plaid_link_flutter 1.0.0-beta.1 
plaid_link_flutter: ^1.0.0-beta.1 copied to clipboard
Official Plaid Link SDK for Flutter. Securely connect users' financial accounts on iOS and Android with Link, Layer, Headless, and Embedded Search flows.
example/lib/main.dart
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:plaid_link_flutter/plaid_link_flutter.dart';
void main() {
runApp(const LinkKitExampleApp());
}
class LinkKitExampleApp extends StatelessWidget {
const LinkKitExampleApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'LinkKit Examples',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF007AFF)),
scaffoldBackgroundColor: const Color(0xFFEEEEEE),
useMaterial3: true,
),
home: const ExampleListScreen(),
);
}
}
class ExampleListScreen extends StatefulWidget {
const ExampleListScreen({super.key});
@override
State<ExampleListScreen> createState() => _ExampleListScreenState();
}
class _ExampleListScreenState extends State<ExampleListScreen> {
late final Future<String?> _sdkVersion = PlaidLink.sdkVersion;
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFFEEEEEE),
body: SafeArea(
child: ListView(
children: [
const Padding(
padding: EdgeInsets.fromLTRB(20, 20, 20, 8),
child: Text(
'LinkKit Examples',
style: TextStyle(fontSize: 28, fontWeight: FontWeight.w700),
),
),
FutureBuilder<String?>(
future: _sdkVersion,
builder: (context, snapshot) {
return Padding(
padding: const EdgeInsets.only(left: 20, bottom: 12),
child: Text(
'SDK: ${snapshot.data ?? 'Loading...'}',
style: const TextStyle(
fontSize: 12,
color: Color(0xFF888888),
),
),
);
},
),
ExampleRow(
title: 'Plaid Link Session',
description: 'Create and open a Link session with a link token.',
onTap: () {
Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (_) => const PlaidLinkSessionScreen(),
),
);
},
),
ExampleRow(
title: 'Plaid Layer Session',
description: 'Create, open, and submit data to a Layer session.',
onTap: () {
Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (_) => const PlaidLayerSessionScreen(),
),
);
},
),
ExampleRow(
title: 'Plaid Headless Session',
description: 'Create and start a Headless Link session.',
onTap: () {
Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (_) => const PlaidHeadlessSessionScreen(),
),
);
},
),
ExampleRow(
title: 'Plaid Embedded Search',
description: 'Render embedded institution search in Flutter.',
onTap: () {
Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (_) => const PlaidEmbeddedSearchScreen(),
),
);
},
),
ExampleRow(
title: 'Sync FinanceKit',
description: 'Sync FinanceKit data on supported iOS devices.',
onTap: () {
Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (_) => const FinanceKitScreen(),
),
);
},
),
],
),
),
);
}
}
class PlaidLinkSessionScreen extends StatefulWidget {
const PlaidLinkSessionScreen({super.key});
@override
State<PlaidLinkSessionScreen> createState() => _PlaidLinkSessionScreenState();
}
class _PlaidLinkSessionScreenState extends State<PlaidLinkSessionScreen> {
final TextEditingController _tokenController = TextEditingController();
final List<LinkEvent> _events = <LinkEvent>[];
PlaidLinkSession? _session;
SessionState _state = SessionState.idle;
String? _errorMessage;
@override
void dispose() {
_tokenController.dispose();
super.dispose();
}
bool get _hasValidToken => isValidToken(_tokenController.text);
Future<void> _createSession() async {
final token = _tokenController.text.trim();
if (token.isEmpty) {
setState(() => _errorMessage = 'Please enter a link token');
return;
}
if (!isValidToken(token)) {
setState(() => _errorMessage = 'Invalid token format');
return;
}
setState(() {
_state = SessionState.loading;
_errorMessage = null;
_events.clear();
});
try {
final session = await createPlaidLinkSession(
LinkTokenConfiguration(
token: token,
onSuccess: (success) {
_showResultSheet(
title: 'Success',
rows: [
ResultRow('Public token', success.publicToken),
ResultRow(
'Institution',
