我正在使用 Flutter 开发一个应用程序，该应用程序获取图像并允许用户将其保存在图库中。
我正在使用image_picker_saver插件来保存它。
一开始我在调用将图像保存在主线程中的方法，但我意识到这真的很慢，现在我试图把它放在一个新的隔离线程中，但我总是遇到同样的错误，所以，我的问题是：如何调用该方法将图像保存在新的隔离线程中？
我的代码如下所示：
主要.dart
class _AkkaMark extends State<CameraUpload>{
.
.
.
void _clickSaveImage() {
compute(saveImage, _imageFile).then((Future<String> futurePath) {
futurePath.then((String path){
_imageFile = new File(path);
});
});
}
.
.
.
}
toCompute.dart
Future<String> saveImage(File image) async {
return await ImagePickerSaver.saveFile(fileData: image.readAsBytesSync());
}
我尝试更改代码以尝试定位错误，但始终相同：
E/flutter (22602): [ERROR:flutter/runtime/dart_isolate.cc(717)] Isolate (413787440) 'main.dart:_spawn()' exited with an error
E/flutter (22602): [ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception:
E/flutter (22602): error: native function 'Window_sendPlatformMessage' (4 arguments) cannot be found
E/flutter (22602): #0 Window.sendPlatformMessage (dart:ui/window.dart:811:9)
E/flutter (22602): #1 BinaryMessages._sendPlatformMessage (package:flutter/src/services/platform_messages.dart:40:15)
E/flutter (22602): #2 BinaryMessages.send (package:flutter/src/services/platform_messages.dart:88:12)
E/flutter (22602): #3 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:286:49)
E/flutter (22602): <asynchronous suspension>
E/flutter (22602): #4 ImagePickerSaver.saveFile (package:image_picker_saver/image_picker_saver.dart:77:38)
E/flutter (22602): <asynchronous suspension>
E/flutter (22602): #5 saveImage (package:AKKAmark/toCompute.dart:113:35)
E/flutter (22602): <asynchronous suspension>
E/flutter (22602): #6 _IsolateConfiguration.apply (package:flutter/src/foundation/isolates.dart:88:16)
E/flutter (22602): #7 _spawn.<anonymous closure> (package:flutter/src/foundation/isolates.dart:96:30)
E/flutter (22602): #8 Timeline.timeSync (dart:developer/timeline.dart:168:22)
E/flutter (22602): #9 _spawn (package:flutter/src/foundation/isolates.dart:93:12)
E/flutter (22602): #10 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:292:17)
E/flutter (22602): #11 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
有人有任何线索吗？提前致谢
编辑
我把问题放在 GitHub 上，基本上插件只能在主 UI 线程中使用。