Flutter Futurebuilder showing error when showing snapshot data value - flutter

Question

I am using Future builder in app and its working fine but when data load and when i am showing it in Text widget its showing this error
Class '_InternalLinkedHashMap<String, dynamic>' has no instance getter 'approved_value'.
Receiver: _LinkedHashMap len:31
Tried calling: approved_value
My code
class _ClaimsScreenState extends State<ClaimsScreen> {
#override
initState() {
super.initState();
doSomeAsyncStuff();
}
Future<List> doSomeAsyncStuff() async {
final storage = new FlutterSecureStorage();
String value = await storage.read(key: 'health_card');
print(value);
String url2 =
'api.com';
final response2 = await http.get(url2);
var Data = json.decode(response2.body);
print(Data);
var DisplayData = Data["records"];
return DisplayData;
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text('IGI GENERAL INSURANCE'),
),
body: FutureBuilder<List>(
future: doSomeAsyncStuff(),
builder: (BuildContext context, AsyncSnapshot<List> snapshot) {
if (snapshot.hasData) {
print('ss');
print(snapshot.data);
return ListView.builder(
itemCount: snapshot.data.length,
itemBuilder: (BuildContext context, int index) {
return Card(
child: Column(
children: <Widget>[
Row(
children: <Widget>[
Row(
children: <Widget>[
Text('Approved Value:'),
Text(snapshot.data[index].approved_value)
],
),
Row(
children: <Widget>[
Text('Patient Name:'),
Text(snapshot.data[index].patient_name)
],
)
],
),
Row(
children: <Widget>[
Row(
children: <Widget>[
Text('Claimed Value:'),
Text(snapshot.data[index].claimed_value)
],
),
Row(
children: <Widget>[
Text('status:'),
Text(snapshot.data[index].patient_name)
],
)
],
)
],
),
);
});
} else if (snapshot.hasError) {
return Padding(
padding: const EdgeInsets.only(top: 16),
child: Text('Error: ${snapshot.error}'),
);
} else {
return Padding(
padding: EdgeInsets.only(top: 16),
child: Text('Awaiting result...'),
);
}
}),
);
}
}
I am using listview builder in future builder because the values are in array and need to show all in text widget
I am not sure why its showing this error if remove the value its working fine just when i show the values in Text widget then its showing error.

Answer 1

snapshot.data[index] returns a Map. The Map class does not have an approved_value getter. You likely intended to do snapshot.data[index]['approved_value'] instead.