flutter无痕埋点

import 'package:firebase_analytics/firebase_analytics.dart';
import 'package:firebase_analytics/observer.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(),
      navigatorObservers: [
        FirebaseAnalyticsObserver(analytics: FirebaseAnalytics()),
      ],
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  void initState() {
    super.initState();
    FirebaseAnalytics().logAppOpen();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My App'),
      ),
      body: Center(
        child: FlatButton(
          onPressed: () {
            FirebaseAnalytics().logEvent(name: 'button_click');
          },
          child: Text('Click me'),
        ),
      ),
    );
  }
}