Question

这是我如何处理请求：

              http.get(Uri.parse("${Constants.BASE_URL}categories/SubWithSubSub/${itemModel.id}"), headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                'X-Requested-With': 'XMLHttpRequest',
                'lang': Constants.LANG
              }).then((secondResponse) async {
                for (var item in secondResponse.body){ //error in this line
                  print(item);
                }
              });

这是我的回复：

{"success":true,"data":[{"id":149,"name":"Honey","subSub":{"viewAll":false,"data":[]}},{"id":150,"name":"Herbs","subSub":{"viewAll":false,"data":[]}}]}

我看到这个错误：

The type 'String' used in the 'for' loop must implement Iterable

Answer 1

我猜你在解码响应体中的字符串

试试这个

var responseList = jsonDecode(secondResponse.body);
for (var item in responseList ){ //error in this line
              print(item);
            }

如何在颤振中循环响应来自 HTTP 请求的响应

1 个答案: