Flutter Integration Patterns

import 'package:encore_flutter/encore_flutter.dart';

Future<void> onCancelTapped(BuildContext context) async {
  final result = await Encore.shared.placement('cancel_flow').show();

  switch (result) {
    case EncorePresentationResultGranted(:final offerId):
      // User accepted
      Navigator.of(context).pushReplacementNamed('/home');
      break;
    case EncorePresentationResultNotGranted(:final reason):
      // User declined or no offers — proceed with original flow
      await proceedWithCancellation(reason);
      break;
  }

  // Code that runs in both branches lives here, written once
  analytics.track('cancel_flow_resolved');
}

FilledButton(
  onPressed: () async {
    final result = await Encore.shared.placement('cancel_flow').show();
    if (result is EncorePresentationResultGranted) {
      if (context.mounted) Navigator.of(context).pop();
    } else {
      await proceedWithCancellation();
    }
  },
  child: const Text('Cancel Subscription'),
)

sealed class EncorePresentationResult {}

class EncorePresentationResultGranted extends EncorePresentationResult {
  final String? offerId;
  final String? campaignId;
}

class EncorePresentationResultNotGranted extends EncorePresentationResult {
  final String reason;
}

import 'package:encore_flutter/encore_flutter.dart';
import 'package:flutter/material.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await Encore.configure(apiKey: 'pk_live_...');

  Encore.shared.setOnPurchaseRequest((request) async {
    // Route to RevenueCat / in_app_purchase / your billing
    await billing.purchase(request.productId);
  });

  Encore.shared.setOnPassthrough((placementId) {
    AppRouter.handlePassthrough(placementId);
  });

  runApp(const MyApp());
}

ElevatedButton(
  onPressed: () => unawaited(Encore.placement('cancel_flow').show()),
  child: const Text('Cancel Subscription'),
)

Encore.shared.setOnPurchaseRequest((_) async { /* v1 */ });
Encore.shared.setOnPurchaseRequest((_) async { /* v2 — replaces v1 */ });