所以目前我的任务是将一个base64列表转换为flutter web中的图像。我尝试过使用Flutter Web的归档包，我写了这样的代码：

...
import 'package:archive/archive.dart';
...

var encoder = ZipEncoder();
var archive = Archive();

 for (String imgB64 in ListOfB64) {
   Uint8List imageByte = base64.decode(imgB64);
   ArchiveFile archiveFiles = 
   ArchiveFile.stream("filename.png",imageByte.lengthInBytes,imageByte as InputStreamBase);
   archive.addFile(archiveFiles);
 }

var outputStream = OutputStream(byteOrder: LITTLE_ENDIAN,);
var bytes = encoder.encode(archive,level: Deflate.BEST_COMPRESSION,output: outputStream);

download("test.zip",bytes) //download the recently created .zip file

字符串
但我总是得到Uncaught (in promise) Error: Expected a value of type 'InputStreamBase', but got one of type 'NativeUint8List'的错误，但似乎我找不到一种方法将Uint8List转换为InputStreamBase。