Simple form maker for Flutter Framework
Alternatives To Flutter_form_builder
Project NameStarsDownloadsRepos Using ThisPackages Using ThisMost Recent CommitTotal ReleasesLatest ReleaseOpen IssuesLicenseLanguage
Flutter_form_builder1,264121710 days ago147July 13, 202232mitDart
Simple form maker for Flutter Framework
6 days agobsd-2-clauseDart
flutter项目- 实现一些常用效果、封装通用组件和工具类
Card_settings47110111 days ago77October 08, 202122mitDart
A flutter package for building card based forms.
Form_bloc397518 months ago48December 06, 202194Dart
🔥 Dart and Flutter Package 🔥 Easy Form State Management using BLoC pattern 🔥 Wizard/stepper forms, asynchronous validation, dynamic and conditional fields, submission progress, serialization and more! 🔥
Reactive_forms372128 days ago96August 07, 202263mitDart
This is a model-driven approach to handling form inputs and validations, heavily inspired in Angular's Reactive Forms
Flutter_dynamic_forms127132 years ago13May 30, 202115mitDart
A collection of flutter and dart libraries allowing you to consume complex external forms at runtime.
Modal_progress_hud11650134 years ago10March 19, 20193mitDart
A simple modal progress HUD (heads-up display, or progress indicator) for flutter
18 days ago18mitDart
Flutter library to create beautiful surveys (aligned with ResearchKit on iOS)
13 months ago3February 02, 202012apache-2.0Dart
A flutter plugin to use convert Json to Form
5 months ago10September 02, 20222otherDart
🧪 Lightweight Flutter forms library
Alternatives To Flutter_form_builder
Select To Compare

Alternative Project Comparisons

Flutter Form Builder

This package helps in creation of data collection forms in Flutter by removing the boilerplate needed to build a form, validate fields, react to changes and collect final user input.

Also included are common ready-made form input fields for FormBuilder. This gives you a convenient way of adding common ready-made input fields instead of creating your own FormBuilderField from scratch.

Pub Version GitHub Workflow Status Codecov CodeFactor Grade


  • Create a form with several type of inputs
  • Get values from form by easy way
  • Apply validators to inputs fields
  • React to form fields changes and validations
Complete Form Sign Up Dynamic Fields Conditional Form
Gif demostration with all fields Gif demostration sign up form Gif demostration dynamic fields Gif demostration conditional fields


The currently supported fields include:

  • FormBuilderCheckbox - Single checkbox field
  • FormBuilderCheckboxGroup - List of checkboxes for multiple selection
  • FormBuilderChoiceChip - Creates a chip that acts like a radio button.
  • FormBuilderDateRangePicker - For selection of a range of dates
  • FormBuilderDateTimePicker - For Date, Time and DateTime input
  • FormBuilderDropdown - Used to select one value from a list as a Dropdown
  • FormBuilderFilterChip - Creates a chip that acts like a checkbox
  • FormBuilderRadioGroup - Used to select one value from a list of Radio Widgets
  • FormBuilderRangeSlider - Used to select a range from a range of values
  • FormBuilderSlider - For selection of a numerical value on a slider
  • FormBuilderSwitch - On/Off switch field
  • FormBuilderTextField - A Material Design text field input


In order to create an input field in the form, along with the label, and any applicable validation, there are several attributes that are supported by all types of inputs namely:

Attribute Type Default Required Description
name String Yes This will form the key in the form value Map
initialValue T null No The initial value of the input field
enabled bool true No Determines whether the field widget will accept user input.
decoration InputDecoration InputDecoration() No Defines the border, labels, icons, and styles used to decorate the field.
validator FormFieldValidator<T> null No A FormFieldValidator that will check the validity of value in the FormField
onChanged ValueChanged<T> null No This event function will fire immediately the the field value changes
valueTransformer ValueTransformer<T> null No Function that transforms field value before saving to form value. e.g. transform TextField value for numeric field from String to num
The rest of the attributes will be determined by the type of Widget being used.



No specific setup required: only install the dependency and use :)

Basic use

final _formKey = GlobalKey<FormBuilderState>();

    key: _formKey,
    child:  FormBuilderTextField(
        name: 'text',
        onChanged: (val) {
            print(val); // Print the text value write into TextField

See pub.dev example tab or github code for more details

Specific uses

Building your own custom field

To build your own field within a FormBuilder, we use FormBuilderField which will require that you define your own field. Read this article for step-by-step instructions on how to build your own custom field.

var options = ["Option 1", "Option 2", "Option 3"];
  name: "name",
  validator: FormBuilderValidators.compose([
  builder: (FormFieldState<dynamic> field) {
    return InputDecorator(
      decoration: InputDecoration(
        labelText: "Select option",
            EdgeInsets.only(top: 10.0, bottom: 0.0),
        border: InputBorder.none,
        errorText: field.errorText,
      child: Container(
        height: 200,
        child: CupertinoPicker(
          itemExtent: 30,
          children: options.map((c) => Text(c)).toList(),
          onSelectedItemChanged: (index) {

