Flutter“文件”无法分配给“XFile”

Question

我有将网络图像保存到本地缓存文件的功能，但是在将下载的列表文件存储到List<XFile>. 这是我的下载功能：

List<XFile>? imageFileList = [];
Future<File> downloadImage(url, filename) async {
    var httpClient = HttpClient();
    try {
      var request = await httpClient.getUrl(Uri.parse(url));
      var response = await request.close();
      var bytes = await consolidateHttpClientResponseBytes(response);
      final dir = await getTemporaryDirectory();
      File file = File('${dir.path}/$filename');
      await file.writeAsBytes(bytes);
      print('downloaded file path = ${file.path}');
      return file;
    } catch (error) {
      print('download error');
      return File('');
    }
  }

有什么方法可以将fileimageFileList 保存为：

imageFileList!.add(file);

Answer 1

将文件转换为 XFile：

XFile file = new XFile(file.path);

Answer 2

更改您的列表类型：

由此：

List<XFile>? imageFileList = [];

对此：

List<File>? imageFileList = [];

final ImagePicker _picker = ImagePicker();

 getImage() async {
   var images = await _picker.pickMultiImage();
   images!.forEach((image) {
     setState(() {
       _imageFileList!.add(File(image.path));
     });
   });
 }