Snackbar snackbar = Snackbar.make(getView(), R.string.elderly_register_success, Snackbar.LENGTH_LONG);
View snackbarView = snackbar.getView();
TextView textView = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);
textView.setMaxLines(4);  // show multiple line
snackbar.setAction(R.string.yes_text, (v) -> {
  mListener.onFormAssessment(elderly);
});
snackbar.show();