flutter_form_builder 7.7.0 
flutter_form_builder: ^7.7.0 copied to clipboard
This package helps in creation of forms in Flutter by removing the boilerplate code, reusing validation, react to changes, and collect final user input.
import 'package:flutter/material.dart';
import 'package:flutter_form_builder/flutter_form_builder.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:form_builder_validators/form_builder_validators.dart';
import 'package:intl/intl.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter FormBuilder Demo',
debugShowCheckedModeBanner: false,
localizationsDelegates: const [
FormBuilderLocalizations.delegate,
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
],
supportedLocales: FormBuilderLocalizations.delegate.supportedLocales,
home: const CompleteForm(),
);
}
}
class CompleteForm extends StatefulWidget {
const CompleteForm({Key? key}) : super(key: key);
@override
State<CompleteForm> createState() {
return _CompleteFormState();
}
}
class _CompleteFormState extends State<CompleteForm> {
bool autoValidate = true;
bool readOnly = false;
bool showSegmentedControl = true;
final _formKey = GlobalKey<FormBuilderState>();
bool _ageHasError = false;
bool _genderHasError = false;
var genderOptions = ['Male', 'Female', 'Other'];
void _onChanged(dynamic val) => debugPrint(val.toString());
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Form Builder Example')),
body: Padding(
padding: const EdgeInsets.all(10),
child: SingleChildScrollView(
child: Column(
children: <Widget>[
FormBuilder(
key: _formKey,
// enabled: false,
onChanged: () {
_formKey.currentState!.save();
debugPrint(_formKey.currentState!.value.toString());
},
autovalidateMode: AutovalidateMode.disabled,
initialValue: const {
'movie_rating': 5,
'best_language': 'Dart',
'age': '13',
'gender': 'Male',
'languages_filter': ['Dart']
},
skipDisabled: true,
child: Column(
children: <Widget>[
const SizedBox(height: 15),
FormBuilderDateTimePicker(
name: 'date',
initialEntryMode: DatePickerEntryMode.calendar,
initialValue: DateTime.now(),
inputType: InputType.both,
decoration: InputDecoration(
labelText: 'Appointment Time',
suffixIcon: IconButton(
icon: const Icon(Icons.close),
onPressed: () {
_formKey.currentState!.fields['date']
?.didChange(null);
},
),
),
initialTime: const TimeOfDay(hour: 8, minute: 0),
// locale: const Locale.fromSubtags(languageCode: 'fr'),
),
FormBuilderDateRangePicker(
name: 'date_range',
firstDate: DateTime(1970),
lastDate: DateTime(2030),
format: DateFormat('yyyy-MM-dd'),
onChanged: _onChanged,
decoration: InputDecoration(
labelText: 'Date Range',
helperText: 'Helper text',
hintText: 'Hint text',
suffixIcon: IconButton(
icon: const Icon(Icons.close),
onPressed: () {
_formKey.currentState!.fields['date_range']
?.didChange(null);
},
),
),
),
FormBuilderSlider(
name: 'slider',
validator: FormBuilderValidators.compose([
FormBuilderValidators.min(6),
]),
onChanged: _onChanged,
min: 0.0,
max: 10.0,
initialValue: 7.0,
divisions: 20,
activeColor: Colors.red,
inactiveColor: Colors.pink[100],
decoration: const InputDecoration(
labelText: 'Number of things',
),
),
FormBuilderRangeSlider(
name: 'range_slider',
// validator: FormBuilderValidators.compose([FormBuilderValidators.min(context, 6)]),
onChanged: _onChanged,
min: 0.0,
max: 100.0,
initialValue: const RangeValues(4, 7),
divisions: 20,
activeColor: Colors.red,
inactiveColor: Colors.pink[100],
decoration:
const InputDecoration(labelText: 'Price Range'),
),
FormBuilderCheckbox(
name: 'accept_terms',
initialValue: false,
onChanged: _onChanged,
title: RichText(
text: const TextSpan(
children: [
TextSpan(
text: 'I have read and agree to the ',
style: TextStyle(color: Colors.black),
),
TextSpan(
text: 'Terms and Conditions',
style: TextStyle(color: Colors.blue),
// Flutter doesn't allow a button inside a button
// https://github.com/flutter/flutter/issues/31437#issuecomment-492411086
/*
recognizer: TapGestureRecognizer()
..onTap = () {
print('launch url');
},
*/
),
],
),
),
validator: FormBuilderValidators.equal(
true,
errorText:
'You must accept terms and conditions to continue',
),
),
FormBuilderTextField(
autovalidateMode: AutovalidateMode.always,
name: 'age',
decoration: InputDecoration(
labelText: 'Age',
suffixIcon: _ageHasError
? const Icon(Icons.error, color: Colors.red)
: const Icon(Icons.check, color: Colors.green),
),
onChanged: (val) {
setState(() {
_ageHasError = !(_formKey.currentState?.fields['age']
?.validate() ??
false);
});
},
// valueTransformer: (text) => num.tryParse(text),
validator: FormBuilderValidators.compose([
FormBuilderValidators.required(),
FormBuilderValidators.numeric(),
FormBuilderValidators.max(70),
]),
// initialValue: '12',
keyboardType: TextInputType.number,
textInputAction: TextInputAction.next,
),
FormBuilderDropdown<String>(
// autovalidate: true,
name: 'gender',
decoration: InputDecoration(
labelText: 'Gender',
suffix: _genderHasError
? const Icon(Icons.error)
: const Icon(Icons.check),
hintText: 'Select Gender',
),
validator: FormBuilderValidators.compose(
[FormBuilderValidators.required()]),
items: genderOptions
.map((gender) => DropdownMenuItem(
alignment: AlignmentDirectional.center,
value: gender,
child: Text(gender),
))
.toList(),
onChanged: (val) {
setState(() {
_genderHasError = !(_formKey
.currentState?.fields['gender']
?.validate() ??
