showSnackbar method

Implementation

void showSnackbar(BuildContext context) {
  context.showSnackbar('snackbar 입니다.',
      extraButton: Tap(
        onTap: () {
          context.showErrorSnackbar('error');
        },
        child: '에러 보여주기 버튼'.text.white.size(13).make().centered().pSymmetric(h: 10, v: 5),
      ));
}