Flutter : Downloading multiple files

Jaimin Modi 0
Viewed 35

I have used Dio package to download a file as below :

Future<void> downloadFile() async {
// requests permission for downloading the file
bool hasPermission = await _requestWritePermission();
if (!hasPermission) return;

Dio dio = Dio();
try {
  var dir = await getApplicationDocumentsDirectory();
  await dio.download(uri, "${dir.path}/eng_json.json",
      onReceiveProgress: (rec, total) {
    print("Path >>> " + "${dir.path}/eng_json.json");
    setState(() {
      downloading = true;
    });
  });
} catch (e) {
  print("Error >> " + e.toString());
}
setState(() {
  downloading = false;
  print("Download Completes");
    });
  }

But I have to download multiple files. Is there any support in Dio package to download multiple files? Or Any other better way to handle downloading multiple files in Flutter application?

dio file flutter-dependencies dart flutter
1 Answers

iTo nest multiple calls you can use:

Future.wait([]);

Like this:

Future.wait([dio.download(firstUri, path1), dio.download(secondUri, path2)];

or if you want to start one download after the other:

dio.download(uri1, path1).then((value) => dio.download(uri2, path2));

Those just use darts async functionalities so I believe you can use this approach with any async call.

Thiago Fontes0
Related