success.metadata.institution?.name ?? '',
),
ResultRow(
'Accounts',
success.metadata.accounts.length.toString(),
),
ResultRow('Link session ID', success.metadata.linkSessionId),
],
);
},
onExit: (exit) {
_showResultSheet(
title: 'Exit',
rows: [
ResultRow('Status', exit.metadata.status?.value ?? ''),
ResultRow('Error code', exit.error?.errorCode ?? ''),
ResultRow('Error message', exit.error?.errorMessage ?? ''),
ResultRow('Link session ID', exit.metadata.linkSessionId),
],
);
},
onEvent: (event) {
_events.add(event);
if (event.eventName == LinkEventName.error) {
setState(() {
_state = SessionState.error;
_errorMessage =
event.metadata.errorMessage ?? 'Failed to create session.';
});
}
},
),
);
setState(() {
_session = session;
_state = SessionState.ready;
});
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
Future<void> _openSession() async {
try {
await _session?.open(false);
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
void _showResultSheet({
required String title,
required List<ResultRow> rows,
}) {
if (!mounted) {
return;
}
showModalBottomSheet<void>(
context: context,
isScrollControlled: true,
builder: (context) {
return ResultSheet(
title: title,
rows: rows,
events: List<LinkEvent>.of(_events),
onClose: () {
Navigator.of(context).pop();
_createSession();
},
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFFEEEEEE),
body: SafeArea(
child: ListView(
children: [
Align(
alignment: Alignment.centerLeft,
child: TextButton.icon(
onPressed: () => Navigator.of(context).pop(),
icon: const Icon(Icons.arrow_back),
label: const Text('Back'),
),
),
Padding(
padding: const EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const Text(
'Plaid Link Session Example',
style: TextStyle(fontSize: 24, fontWeight: FontWeight.w700),
textAlign: TextAlign.center,
),
const SizedBox(height: 12),
FutureBuilder<String?>(
future: PlaidLink.sdkVersion,
builder: (context, snapshot) {
return Text(
'LinkKit ${snapshot.data ?? 'Loading...'}',
style: const TextStyle(
fontSize: 12,
color: Color(0xFF888888),
),
);
},
),
const SizedBox(height: 24),
TokenInputView(
controller: _tokenController,
onChanged: () => setState(() {}),
),
const SizedBox(height: 20),
if (_state == SessionState.error && _errorMessage != null)
ErrorView(message: _errorMessage!),
const SizedBox(height: 16),
ConnectButton(
state: _state,
hasValidToken: _hasValidToken,
onCreate: _createSession,
onOpen: _openSession,
),
],
),
),
],
),
),
);
}
}
class PlaidLayerSessionScreen extends StatefulWidget {
const PlaidLayerSessionScreen({super.key});
@override
State<PlaidLayerSessionScreen> createState() =>
_PlaidLayerSessionScreenState();
}
class _PlaidLayerSessionScreenState extends State<PlaidLayerSessionScreen> {
final TextEditingController _tokenController = TextEditingController();
final TextEditingController _phoneController = TextEditingController();
final TextEditingController _dobController = TextEditingController();
final TextEditingController _paramsController = TextEditingController();
final List<LinkEvent> _events = <LinkEvent>[];
PlaidLayerSession? _session;
SessionState _state = SessionState.idle;
String? _errorMessage;
@override
void dispose() {
_tokenController.dispose();
_phoneController.dispose();
_dobController.dispose();
_paramsController.dispose();
super.dispose();
}
bool get _hasValidToken => isValidToken(_tokenController.text);
Future<void> _createSession() async {
final token = _tokenController.text.trim();
if (token.isEmpty) {
setState(() => _errorMessage = 'Please enter a link token');
return;
}
if (!isValidToken(token)) {
setState(() => _errorMessage = 'Invalid token format');
return;
}
setState(() {
_state = SessionState.loading;
_errorMessage = null;
_events.clear();
});
try {
final session = await createPlaidLayerSession(
LayerTokenConfiguration(
token: token,
onSuccess: (success) {
_showResultSheet(
title: 'Layer Success',
rows: [
