在后台运行 dart 代码，即使我的应用已关闭

Question

在 Flutter 中，我使用 adhara_socket_io 打开套接字并从我的服务器接收数据以使用 flutter_local_notifications 推送通知，它在应用程序运行时工作，现在我需要在后台运行，所以当我的应用程序不运行时，它仍然从我的服务器接收数据并推送通知， 在颤振中这样做有什么办法吗？

void initSocket() async {
final deviceInfo = await Constants.getDeviceDetails();
final String deviceId = deviceInfo[2];
Uuid uuid = Uuid();
print(deviceInfo);
final id = uuid.v5(Uuid.NAMESPACE_URL, deviceId);
print('id ' + id);
SocketIOManager manager = SocketIOManager();
SocketIO socket = await manager.createInstance(
SocketOptions(URI,
enableLogging: false,
transports: [Transports.WEB_SOCKET /*, Transports.POLLING*/]),
);
socket.onConnect((data) {
print("connected...");
print(data);
socket.emit('settings', [
{'device_id': id}
]);
});
socket.onConnectError((_) => print('connect error'));
socket.onConnectTimeout((_) => print('timeout'));
socket.onError((_) => print('error'));
socket.onDisconnect((_) => print('disconnect'));
socket.on('notif', (data) {
print('notif');
_showNotificationWithDefaultSound(data['heading'],data['content']);
});
socket.connect();
}
initNotifications() {
var initializationSettingsAndroid = AndroidInitializationSettings('@mipmap/ic_launcher');
var initializationSettingsIOS = IOSInitializationSettings();
var initializationSettings = InitializationSettings(initializationSettingsAndroid,initializationSettingsIOS);
flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
flutterLocalNotificationsPlugin.initialize(initializationSettings,onSelectNotification: onSelectNotification);
}
Future onSelectNotification(String payload)async{
print('payload');
}
Future _showNotificationWithDefaultSound(heading,content) async {
var androidPlatformChannelSpecifics = new AndroidNotificationDetails(
'your channel id', 'your channel name', 'your channel description',
importance: Importance.Max, priority: Priority.High);
var iOSPlatformChannelSpecifics = new IOSNotificationDetails();
var platformChannelSpecifics = new NotificationDetails(
androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.show(
0,
heading,
content,
platformChannelSpecifics,
payload: 'Default_Sound',
);
}

Answer 1

https://medium.com/vrt-digital-studio/flutter-workmanager-81e0cfbd6f6e
希望这会有所帮助，或者您可以使用 FCM https://fireship.io/lessons/flutter-push-notifications-fcm-guide/

但是我是乞丐，我不知道太多..抱歉，如果这对您没有帮助。