Flutter response after scan - flutter

Question

I need help regrading the scan using qr_code_scanner, the scanner successful but don't know how to call response either success or not. here example.
void _onQRViewCreated(QRViewController controller) {
this.controller = controller;
controller.scannedDataStream.listen((scanData) async {
controller.pauseCamera();
var response = await ScanApi.scan(scanData.code);
print(response);
result = scanData;
setState(() {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("check"),
content: SingleChildScrollView(
child: ListBody(
children: <Widget>[
Text('Data: ${scanData.code}'),
],
),
),
actions: <Widget>[
TextButton(
child: Text('Ok'),
onPressed: () {
Navigator.of(context).pop();
},
),
],
);
},
).then((value) => controller.resumeCamera());
and my example api post to get reponse.
static Future<dynamic> scan() async {
final url = Uri.parse(url);
final response = await http.post(url);
if (response.statusCode == 200) {
final String msg = json.decode(response.body)["status"];
print(msg);
return msg;
} else {
throw Exception();
}}

Answer 1

code like this and calling this class into widget.
class ScanResponse {
String status;
ScanResponse({this.status});
factory ScanResponse.fromJson(Map<String, dynamic> jsonData) {
return ScanResponse(
status: jsonData['status'],
);
}
}