在一定时间间隔后每隔一段时间挑选地理定位

Question

Dart-flutter的新手，我需要编写一个应用程序，每隔一小时就可以在后台选择用户位置。 我试图在地理定位插件和Timer类周围工作，它工作正常，但只选择一次位置 我需要知道是否有服务工作或最佳方式来解决这个问题 谢谢

class HomePage extends StatefulWidget{
   static const timeout = const Duration(seconds: 5);

   @override
   State createState() => new HomePageState();

   HomePage(){
     startTimeout();
   }

   startTimeout()async {
    final GeolocationResult result = await 
      Geolocation.isLocationOperational();
      if(result.isSuccessful) {
      return new Timer(timeout, handleTimeout);
    } 
     else {
       debugPrint(result.error.toString());
       GeolocationResult res = await 
       Geolocation.requestLocationPermission(const LocationPermission(
       android: LocationPermissionAndroid.fine,
       ios: LocationPermissionIOS.always,
       ));

        if(res.isSuccessful) {
           new Timer.periodic(timeout,(Timer t)=> handleTimeout);
        } else {
         debugPrint(res.error.toString());
        }
     }
  }

 void handleTimeout(){
      debugPrint("Print after 10 seconds");
        Geolocation.currentLocation(accuracy: 
          LocationAccuracy.best).listen((result) {
        if(result.isSuccessful) {
            var posts = new postservice.Post();
            var userid=100;



posts.sendLocation(result.location.latitude,result.location.longitude,userid);

         }
    });
   }
 }