flutter_fgbg 0.3.0

Flutter plugin to detect when app(not Flutter container) goes to background or foreground

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_fgbg/flutter_fgbg.dart';
import 'package:local_auth/local_auth.dart';
import 'package:image_picker/image_picker.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with WidgetsBindingObserver {
  final picker = ImagePicker();

  List<String> events = [];

  void didChangeAppLifecycleState(AppLifecycleState state) {
    events.add(state.toString());
    setState(() {});
  }

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  Widget build(BuildContext context) {
    return FGBGNotifier(
      onEvent: (event) {
        events.add(event.toString());
        setState(() {});
      },
      child: MaterialApp(
        home: Scaffold(
          body: SafeArea(
            child: Padding(
              padding: const EdgeInsets.all(16.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: <Widget>[
                  ElevatedButton(
                    onPressed: () {
                      events.clear();
                      setState(() {});
                    },
                    child: Text("Clear logs"),
                  ),
                  ElevatedButton(
                    onPressed: () async {
                      events.add("// Opening camera");
                      setState(() {});
                      await picker.pickImage(source: ImageSource.camera);
                    },
                    child: Text("Take Image"),
                  ),
                  ElevatedButton(
                    onPressed: () async {
                      events.add("// Opening gallery");
                      setState(() {});
                      await picker.pickImage(source: ImageSource.gallery);
                    },
                    child: Text("Pick Image"),
                  ),
                  ElevatedButton(
                    onPressed: () async {
                      events.add(
                          "// Opening camera but ignoring events during this");
                      setState(() {});
                      FGBGEvents.ignoreWhile(() async {
                        await picker.pickImage(source: ImageSource.camera);
                      });
                    },
                    child: Text("Take Image ignoreWhile"),
                  ),
                  ElevatedButton(
                    onPressed: () async {
                      events.add(
                          "// Opening gallery but ignoring events during this");
                      setState(() {});

                      FGBGEvents.ignoreWhile(() async {
                        await picker.pickImage(source: ImageSource.gallery);
                      });
                    },
                    child: Text("Pick Image ignoreWhile"),
                  ),
                  ElevatedButton(
                    onPressed: () async {
                      events.add("// Prompting biometric");
                      setState(() {});
                      var auth = LocalAuthentication();

                      await auth.authenticate(
                        // biometricOnly: true,
                        options: AuthenticationOptions(
                          biometricOnly: true,
                        ),
                        localizedReason: 'Test',
                      );
                    },
                    child: Text("FaceID"),
                  ),
                  SizedBox(height: 16),
                  Expanded(
                    child: ListView(
                      children: [for (var e in events) Text(e)],
                    ),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}