小编Sal*_*iff的帖子

我想知道如何在 Flutterwebview应用程序中启动 WhatsApp 或从 Flutter 中的浏览器启动 WhatsApp，使用了许多代码，没有错误，但它们不起作用。我使用 mac m1 和 vscode

import 'package:coinpaga/Connectivity_Provider.dart';
import 'package:coinpaga/services/local_notification_service.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'homepage.dart';
import 'package:hexcolor/hexcolor.dart';
import 'package:colorful_safe_area/colorful_safe_area.dart';

///  Receive message when app is in background solution for on 
message
Future<void> backgroundHandler(RemoteMessage message)async{
  print(message.data.toString());
  print(message.notification!.title);
}
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  LocalNotificationServices.initialize();
  await Firebase.initializeApp();
  FirebaseMessaging.onBackgroundMessage(backgroundHandler);
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
  Widget build(BuildContext context) {
return MultiProvider(
  providers: [
    ChangeNotifierProvider(
      create: (context) => ConnectivityProvider(),
      child: …