false);
});
},
valueTransformer: (val) => val?.toString(),
),
FormBuilderRadioGroup<String>(
decoration: const InputDecoration(
labelText: 'My chosen language',
),
initialValue: null,
name: 'best_language',
onChanged: _onChanged,
validator: FormBuilderValidators.compose(
[FormBuilderValidators.required()]),
options:
['Dart', 'Kotlin', 'Java', 'Swift', 'Objective-C']
.map((lang) => FormBuilderFieldOption(
value: lang,
child: Text(lang),
))
.toList(growable: false),
controlAffinity: ControlAffinity.trailing,
),
FormBuilderSegmentedControl(
decoration: const InputDecoration(
labelText: 'Movie Rating (Archer)',
),
name: 'movie_rating',
// initialValue: 1,
// textStyle: TextStyle(fontWeight: FontWeight.bold),
options: List.generate(5, (i) => i + 1)
.map((number) => FormBuilderFieldOption(
value: number,
child: Text(
number.toString(),
style: const TextStyle(
fontWeight: FontWeight.bold),
),
))
.toList(),
onChanged: _onChanged,
),
FormBuilderSwitch(
title: const Text('I Accept the terms and conditions'),
name: 'accept_terms_switch',
initialValue: true,
onChanged: _onChanged,
),
FormBuilderCheckboxGroup<String>(
autovalidateMode: AutovalidateMode.onUserInteraction,
decoration: const InputDecoration(
labelText: 'The language of my people'),
name: 'languages',
// initialValue: const ['Dart'],
options: const [
FormBuilderFieldOption(value: 'Dart'),
FormBuilderFieldOption(value: 'Kotlin'),
FormBuilderFieldOption(value: 'Java'),
FormBuilderFieldOption(value: 'Swift'),
FormBuilderFieldOption(value: 'Objective-C'),
],
onChanged: _onChanged,
separator: const VerticalDivider(
width: 10,
thickness: 5,
color: Colors.red,
),
validator: FormBuilderValidators.compose([
FormBuilderValidators.minLength(1),
FormBuilderValidators.maxLength(3),
]),
),
FormBuilderFilterChip<String>(
autovalidateMode: AutovalidateMode.onUserInteraction,
decoration: const InputDecoration(
labelText: 'The language of my people'),
name: 'languages_filter',
selectedColor: Colors.red,
options: const [
FormBuilderChipOption(
value: 'Dart',
avatar: CircleAvatar(child: Text('D')),
),
FormBuilderChipOption(
value: 'Kotlin',
avatar: CircleAvatar(child: Text('K')),
),
FormBuilderChipOption(
value: 'Java',
avatar: CircleAvatar(child: Text('J')),
),
FormBuilderChipOption(
value: 'Swift',
avatar: CircleAvatar(child: Text('S')),
),
FormBuilderChipOption(
value: 'Objective-C',
avatar: CircleAvatar(child: Text('O')),
),
],
onChanged: _onChanged,
validator: FormBuilderValidators.compose([
FormBuilderValidators.minLength(1),
FormBuilderValidators.maxLength(3),
]),
),
FormBuilderChoiceChip<String>(
autovalidateMode: AutovalidateMode.onUserInteraction,
decoration: const InputDecoration(
labelText:
'Ok, if I had to choose one language, it would be:'),
name: 'languages_choice',
initialValue: 'Dart',
options: const [
FormBuilderChipOption(
value: 'Dart',
avatar: CircleAvatar(child: Text('D')),
),
FormBuilderChipOption(
value: 'Kotlin',
avatar: CircleAvatar(child: Text('K')),
),
FormBuilderChipOption(
value: 'Java',
avatar: CircleAvatar(child: Text('J')),
),
FormBuilderChipOption(
value: 'Swift',
avatar: CircleAvatar(child: Text('S')),
),
FormBuilderChipOption(
value: 'Objective-C',
avatar: CircleAvatar(child: Text('O')),
),
],
onChanged: _onChanged,
),
],
),
),
Row(
children: <Widget>[
Expanded(
child: ElevatedButton(
onPressed: () {
if (_formKey.currentState?.saveAndValidate() ?? false) {
debugPrint(_formKey.currentState?.value.toString());
} else {
debugPrint(_formKey.currentState?.value.toString());
debugPrint('validation failed');
}
},
child: const Text(
'Submit',
style: TextStyle(color: Colors.white),
),
),
),
const SizedBox(width: 20),
Expanded(
child: OutlinedButton(
onPressed: () {
_formKey.currentState?.reset();
},
// color: Theme.of(context).colorScheme.secondary,
child: Text(
'Reset',
style: TextStyle(
color: Theme.of(context).colorScheme.secondary),
),
),
),
],
),
],
),
),
),
);
}
}Metadata
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Publisher
flutterformbuilderecosystem.com
Metadata
This package helps in creation of forms in Flutter by removing the boilerplate code, reusing validation, react to changes, and collect final user input.
Repository (GitHub)
View/report issues
License
unknown (LICENSE)
