journiq_flutter_sdk 0.1.2

Journiq deep linking, attribution, and analytics SDK for Flutter. Wraps native Android and iOS SDKs via platform channels.

example/lib/main.dart

import 'dart:async';

import 'package:app_links/app_links.dart';
import 'package:flutter/material.dart';
import 'package:journiq_flutter_sdk/journiq_flutter_sdk.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Journiq.configure(apiKey: 'jq_pub_example_key');
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Journiq SDK Example',
      theme: ThemeData(colorSchemeSeed: Colors.indigo, useMaterial3: true),
      home: const HomePage(),
    );
  }
}

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

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  final _appLinks = AppLinks();
  StreamSubscription<Uri>? _linkSub;

  String _status = 'Initializing...';
  String? _deepLinkPath;
  String? _attributedLinkId;
  final List<String> _events = [];

  @override
  void initState() {
    super.initState();
    _init();
  }

  @override
  void dispose() {
    _linkSub?.cancel();
    super.dispose();
  }

  Future<void> _init() async {
    // 1. Check for deferred deep link (first install attribution)
    final match = await Journiq.deepLinks.checkDeferredDeepLink();
    if (match.matched) {
      setState(() {
        _status = 'Deferred link matched!';
        _deepLinkPath = match.deepLinkPath;
        _attributedLinkId = Journiq.attributedDeepLinkId;
      });
    } else {
      setState(() => _status = 'No deferred link');
    }

    // 2. Listen for incoming URL scheme links
    // Handle link that launched the app (cold start)
    final initialUri = await _appLinks.getInitialLink();
    if (initialUri != null) _handleIncomingLink(initialUri);

    // Handle links while app is running (warm start)
    _linkSub = _appLinks.uriLinkStream.listen(_handleIncomingLink);
  }

  void _handleIncomingLink(Uri uri) {
    // Extract attribution (jq_link, jq_click) and get clean URI
    final cleanUri = Journiq.deepLinks.handleIncomingLink(uri);

    setState(() {
      _status = 'Deep link received!';
      _deepLinkPath = cleanUri.path.replaceFirst('/', '');
      _attributedLinkId = Journiq.attributedDeepLinkId;
    });
  }

  Future<void> _trackPurchase() async {
    // deepLinkId is automatically attached from attribution
    await Journiq.events.track(
      'PURCHASE',
      metadata: {'amount': '29.99', 'currency': 'USD'},
    );
    setState(() {
      _events.add(
        'PURCHASE (attributed to: ${Journiq.attributedDeepLinkId ?? "none"})',
      );
    });
  }

  Future<void> _trackSignUp() async {
    await Journiq.events.track('SIGN_UP');
    setState(() {
      _events.add(
        'SIGN_UP (attributed to: ${Journiq.attributedDeepLinkId ?? "none"})',
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Journiq SDK Example')),
      body: ListView(
        padding: const EdgeInsets.all(16),
        children: [
          // Status card
          Card(
            child: Padding(
              padding: const EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    'Status',
                    style: Theme.of(context).textTheme.titleMedium,
                  ),
                  const SizedBox(height: 8),
                  Text(_status),
                  if (_deepLinkPath != null) ...[
                    const SizedBox(height: 4),
                    Text(
                      'Path: $_deepLinkPath',
                      style: const TextStyle(fontFamily: 'monospace'),
                    ),
                  ],
                  if (_attributedLinkId != null) ...[
                    const SizedBox(height: 4),
                    Text(
                      'Attributed Link ID: $_attributedLinkId',
                      style: const TextStyle(
                        fontFamily: 'monospace',
                        fontSize: 12,
                      ),
                    ),
                  ],
                ],
              ),
            ),
          ),
          const SizedBox(height: 16),

          // Actions
          Text('Track Events', style: Theme.of(context).textTheme.titleMedium),
          const SizedBox(height: 8),
          Row(
            children: [
              Expanded(
                child: FilledButton(
                  onPressed: _trackPurchase,
                  child: const Text('Purchase'),
                ),
              ),
              const SizedBox(width: 8),
              Expanded(
                child: OutlinedButton(
                  onPressed: _trackSignUp,
                  child: const Text('Sign Up'),
                ),
              ),
            ],
          ),
          const SizedBox(height: 16),

          // Event log
          if (_events.isNotEmpty) ...[
            Text('Event Log', style: Theme.of(context).textTheme.titleMedium),
            const SizedBox(height: 8),
            ..._events.reversed.map(
              (e) => Padding(
                padding: const EdgeInsets.only(bottom: 4),
                child: Text(
                  '• $e',
                  style: const TextStyle(fontFamily: 'monospace', fontSize: 12),
                ),
              ),
            ),
          ],
        ],
      ),
    );
  }
}