ResultRow('Public token', success.publicToken),
ResultRow('Link session ID', success.metadata.linkSessionId),
],
);
},
onExit: (exit) {
_showResultSheet(
title: 'Layer Exit',
rows: [
ResultRow('Status', exit.metadata.status?.value ?? ''),
ResultRow('Error code', exit.error?.errorCode ?? ''),
ResultRow('Error message', exit.error?.errorMessage ?? ''),
],
);
},
onEvent: (event) => setState(() => _events.add(event)),
),
);
setState(() {
_session = session;
_state = SessionState.ready;
});
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
Future<void> _openSession() async {
try {
await _session?.open();
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
Future<void> _submit() async {
try {
await _session?.submit(
SubmissionData(
phoneNumber: emptyToNull(_phoneController.text),
dateOfBirth: emptyToNull(_dobController.text),
params: parseParams(_paramsController.text),
),
);
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
void _showResultSheet({
required String title,
required List<ResultRow> rows,
}) {
if (!mounted) {
return;
}
showModalBottomSheet<void>(
context: context,
isScrollControlled: true,
builder: (context) {
return ResultSheet(
title: title,
rows: rows,
events: List<LinkEvent>.of(_events),
onClose: () {
Navigator.of(context).pop();
_createSession();
},
);
},
);
}
@override
Widget build(BuildContext context) {
return ExampleDetailScaffold(
title: 'Plaid Layer Session Example',
children: [
TokenInputView(
controller: _tokenController,
onChanged: () => setState(() {}),
),
const SizedBox(height: 16),
SmallTextInputView(
label: 'Phone number',
hintText: '+15551234567',
controller: _phoneController,
),
const SizedBox(height: 12),
SmallTextInputView(
label: 'Date of birth',
hintText: 'YYYY-MM-DD',
controller: _dobController,
),
const SizedBox(height: 12),
SmallTextInputView(
label: 'Params',
hintText: 'key=value,key2=value2',
controller: _paramsController,
),
const SizedBox(height: 20),
if (_state == SessionState.error && _errorMessage != null)
ErrorView(message: _errorMessage!),
const SizedBox(height: 16),
ConnectButton(
state: _state,
hasValidToken: _hasValidToken,
createLabel: 'Create Layer Session',
openLabel: 'Open Layer Session',
onCreate: _createSession,
onOpen: _openSession,
),
const SizedBox(height: 12),
SecondaryButton(
label: 'Submit Layer Data',
enabled: _session != null,
onPressed: _submit,
),
],
);
}
}
class PlaidHeadlessSessionScreen extends StatefulWidget {
const PlaidHeadlessSessionScreen({super.key});
@override
State<PlaidHeadlessSessionScreen> createState() =>
_PlaidHeadlessSessionScreenState();
}
class _PlaidHeadlessSessionScreenState
extends State<PlaidHeadlessSessionScreen> {
final TextEditingController _tokenController = TextEditingController();
final List<LinkEvent> _events = <LinkEvent>[];
PlaidHeadlessSession? _session;
SessionState _state = SessionState.idle;
String? _errorMessage;
@override
void dispose() {
_tokenController.dispose();
super.dispose();
}
bool get _hasValidToken => isValidToken(_tokenController.text);
Future<void> _createSession() async {
final token = _tokenController.text.trim();
if (token.isEmpty) {
setState(() => _errorMessage = 'Please enter a link token');
return;
}
if (!isValidToken(token)) {
setState(() => _errorMessage = 'Invalid token format');
return;
}
setState(() {
_state = SessionState.loading;
_errorMessage = null;
_events.clear();
});
try {
final session = await createPlaidHeadlessSession(
LinkTokenConfiguration(
token: token,
onSuccess: (success) {
_showResultSheet(
title: 'Headless Success',
rows: [
ResultRow('Public token', success.publicToken),
ResultRow('Link session ID', success.metadata.linkSessionId),
],
);
},
onExit: (exit) {
_showResultSheet(
title: 'Headless Exit',
rows: [
ResultRow('Status', exit.metadata.status?.value ?? ''),
ResultRow('Error code', exit.error?.errorCode ?? ''),
ResultRow('Error message', exit.error?.errorMessage ?? ''),
],
);
},
