Flutter WEB download option

Question

I am making flutter web app that should generate a file from user data. And have the option to download the output file.

But I can not find any options/packages whic

Answer 1

Response to bounty:

the case of an audio file it just starts playing rather than downloading it

I've done same thing with video, but I'm sure it will work with audio as well. I assume, your generated audio is an array or blob

    import 'dart:js' as JS;
    import 'dart:html' as HTML;

    const mimeType = 'audio/wav'; // TODO: Pick a right format

    void downloadFile(List chunks) async {
        final blob = HTML.Blob(chunks, mimeType);
        final objectUrl = await HTML.Url.createObjectUrlFromBlob(blob);
        final a = HTML.AnchorElement();
        a.href = item.url;
        a.download = "my_audio_file_${DateTime.now()}.wav";
        HTML.document.body.append(a);
        a.click();
        // Wait for click event to be processed and cleanup
        await Future.delayed(Duration(milliseconds: 100));
        a.remove();
        HTML.Url.revokeObjectUrl(item.videoObjectUrl);
    }