back_button_interceptor 4.0.4

Back Button Interceptor. May be used to do stuff when the Android back-button is tapped, as an alternative to `WillPopScope`.

example/main.dart

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

void main() async => runApp(MaterialApp(home: Demo()));

class Demo extends StatefulWidget {
  @override
  DemoState createState() => new DemoState();
}

class DemoState extends State<Demo> {
  //
  @override
  void initState() {
    super.initState();
    BackButtonInterceptor.add(myInterceptor);
  }

  @override
  void dispose() {
    BackButtonInterceptor.remove(myInterceptor);
    super.dispose();
  }

  bool myInterceptor(bool stopDefaultButtonEvent) {
    print("BACK BUTTON!"); // Do some stuff.
    return true;
  }

  @override
  Widget build(BuildContext context) {
    //
    return Scaffold(
      appBar: AppBar(title: const Text('Back Button Interceptor Example')),
      body: Container(color: Colors.green),
    );
  }
}