onEvent: (event) => setState(() => _events.add(event)),
),
);
setState(() {
_session = session;
_state = SessionState.ready;
});
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
Future<void> _startSession() async {
try {
await _session?.start();
} catch (error) {
setState(() {
_state = SessionState.error;
_errorMessage = error.toString();
});
}
}
void _showResultSheet({
required String title,
required List<ResultRow> rows,
}) {
if (!mounted) {
return;
}
showModalBottomSheet<void>(
context: context,
isScrollControlled: true,
builder: (context) {
return ResultSheet(
title: title,
rows: rows,
events: List<LinkEvent>.of(_events),
onClose: () {
Navigator.of(context).pop();
_createSession();
},
);
},
);
}
@override
Widget build(BuildContext context) {
return ExampleDetailScaffold(
title: 'Plaid Headless Session Example',
children: [
TokenInputView(
controller: _tokenController,
onChanged: () => setState(() {}),
),
const SizedBox(height: 20),
if (_state == SessionState.error && _errorMessage != null)
ErrorView(message: _errorMessage!),
const SizedBox(height: 16),
ConnectButton(
state: _state,
hasValidToken: _hasValidToken,
createLabel: 'Create Headless Session',
openLabel: 'Start Headless Session',
onCreate: _createSession,
onOpen: _startSession,
),
],
);
}
}
class PlaidEmbeddedSearchScreen extends StatefulWidget {
const PlaidEmbeddedSearchScreen({super.key});
@override
State<PlaidEmbeddedSearchScreen> createState() =>
_PlaidEmbeddedSearchScreenState();
}
class _PlaidEmbeddedSearchScreenState extends State<PlaidEmbeddedSearchScreen> {
final TextEditingController _tokenController = TextEditingController();
final List<LinkEvent> _events = <LinkEvent>[];
String? _activeToken;
String? _errorMessage;
@override
void dispose() {
_tokenController.dispose();
super.dispose();
}
bool get _hasValidToken => isValidToken(_tokenController.text);
void _loadEmbeddedSearch() {
final token = _tokenController.text.trim();
if (token.isEmpty) {
setState(() => _errorMessage = 'Please enter a link token');
return;
}
if (!isValidToken(token)) {
setState(() => _errorMessage = 'Invalid token format');
return;
}
setState(() {
_activeToken = token;
_errorMessage = null;
_events.clear();
});
}
void _showResultSheet({
required String title,
required List<ResultRow> rows,
}) {
if (!mounted) {
return;
}
showModalBottomSheet<void>(
context: context,
isScrollControlled: true,
builder: (context) {
return ResultSheet(
title: title,
rows: rows,
events: List<LinkEvent>.of(_events),
onClose: () => Navigator.of(context).pop(),
);
},
);
}
@override
Widget build(BuildContext context) {
return ExampleDetailScaffold(
title: 'Plaid Embedded Search Example',
children: [
TokenInputView(
controller: _tokenController,
onChanged: () => setState(() {}),
),
const SizedBox(height: 20),
if (_errorMessage != null) ErrorView(message: _errorMessage!),
const SizedBox(height: 16),
SecondaryButton(
label: 'Load Embedded Search',
enabled: _hasValidToken,
onPressed: _loadEmbeddedSearch,
),
const SizedBox(height: 16),
if (_activeToken != null)
Container(
height: 420,
width: double.infinity,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(10),
border: Border.all(color: const Color(0xFFCCCCCC)),
),
child: PlaidEmbeddedSearchView(
token: _activeToken!,
onSuccess: (success) {
_showResultSheet(
title: 'Embedded Success',
rows: [
ResultRow('Public token', success.publicToken),
ResultRow(
'Link session ID',
success.metadata.linkSessionId,
),
],
);
},
onExit: (exit) {
_showResultSheet(
title: 'Embedded Exit',
rows: [
ResultRow('Status', exit.metadata.status?.value ?? ''),
ResultRow('Error code', exit.error?.errorCode ?? ''),
ResultRow('Error message', exit.error?.errorMessage ?? ''),
],
);
},
onEvent: (event) => setState(() => _events.add(event)),
),
),
],
);
}
}
class FinanceKitScreen extends StatefulWidget {
const FinanceKitScreen({super.key});
@override
State<FinanceKitScreen> createState() => _FinanceKitScreenState();
