tap2exit 1.1.0

A Flutter plugin providing double-tap-to-exit functionality for Android with native Toast support and safe iOS handling.

tap2exit

A Flutter plugin providing double-tap-to-exit functionality for Android with native Toast support and safe iOS handling.

Features

• 🔙 Intercepts back button presses — shows a message on the first press, exits on the second.
• ⏱️ Configurable time window for the double-tap detection.
• 💬 SnackBar message by default — fully customisable style.
• 📱 Optional native Android Toast via a simple boolean flag.
• 🍎 Safe no-op on iOS — no app rejection risk.
• 🎯 Exit callback for cleanup before the app closes.
• 📦 Zero external dependencies.

Installation

Add tap2exit to your pubspec.yaml:

dependencies:
  tap2exit: ^1.1.0

Then run:

flutter pub get

Quick Start

Wrap your top-level page widget with Tap2Exit:

import 'package:tap2exit/tap2exit.dart';

@override
Widget build(BuildContext context) {
  return Tap2Exit(
    child: Scaffold(
      appBar: AppBar(title: const Text('My App')),
      body: const Center(child: Text('Hello!')),
    ),
  );
}

Parameters

Parameter	Type	Default	Description
child	Widget	required	The widget to wrap.
message	String	'Press back again to exit'	Message shown on the first back press.
duration	Duration	Duration(seconds: 2)	Time window for the second press to trigger exit.
useToast	bool	false	Use native Android Toast instead of SnackBar.
onExit	VoidCallback?	null	Callback invoked just before the app exits.
onFirstBackPress	VoidCallback?	null	Callback invoked on the first back press.
snackBarStyle	Tap2ExitSnackBarStyle?	null	Customise SnackBar appearance.

Advanced Usage

Custom SnackBar Styling

Tap2Exit(
  snackBarStyle: Tap2ExitSnackBarStyle(
    backgroundColor: Colors.black87,
    textStyle: const TextStyle(color: Colors.white, fontSize: 16),
    behavior: SnackBarBehavior.floating,
    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
    margin: const EdgeInsets.all(16),
  ),
  child: MyHomePage(),
)

Native Toast on Android

Tap2Exit(
  useToast: true,
  child: MyHomePage(),
)

Exit Callback

Tap2Exit(
  onExit: () async {
    await saveUserData();
    debugPrint('Goodbye!');
  },
  child: MyHomePage(),
)

Platform Behaviour

Platform	exitApp	showToast
Android	Activity.finishAffinity()	Native Toast.makeText()
iOS	No-op (not allowed by Apple)	No-op (falls back to SnackBar in Flutter)

Example

A fully working example app is included in the example/ directory. Run it with:

cd example
flutter run

License

MIT — see LICENSE for details.