flutter_notification_listener 1.0.6

Flutter Plugin to listen to all incoming notifications for Android.

example/lib/main.dart

import 'dart:isolate';
import 'dart:ui';

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

import 'package:flutter_notification_listener/flutter_notification_listener.dart';

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

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

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: NotificationsLog(),
    );
  }
}

class NotificationsLog extends StatefulWidget {
  @override
  _NotificationsLogState createState() => _NotificationsLogState();
}

class _NotificationsLogState extends State<NotificationsLog> {
  List<NotificationEvent> _log = [];
  bool started = false;
  bool _loading = false;

  ReceivePort port = ReceivePort();

  @override
  void initState() {
    initPlatformState();
    super.initState();
  }

  // we must use static method, to handle in background
  static void _callback(NotificationEvent evt) {
    print("send evt to ui: $evt");
    final SendPort send = IsolateNameServer.lookupPortByName("_listener_");
    if (send == null) print("can't find the sender");
    send?.send(evt);
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    NotificationsListener.initialize(callbackHandle: _callback);

    // this can fix restart<debug> can't handle error
    IsolateNameServer.removePortNameMapping("_listener_");
    IsolateNameServer.registerPortWithName(port.sendPort, "_listener_");
    port.listen((message) => onData(message));

    // don't use the default receivePort
    // NotificationsListener.receivePort.listen((evt) => onData(evt));

    var isR = await NotificationsListener.isRunning;
    print("""Service is ${!isR ? "not " : ""}aleary running""");

    setState(() {
      started = isR;
    });
  }

  void onData(NotificationEvent event) {
    setState(() {
      _log.add(event);
    });
    print(event.toString());
  }

  void startListening() async {
    print("start listening");
    setState(() {
      _loading = true;
    });
    var hasPermission = await NotificationsListener.hasPermission;
    if (!hasPermission) {
      print("no permission, so open settings");
      NotificationsListener.openPermissionSettings();
      return;
    }

    var isR = await NotificationsListener.isRunning;

    if (!isR) {
      await NotificationsListener.startService();
    }

    setState(() {
      started = true;
      _loading = false;
    });
  }

  void stopListening() async {
    print("stop listening");

    setState(() {
      _loading = true;
    });

    await NotificationsListener.stopService();

    setState(() {
      started = false;
      _loading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Notifications Listener Example'),
      ),
      body: Center(
          child: ListView.builder(
              itemCount: _log.length,
              reverse: true,
              itemBuilder: (BuildContext context, int idx) {
                final entry = _log[idx];
                return ListTile(
                    trailing:
                        Text(entry.packageName.toString().split('.').last),
                    title: Container(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(entry.title ?? "<<no title>>"),
                          Text(entry.createAt.toString().substring(0, 19)),
                        ],
                      ),
                    ));
              })),
      floatingActionButton: FloatingActionButton(
        onPressed: started ? stopListening : startListening,
        tooltip: 'Start/Stop sensing',
        child: _loading
            ? Icon(Icons.close)
            : (started ? Icon(Icons.stop) : Icon(Icons.play_arrow)),
      ),
    );
  }
}