}
class _FinanceKitScreenState extends State<FinanceKitScreen> {
final TextEditingController _tokenController = TextEditingController();
FinanceKitSyncBehavior _syncBehavior = FinanceKitSyncBehavior.live;
SessionState _state = SessionState.idle;
String? _resultMessage;
@override
void dispose() {
_tokenController.dispose();
super.dispose();
}
bool get _hasValidToken => isValidToken(_tokenController.text);
Future<void> _sync() async {
final token = _tokenController.text.trim();
if (token.isEmpty) {
setState(() => _resultMessage = 'Please enter a link token');
return;
}
if (!isValidToken(token)) {
setState(() => _resultMessage = 'Invalid token format');
return;
}
setState(() {
_state = SessionState.loading;
_resultMessage = null;
});
try {
await syncFinanceKit(
FinanceKitConfiguration(token: token, syncBehavior: _syncBehavior),
);
setState(() {
_state = SessionState.ready;
_resultMessage = 'FinanceKit sync completed';
});
} catch (error) {
setState(() {
_state = SessionState.error;
_resultMessage = error.toString();
});
}
}
@override
Widget build(BuildContext context) {
final isLoading = _state == SessionState.loading;
return ExampleDetailScaffold(
title: 'Sync FinanceKit Example',
children: [
TokenInputView(
controller: _tokenController,
onChanged: () => setState(() {}),
),
const SizedBox(height: 16),
ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 400),
child: SegmentedButton<FinanceKitSyncBehavior>(
segments: const [
ButtonSegment(
value: FinanceKitSyncBehavior.live,
label: Text('Live'),
),
ButtonSegment(
value: FinanceKitSyncBehavior.simulated,
label: Text('Simulated'),
),
],
selected: {_syncBehavior},
onSelectionChanged: (values) {
setState(() => _syncBehavior = values.single);
},
),
),
const SizedBox(height: 16),
if (_resultMessage != null) ErrorView(message: _resultMessage!),
const SizedBox(height: 16),
SizedBox(
width: double.infinity,
child: FilledButton(
onPressed: _hasValidToken && !isLoading ? _sync : null,
style: FilledButton.styleFrom(
backgroundColor: const Color(0xFF007AFF),
disabledBackgroundColor: const Color(0xFFAAAAAA),
minimumSize: const Size.fromHeight(48),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
),
child:
isLoading
? const SizedBox(
width: 16,
height: 16,
child: CircularProgressIndicator(
strokeWidth: 2,
color: Colors.white,
),
)
: const Text(
'SYNC FINANCEKIT',
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w700,
),
),
),
),
],
);
}
}
class ExampleDetailScaffold extends StatelessWidget {
const ExampleDetailScaffold({
required this.title,
required this.children,
super.key,
});
final String title;
final List<Widget> children;
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFFEEEEEE),
body: SafeArea(
child: ListView(
children: [
Align(
alignment: Alignment.centerLeft,
child: TextButton.icon(
onPressed: () => Navigator.of(context).pop(),
icon: const Icon(Icons.arrow_back),
label: const Text('Back'),
),
),
Padding(
padding: const EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
title,
style: const TextStyle(
fontSize: 24,
fontWeight: FontWeight.w700,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 12),
FutureBuilder<String?>(
future: PlaidLink.sdkVersion,
builder: (context, snapshot) {
return Text(
'LinkKit ${snapshot.data ?? 'Loading...'}',
style: const TextStyle(
fontSize: 12,
color: Color(0xFF888888),
),
);
},
),
const SizedBox(height: 24),
...children,
],
),
),
],
),
),
);
}
}
class ExampleRow extends StatelessWidget {
const ExampleRow({
required this.title,
required this.description,
required this.onTap,
super.key,
});
final String title;
final String description;
final VoidCallback onTap;
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.fromLTRB(12, 0, 12, 12),
child: Material(
color: Colors.white,
borderRadius: BorderRadius.circular(10),
child: InkWell(
borderRadius: BorderRadius.circular(10),
onTap: onTap,
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
