stub
 }

 @Override
 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
  // TODO Auto-generated method stub
 }

 @Override
 public void onTextChanged(CharSequence s, int start, int before, int count) {
  Log.d("TAG","[TextWatcher][onTextChanged]"+s);
 }
 
};

EditText et = (EditText)findViewById(R.id.edit);
et.addTextChangedListener(watcher);