Download A Network Image In Flutter using Dio Library

networkresdown.dart

Future<Null> _downloadNetworkImage() async {
    Dio dio = Dio();
    try {
      var dir = await getTemporaryDirectory();
      print(dir);

      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text("Downloading image. Please wait...")));
      await dio.download(url, '${dir.path}/image.jpeg',
          onReceiveProgress: (rec, total) {
        setState(() {
          _downloading = true;
          _progressString = ((rec / total) * 100).toStringAsFixed(0) + "%";
          print(progressString);
          if (_progressString == "100%") {
            Scaffold.of(context)
                .showSnackBar(SnackBar(content: Text("Next Action...")));
            // NextAction();
          }
        });
      });
    } catch (exp) {}
  }