title,
style: const TextStyle(
fontSize: 17,
fontWeight: FontWeight.w600,
),
),
const SizedBox(height: 4),
Text(
description,
style: const TextStyle(
fontSize: 14,
color: Color(0xFF555555),
),
),
],
),
),
),
),
);
}
}
class TokenInputView extends StatelessWidget {
const TokenInputView({
required this.controller,
required this.onChanged,
super.key,
});
final TextEditingController controller;
final VoidCallback onChanged;
@override
Widget build(BuildContext context) {
final validationError =
controller.text.isEmpty || isValidToken(controller.text)
? null
: 'Invalid token format';
return ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 400),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Link token',
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w600,
color: Color(0xFF333333),
),
),
const SizedBox(height: 6),
TextField(
controller: controller,
onChanged: (_) => onChanged(),
autocorrect: false,
enableSuggestions: false,
decoration: InputDecoration(
hintText: 'link-sandbox-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
hintStyle: const TextStyle(color: Color(0xFF999999)),
filled: true,
fillColor: Colors.white,
contentPadding: const EdgeInsets.fromLTRB(10, 10, 44, 10),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
),
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
borderSide: BorderSide(
color:
validationError == null
? const Color(0xFFCCCCCC)
: const Color(0xFFFF3B30),
),
),
suffixIcon: IconButton(
icon: Icon(
controller.text.isEmpty ? Icons.content_paste : Icons.close,
),
onPressed: () async {
if (controller.text.isEmpty) {
final data = await Clipboard.getData(Clipboard.kTextPlain);
controller.text = data?.text?.trim() ?? '';
} else {
controller.clear();
}
onChanged();
},
),
),
),
if (validationError != null) ...[
const SizedBox(height: 4),
Text(
validationError,
style: const TextStyle(fontSize: 12, color: Color(0xFFFF3B30)),
),
],
],
),
);
}
}
class SmallTextInputView extends StatelessWidget {
const SmallTextInputView({
required this.label,
required this.hintText,
required this.controller,
super.key,
});
final String label;
final String hintText;
final TextEditingController controller;
@override
Widget build(BuildContext context) {
return ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 400),
child: TextField(
controller: controller,
autocorrect: false,
enableSuggestions: false,
decoration: InputDecoration(
labelText: label,
hintText: hintText,
filled: true,
fillColor: Colors.white,
border: OutlineInputBorder(borderRadius: BorderRadius.circular(8)),
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
borderSide: const BorderSide(color: Color(0xFFCCCCCC)),
),
),
),
);
}
}
class ErrorView extends StatelessWidget {
const ErrorView({required this.message, super.key});
final String message;
@override
Widget build(BuildContext context) {
return Container(
width: double.infinity,
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(12),
),
child: Column(
children: [
const Icon(Icons.warning_amber_rounded, size: 28),
const SizedBox(height: 8),
Text(
message,
style: const TextStyle(fontSize: 12, color: Color(0xFF888888)),
textAlign: TextAlign.center,
),
],
),
);
}
}
class ConnectButton extends StatelessWidget {
const ConnectButton({
required this.state,
required this.hasValidToken,
required this.onCreate,
required this.onOpen,
this.createLabel = 'Create Link Session',
this.openLabel = 'Connect Bank Account',
super.key,
});
final SessionState state;
final bool hasValidToken;
final VoidCallback onCreate;
final VoidCallback onOpen;
final String createLabel;
final String openLabel;
@override
Widget build(BuildContext context) {
final isLoading = state == SessionState.loading;
final isReady = state == SessionState.ready;
final isIdle = state == SessionState.idle || state == SessionState.error;
final isEnabled = (isIdle && hasValidToken) || isReady;
final title =
isLoading
? 'Initializing...'