Programmatically changing field value

You can either change the value of one field at a time like so:


Or multiple fields value like so:

  'age': '50',
  'slider': 6.7,
  'filter_chip': ['Test 1'],
  'choice_chip': 'Test 2',
  'rate': 4,
  'chips_test': [
        '[email protected]', 

Programmatically inducing an error

Using form state key or field state key
final _formKey = GlobalKey<FormBuilderState>();
final _emailFieldKey = GlobalKey<FormBuilderFieldState>();
  key: _formKey,
  child: Column(
    children: [
        key: _emailFieldKey,
        name: 'email',
        decoration: const InputDecoration(labelText: 'Email'),
        validator: FormBuilderValidators.compose([
        child: const Text('Submit'),
        onPressed: () async {
          if(await checkIfEmailExists()){
            // Either invalidate using Form Key
            _formKey.currentState?.fields['email']?.invalidate('Email already taken');
            // OR invalidate using Field Key
            _emailFieldKey.currentState?.invalidate('Email already taken');

When use invalidate and validate methods, can use two optional parameters configure the behavior when invalidate field or form, like focus or auto scroll. Take a look on method documentation for more details

Using InputDecoration.errorText

Declare a variable to hold your error:

String _emailError;

Use the variable as the errorText within InputDecoration

  name: 'email',
  decoration: InputDecoration(
    labelText: 'Email',
    errorText: _emailError,
  validator: FormBuilderValidators.compose([

Set the error text

  child: Text('Submit'),
  onPressed: () async {
    setState(() => _emailError = null);
    if(await checkIfEmailExists()){
      setState(() => _emailError = 'Email already taken.');

Conditional validation

You can also validate a field based on the value of another field

  decoration: InputDecoration(labelText: 'My best language'),
  name: 'my_language',
  validator: FormBuilderValidators.required(),
  options: [
    .map((lang) => FormBuilderFieldOption(value: lang))
    .toList(growable: false),
    name: 'specify',
        InputDecoration(labelText: 'If Other, please specify'),
    validator: (val) {
      if (_formKey.currentState.fields['my_language']?.value ==
              'Other' &&
          (val == null || val.isEmpty)) {
        return 'Kindly specify your language';
      return null;

Implement reset, clear or other button into field

If you can add some button to reset specific field, can use the decoration parameter like this:

List<String> genderOptions = ['Male', 'Female', 'Other'];

  name: 'gender',
  decoration: InputDecoration(
    labelText: 'Gender',
    initialValue: 'Male',
    suffix: IconButton(
      icon: const Icon(Icons.close),
      onPressed: () {
    hintText: 'Select Gender',
  items: genderOptions
      .map((gender) => DropdownMenuItem(
            alignment: AlignmentDirectional.center,
            value: gender,
            child: Text(gender),

Or reset value like this:

class ClearFormBuilderTextField extends StatefulWidget {
  const ClearFormBuilderTextField({super.key});

  State<ClearFormBuilderTextField> createState() =>

class _ClearFormBuilderTextFieldState
    extends State<ClearFormBuilderTextField> {
  final ValueNotifier<String?> text = ValueNotifier<String?>(null);
  final textFieldKey = GlobalKey<FormBuilderFieldState>();

  Widget build(BuildContext context) {
    return FormBuilderTextField(
      autovalidateMode: AutovalidateMode.always,
      name: 'age',
      key: textFieldKey,
      onChanged: (value) {
        text.value = value;
      decoration: InputDecoration(
        labelText: 'Age',
        suffixIcon: ValueListenableBuilder<String?>(
          valueListenable: text,
          child: IconButton(
            onPressed: () => textFieldKey.currentState?.didChange(null),
            tooltip: 'Clear',
            icon: const Icon(Icons.clear),
          builder: (context, value, child) =>
              (value?.isEmpty ?? true) ? const SizedBox() : child!,



You have some ways to contribute to this packages

  • Beginner: Reporting bugs or request new features
  • Intermediate: Implement new features (from issues or not) and created pull requests
  • Advanced: Join to organization like a member and help coding, manage issues, dicuss new features and other things

See contribution file for more details

Questions and answers

You can question or search answers on Github discussion or on StackOverflow


Donate or become a sponsor of Flutter Form Builder Ecosystem

Become a Sponsor



Take a look to our awesome ecosystem and all packages in there

Thanks to

All contributors

Popular Flutter Projects
Popular Form Projects
Popular User Interface Categories
Related Searches

Get A Weekly Email With Trending Projects For These Categories
No Spam. Unsubscribe easily at any time.
Form Validation