firebase_update 1.0.2

Flutter force update, maintenance mode & patch notes via Firebase Remote Config. Real-time, server-controlled, with built-in UI and full customization.

firebase_update

Control your app's update story from Firebase — without shipping a new build.

One package to handle forced updates, optional updates, maintenance mode, and patch notes — with built-in UI, real-time Remote Config listening, and full customization hooks.

Full documentation → qoder.in/resources/firebase-update

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Why firebase_update?

Most Flutter update packages scrape the App Store listing or wrap a platform API — they tell you what version is available, but they can't tell your app what to do about it in real time.

	firebase_update	upgrader	in_app_update	new_version_plus
Server-side update control	✅	✗	✗	✗
Maintenance / kill switch	✅	✗	✗	✗
Real-time propagation (no restart)	✅	✗	✗	✗
Patch notes alongside prompt	✅	✗	✗	✗
Fully custom UI builders	✅	partial	✗	✗
iOS + Android	✅	✅	Android only	✅
Works without store listing	✅	✗	✗	✗

You already have Firebase. Now get update control for free.

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Features

• Force update — blocks app usage when a breaking release is required
• Optional update — encourages upgrade via a dismissible dialog or bottom sheet
• Maintenance mode — instantly gates the app without shipping a build
• Patch notes — plain text or HTML, shown inline in the update UI
• Real-time updates — reacts to Remote Config changes without an app restart
• Built-in UI — default dialog and bottom sheet, no setup beyond a navigatorKey
• Custom UI — replace any surface with your own widget builders
• FirebaseUpdateBuilder — reactive widget for building your own in-screen update surfaces

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Installation

dependencies:
  firebase_update: ^1.0.0

This package requires Firebase to already be set up in your app. If you haven't done that yet, follow the FlutterFire setup guide.

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Quick Start

1. Initialize

Call initialize() once during app bootstrap, after Firebase.initializeApp():

import 'package:firebase_update/firebase_update.dart';

final navigatorKey = GlobalKey<NavigatorState>();

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

  await FirebaseUpdate.instance.initialize(
    navigatorKey: navigatorKey,
    config: const FirebaseUpdateConfig(),
  );

  runApp(MyApp(navigatorKey: navigatorKey));
}

Pass the same navigatorKey to your MaterialApp:

MaterialApp(
  navigatorKey: navigatorKey,
  home: const HomeScreen(),
)

That's it. The package now listens for Remote Config changes and automatically presents the appropriate UI when an update or maintenance state is detected.

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Remote Config Schema

Create a parameter named firebase_update_config in the Firebase console (or use a custom name via remoteConfigKey). Its value must be a JSON string:

{
  "min_version": "2.0.0",
  "latest_version": "2.3.1",
  "maintenance_message": "",
  "patch_notes": "• Bug fixes\n• Performance improvements",
  "patch_notes_format": "text"
}

Field	Type	Description
min_version	string	Minimum supported version. Below this → force update (blocking).
latest_version	string	Latest available version. Below this → optional update.
maintenance_title	string	Title shown on the maintenance screen.
maintenance_message	string	Non-empty string activates maintenance mode (blocking).
force_update_title	string	Override title for the force update screen.
force_update_message	string	Override body for the force update screen.
optional_update_title	string	Override title for the optional update prompt.
optional_update_message	string	Override body for the optional update prompt.
patch_notes	string	Release notes shown alongside the update prompt.
patch_notes_format	string	"text" (default) or "html".

Priority: maintenance (if maintenance_message is non-empty) → force update (if current < min_version) → optional update (if current < latest_version). Only one surface is shown at a time; the package dismisses the previous modal before showing a new one.

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Update States

FirebaseUpdateState.kind is one of:

Kind	Meaning
idle	Not yet initialized.
upToDate	App version meets the minimum requirement.
optionalUpdate	A newer version is available, but the app is usable.
forceUpdate	App version is below the minimum. Usage is blocked.
maintenance	Maintenance mode is active. Usage is blocked.

state.isBlocking is true for forceUpdate and maintenance.

