Flutter background services while uploading file to api ,I want to update the progress using streamcontroller to update the UI, But it's not working.how can we achieve this ?

[ramaatamai]

No description provided.

[ayoub00400]

exmaple :
// service side :

progressStream.listen((value) {
data.addAll(value);
double progressPercentage = (data.length * 100) / contentLength;

//this line solve your progress refresh in ui :
service.invoke('refresh', {"0": progressPercentage});
_showProgressNotification(service, progressPercentage, productData['productName']);
}).onDone(() async {
var fileStorePath = "/storage/emulated/0/erp/";
var storeDir = Directory(fileStorePath);
if (!storeDir.existsSync()) {
storeDir.createSync(recursive: true);
}

    final file = File(
      '$fileStorePath/${productData['productName']}${mimeToExtension[response.headers['content-type']]}',
    );
    await file.writeAsBytes(data, mode: FileMode.write);

    await Future.delayed(
      const Duration(seconds: 1),
      () {
        service.stopSelf();
      },
    );
  });

//Logic side :

// this line to listen to progress value in ui :
FileDownloaderService.flutterBgInstance.on('refresh')
..listen((event) {
if (event!['0'] == 100) {
emit(ProductDownloaded(message: "DownLoad FInished"));
} else {
emit(ProductDownLoading(productId: productData.id, progress: (event['0'] as double).toInt()));
}
});

i hope you find this helpful

[ramaatamai]

@ayoub00400 final service = FlutterBackgroundService();
FlutterBackgroundService().invoke("setAsBackground");

Future.delayed(Duration(seconds: 2), () async {
  service.startService();
service.invoke('startTaskWithJson', json);
});

When i tried to start the service ,I am facing "Service already running, using existing service" Issue and its not invoke service.invoke('startTaskWithJson', json