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Description:

dropdown formfield

Dropdown form field #
A dropdown form field using a dropdown button inside a form field.
Demo #

Features #

Can be used as regular form field.
Simple to implement.
Simple and intuitive to use in the app.
Provides validation of data.
Provides requirement of the field.
Follows the app theme and colors.

Example #
import 'package:dropdown_formfield/dropdown_formfield.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}

class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
String _myActivity;
String _myActivityResult;
final formKey = new GlobalKey<FormState>();

@override
void initState() {
super.initState();
_myActivity = '';
_myActivityResult = '';
}

_saveForm() {
var form = formKey.currentState;
if (form.validate()) {
form.save();
setState(() {
_myActivityResult = _myActivity;
});
}
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Dropdown Formfield Example'),
),
body: Center(
child: Form(
key: formKey,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Container(
padding: EdgeInsets.all(16),
child: DropDownFormField(
titleText: 'My workout',
hintText: 'Please choose one',
value: _myActivity,
onSaved: (value) {
setState(() {
_myActivity = value;
});
},
onChanged: (value) {
setState(() {
_myActivity = value;
});
},
dataSource: [
{
"display": "Running",
"value": "Running",
},
{
"display": "Climbing",
"value": "Climbing",
},
{
"display": "Walking",
"value": "Walking",
},
{
"display": "Swimming",
"value": "Swimming",
},
{
"display": "Soccer Practice",
"value": "Soccer Practice",
},
{
"display": "Baseball Practice",
"value": "Baseball Practice",
},
{
"display": "Football Practice",
"value": "Football Practice",
},
],
textField: 'display',
valueField: 'value',
),
),
Container(
padding: EdgeInsets.all(8),
child: RaisedButton(
child: Text('Save'),
onPressed: _saveForm,
),
),
Container(
padding: EdgeInsets.all(16),
child: Text(_myActivityResult),
)
],
),
),
),
);
}
}
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License #
This project is licensed under the BSD License. See the LICENSE file for details.