【发布时间】：2020-12-21 07:05:11
【问题描述】：
我正在将复杂的 json 数据解析到我的颤振应用程序中。我在下面附上了我的代码和我的 json 数据。我正在将我的数据放入“newData”中。但是得到以下错误。
错误：“未处理的异常：类型 '_InternalLinkedHashMap
JSON 数据
{
"Status":200,
"Message":"Success",
"data":{
"TotalRecords":10,
"Records":[
{
"Id":1,
"title":"Smile Crowdfunding",
"shortDescription":"This foundation will bring smile on there faces",
"collectedValue":500,
"totalValue":5000,
"startDate":"05/05/2018",
"endDate":"10/06/2018",
"mainImageURL":"http://iphonedeveloperguide.com/oneinr/project1.jpg"
},
{
"Id":2,
"title":"Animal Funding",
"shortDescription":"This foundation will help animals",
"collectedValue":200,
"totalValue":10000,
"startDate":"10/05/2018",
"endDate":"11/06/2018",
"mainImageURL":"http://iphonedeveloperguide.com/oneinr/project2.jpg"
}
]
}
}
代码
class _ShowListState extends State<ShowList> {
var loading = false;
List<Record> dataModel = [];
Future<Null> getData() async{
final responseData = await http.get("https://xxxxxxx.json");
if(responseData.statusCode == 200){
Map<String, dynamic> map = jsonDecode(responseData.body);
LinkedHashMap<String,dynamic> data = map["data"];
List<dynamic> newData = data["Records"];
print("newData: $newData");
setState(() {
for(Map i in newData[1]){
dataModel.add(Record.fromJson(i));
print("newData: $data");
}
loading = false;
});
}
}
void initState() {
// TODO: implement initState
super.initState();
getData();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Machine Test'),
),
body: Container(
child: loading? Center(
child: CircularProgressIndicator()):
ListView.builder(
itemCount: dataModel.length,
itemBuilder: (context,i){
final nDataList = dataModel[i];
return Container(
child: Text(nDataList.title),
);
} ),
),
);
}
}
【问题讨论】：
-
去掉方括号：
Map i in newData[1]