capture data from DropDownButton in flutter and send it to the database - flutter

Question

I'm new to flutter app development and would like to ask for your help
I already learned to capture the data of a TextFormField but with the DropDownButtons I have no idea how it is I try to use controller to put a name but I get an error
I have a DropDownButton and it works for me, it is loading the list successfully and I would like to know, how to capture the data I select in the DropDownButton and send it to my database
This is the code that I am using:
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key}) : super(key: key);
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String _mySelection;
final String url = "http://webmyls.com/php/getdata.php";
List data = List();
Future<String> getSWData() async {
var res = await http
.get(Uri.encodeFull(url), headers: {"Accept": "application/json"});
var resBody = json.decode(res.body);
setState(() {
data = resBody;
});
print(data);
return "Sucess";
}
#override
void initState() {
super.initState();
this.getSWData();
}
#override
Widget build(BuildContext context) {
return new Scaffold(
body: new Center(
child: new DropdownButton(
//data != null,
isDense: true,
hint: new Text("Select"),
items: data.map((item) {
return new DropdownMenuItem(
child: new Text(item['item_name']),
value: item['id'].toString(),
);
}).toList(),
onChanged: (newVal) {
setState(() {
_mySelection = newVal;
});
},
value: _mySelection,
),
),
);
}
}
I hope you can help me.

Answer 1

the latest dropdown value is always stores in your _mySelection. So the only thing you should do is to save _mySelection in your database.