code: public void setOnKeyboardDone(final IntlPhoneInputListener listener) {
          mPhoneEdit.setOnEditorActionListener(new TextView.OnEditorActionListener() {
              @Override
              public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                  if (actionId == EditorInfo.IME_ACTION_DONE) {
                      listener.done(IntlPhoneInput.this, isValid());
                  }
                  return false;
              }
          });
      }
docs: Set keyboard done listener to detect when the user click "DONE" on his keyboard
  
  @param listener IntlPhoneInputListener