---

Configuration

FirebaseUpdateConfig(
  // remoteConfigKey defaults to 'firebase_update_config'

  currentVersion: '2.1.0',              // Override auto-detected version
  packageName: 'com.example.app',        // Override auto-detected package name
  fetchTimeout: Duration(seconds: 60),
  minimumFetchInterval: Duration(hours: 12),
  listenToRealtimeUpdates: true,         // React to RC changes without restart
  enableDefaultPresentation: true,       // Set false to fully own the UI
  useBottomSheetForOptionalUpdate: true, // false = dialog instead
  fallbackStoreUrls: FirebaseUpdateStoreUrls(
    android: 'https://play.google.com/store/apps/details?id=com.example.app',
    ios: 'https://apps.apple.com/app/id000000000',
  ),
  presentation: FirebaseUpdatePresentation(...), // Theme / alignment / icon
)

---

Custom UI

Override any surface directly on FirebaseUpdateConfig — replace one, two, or all three independently:

// Just override maintenance — everything else stays default
FirebaseUpdateConfig(
  maintenanceWidget: (context, data) => MyMaintenanceScreen(data: data),
)

// Mix and match
FirebaseUpdateConfig(
  forceUpdateWidget: (context, data) => MyForceUpdateDialog(data: data),
  optionalUpdateWidget: (context, data) => MyUpdateSheet(data: data),
  maintenanceWidget: (context, data) => MyMaintenanceScreen(data: data),
)

Each builder receives FirebaseUpdatePresentationData with the resolved title, state, primary/secondary action labels, and tap callbacks wired to the correct package behavior — your widget doesn't need to re-implement any of that logic.

For optionalUpdateWidget, the modal type (dialog vs bottom sheet) is still controlled by useBottomSheetForOptionalUpdate — your widget is the content regardless of which container is used.

Theming the default UI

FirebaseUpdatePresentation(
  theme: FirebaseUpdatePresentationTheme(
    accentColor: Colors.indigo,
    accentForegroundColor: Colors.white,
    surfaceColor: Colors.white,
    heroGradient: LinearGradient(
      colors: [Colors.indigo.shade800, Colors.indigo.shade400],
    ),
    dialogBorderRadius: BorderRadius.circular(24),
  ),
)

---

Reactive Widget

Use FirebaseUpdateBuilder to build your own in-screen update surfaces — a settings row, a banner, or anything else that should react to update state:

FirebaseUpdateBuilder(
  builder: (context, state) {
    if (state.kind == FirebaseUpdateKind.optionalUpdate) {
      return UpdateBanner(version: state.latestVersion);
    }
    return const SizedBox.shrink();
  },
)

---

API Reference

// Initialize once at app startup
await FirebaseUpdate.instance.initialize(
  navigatorKey: navigatorKey,
  config: config,
);

// Force an immediate Remote Config fetch and re-evaluate state
await FirebaseUpdate.instance.checkNow();

// Current state (synchronous)
FirebaseUpdateState state = FirebaseUpdate.instance.currentState;

// Reactive stream of state changes
Stream<FirebaseUpdateState> stream = FirebaseUpdate.instance.stream;

// Apply a raw payload manually (useful for testing or custom sources)
await FirebaseUpdate.instance.applyPayload({'min_version': '2.0.0', ...});

---

Testing

Unit + widget tests

flutter test

Real Remote Config integration (requires service account)

A Dart CLI tool in test/firebase_config/ pushes predefined scenarios directly to Firebase Remote Config, leaving all other parameters untouched. The running app reacts in real time via onConfigUpdated.

cd test/firebase_config

# One-time dependency install
dart pub get

# Push a scenario
dart run update_remote_config.dart optional     # optional update bottom sheet / dialog
dart run update_remote_config.dart force        # force update (blocking)
dart run update_remote_config.dart maintenance  # maintenance mode (blocking)
dart run update_remote_config.dart clear        # back to up-to-date

# Custom Remote Config key
dart run update_remote_config.dart optional --key my_update_key

Requires test/firebase_config/service-account.json with firebaseremoteconfig write permissions.

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Keywords

flutter force update · flutter maintenance mode · flutter in-app update · firebase remote config update · flutter app update prompt · flutter update dialog · flutter update wall · flutter app gate · real-time update control · no-code update control

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License

BSD-3-Clause © Qoder