: isIdle
? createLabel
: openLabel;
return SizedBox(
width: double.infinity,
child: FilledButton(
onPressed:
isEnabled && !isLoading ? (isReady ? onOpen : onCreate) : null,
style: FilledButton.styleFrom(
backgroundColor: const Color(0xFF007AFF),
disabledBackgroundColor: const Color(0xFFAAAAAA),
minimumSize: const Size.fromHeight(48),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
if (isLoading) ...[
const SizedBox(
width: 16,
height: 16,
child: CircularProgressIndicator(
strokeWidth: 2,
color: Colors.white,
),
),
const SizedBox(width: 8),
],
Text(
title.toUpperCase(),
style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w700),
),
],
),
),
);
}
}
class SecondaryButton extends StatelessWidget {
const SecondaryButton({
required this.label,
required this.enabled,
required this.onPressed,
super.key,
});
final String label;
final bool enabled;
final VoidCallback onPressed;
@override
Widget build(BuildContext context) {
return SizedBox(
width: double.infinity,
child: OutlinedButton(
onPressed: enabled ? onPressed : null,
style: OutlinedButton.styleFrom(
minimumSize: const Size.fromHeight(48),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
),
child: Text(
label.toUpperCase(),
style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w700),
),
),
);
}
}
class ResultSheet extends StatelessWidget {
const ResultSheet({
required this.title,
required this.rows,
required this.events,
required this.onClose,
super.key,
});
final String title;
final List<ResultRow> rows;
final List<LinkEvent> events;
final VoidCallback onClose;
@override
Widget build(BuildContext context) {
return SafeArea(
child: Padding(
padding: const EdgeInsets.all(20),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
title,
style: const TextStyle(fontSize: 24, fontWeight: FontWeight.w700),
),
const SizedBox(height: 16),
...rows.map((row) => ResultLine(row: row)),
const SizedBox(height: 12),
Text(
'Events: ${events.length}',
style: const TextStyle(fontSize: 14, color: Color(0xFF555555)),
),
const SizedBox(height: 20),
SizedBox(
width: double.infinity,
child: FilledButton(
onPressed: onClose,
child: const Text('Close'),
),
),
],
),
),
);
}
}
class ResultLine extends StatelessWidget {
const ResultLine({required this.row, super.key});
final ResultRow row;
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.only(bottom: 8),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
row.label,
style: const TextStyle(fontSize: 12, color: Color(0xFF888888)),
),
Text(
row.value.isEmpty ? '-' : row.value,
style: const TextStyle(fontSize: 14, color: Color(0xFF333333)),
),
],
),
);
}
}
class ResultRow {
const ResultRow(this.label, this.value);
final String label;
final String value;
}
enum SessionState { idle, loading, ready, error }
bool isValidToken(String token) {
return RegExp(r'^link-(sandbox|development|production)-').hasMatch(token);
}
String? emptyToNull(String value) {
final trimmed = value.trim();
return trimmed.isEmpty ? null : trimmed;
}
Map<String, String>? parseParams(String value) {
final trimmed = value.trim();
if (trimmed.isEmpty) {
return null;
}
final params = <String, String>{};
for (final entry in trimmed.split(',')) {
final parts = entry.split('=');
if (parts.length == 2) {
params[parts.first.trim()] = parts.last.trim();
}
}
return params.isEmpty ? null : params;
}Metadata
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points
100
downloads
Publisher
unverified uploader
Weekly Downloads
Metadata
Official Plaid Link SDK for Flutter. Securely connect users' financial accounts on iOS and Android with Link, Layer, Headless, and Embedded Search flows.
Repository (GitHub)
View/report issues
Topics
#plaid #banking #fintech #payments
License
unknown (license)
Dependencies
flutter, plugin_platform_interface
More
Packages that depend on plaid_link_flutter
Packages that implement plaid_link_flutter