screen_launcher 0.1.3

A lightweight, router-agnostic developer/QA tool that lists every screen in your app in a searchable list, with an optional draggable overlay bubble, so you can launch any route on demand.

screen_launcher

A lightweight, router-agnostic developer & QA tool for Flutter.

It shows a searchable list of every screen in your app so you can jump straight to any route — no more clicking through five screens to reach a deep page. You bring the list of screens and tell it how to navigate; it does the rest.

• Zero third-party dependencies (Flutter SDK only).
• Works with any navigation: Navigator, go_router, GetX, auto_route, …
• Optional floating, draggable bubble to open the launcher from anywhere.

---

Install

Add it to your pubspec.yaml:

dependencies:
  screen_launcher: ^0.1.3

Then fetch packages:

flutter pub get

Import it:

import 'package:screen_launcher/screen_launcher.dart';

---

Quick start (3 steps)

1. List the screens you want to launch

name is the only required field — it's the identifier passed back to you when a row is tapped (usually your route name). Everything else is optional.

const launcherScreens = [
  LaunchableScreen(name: '/home', title: 'Home', group: 'Core'),
  LaunchableScreen(name: '/profile', title: 'Profile', group: 'Core'),
  LaunchableScreen(name: '/settings', title: 'Settings', group: 'System'),
];

2. Show the launcher

Pick whichever fits your app:

// Open it on demand (e.g. from a debug button)
ScreenLauncher.open(
  context,
  screens: launcherScreens,
  onLaunch: _launch,
);

// Or embed the widget anywhere in your own layout
ScreenLauncher(
  screens: launcherScreens,
  onLaunch: _launch,
);

3. Tell it how to navigate

This is the only part that depends on your app. The launcher never navigates for you — it just calls onLaunch with the tapped screen:

void _launch(BuildContext context, LaunchableScreen screen) {
  Navigator.of(context).pushNamed(screen.name, arguments: screen.arguments);
}

That's it.

---

Use it with your router

Just change the body of onLaunch:

// Navigator (named routes)
onLaunch: (context, screen) =>
    Navigator.of(context).pushNamed(screen.name, arguments: screen.arguments),

// go_router
onLaunch: (context, screen) => context.push(screen.name, extra: screen.arguments),

// GetX
onLaunch: (context, screen) => Get.toNamed(screen.name, arguments: screen.arguments),

// auto_route
onLaunch: (context, screen) => context.router.pushNamed(screen.name),

---

Floating draggable bubble

Insert a draggable bubble into the app's root Overlay. Tapping it opens the launcher. Add it once from a screen that has an Overlay ancestor (a post-frame callback in initState is the easiest place):

class _HomePageState extends State<HomePage> {
  DraggyBubbleHandle? _bubble;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _bubble = ScreenLauncher.showBubble(
        context,
        screens: launcherScreens,
        groupByCategory: true,
        onLaunch: (context, screen) {
          Navigator.of(context).pop(); // close the launcher first
          Navigator.of(context).pushNamed(screen.name);
        },
      );
    });
  }

  @override
  void dispose() {
    _bubble?.remove(); // remove the bubble when no longer needed
    super.dispose();
  }
}

Bubble options: icon (defaults to Icons.rocket_launch), backgroundColor (defaults to Color(0xFFFF9800)), foregroundColor (defaults to Colors.white), size, opacity, initialOffset — plus all the launcher options below.

For a fully custom overlay action, use the lower-level helper:

showDraggyBubble(context, onTap: () => debugPrint('Open any dev tool here'));

---

Options

Passed to ScreenLauncher, ScreenLauncher.open(...) and ScreenLauncher.showBubble(...):

Option	Default	Description
screens	—	The list of screens to show. Required.
onLaunch	—	Called when a row is tapped. Required.
title	'Screen Launcher'	Header / app bar title.
searchHint	'Search screens'	Placeholder text for the search field.
caseSensitive	false	Whether search is case sensitive.
groupByCategory	false	Group rows under LaunchableScreen.group.
theme	null	Visual overrides (see below).

ScreenLauncher (the widget) also supports showAppBar, emptyBuilder, and tileBuilder for deeper customization.

Theming

ScreenLauncher(
  screens: launcherScreens,
  title: 'Dev Menu',
  theme: const ScreenLauncherTheme(
    trailingIcon: Icons.arrow_forward_ios,
  ),
  onLaunch: _launch,
);

Every ScreenLauncherTheme field is optional and falls back to the ambient Theme.of(context), so it blends into your app by default.

---

Heads-up for production

The launcher opens routes directly and does not synthesize required arguments. Screens that depend on arguments, query params, or prior state may open incomplete. It's meant for development/QA — gate it behind a debug flag:

if (kDebugMode) {
  ScreenLauncher.showBubble(context, screens: launcherScreens, onLaunch: _launch);
}

---

See the example directory for a complete, runnable app.

License

MIT — see LICENSE.