How to save crop_image? about image_crop HOT 4 CLOSED

flutter: ================= File: '/private/var/mobile/Containers/Data/Application/DBE50ECE-D66A-48C6-A1C3-1A15F602B300/tmp/image_crop_A2D9CA93-B387-4DE8-8269-E7CB040422F6-325-00000008F9BEEB4D.jpg'

flutter: Another exception was thrown: FileSystemException: Cannot open file, path = '/var/mobile/Containers/Data/Application/DBE50ECE-D66A-48C6-A1C3-1A15F602B300/Documents/File: '/private/var/mobile/Containers/Data/Application/DBE50ECE-D66A-48C6-A1C3-1A15F602B300/tmp/image_crop_A2D9CA93-B387-4DE8-8269-E7CB040422F6-325-00000008F9BEEB4D.jpg'' (OS Error: No such file or directory, errno = 2)

  //TODO: CROP IMAGE
  Future<void> _cropImage(BuildContext context) async {
    final scale = cropKey.currentState.scale;
    final area = cropKey.currentState.area;
    if (area == null) {
      // cannot crop, widget is not setup
      return;
    }

    // scale up to use maximum possible number of pixels
    // this will sample image in higher resolution to make cropped image larger
    final sample = await ImageCrop.sampleImage(
      file: _file,
      preferredSize: (3000 / scale).round(),
    );

    final file = await ImageCrop.cropImage(
      file: sample,
      area: area,
    );
    print("================= $file");
    setState(() {
      IDCardClass.frontImageFile = file.toString();
      widget.notifyParentFront();
      _corrping = false;
    });
    Navigator.pop(context);

// TODO: (5) REFRESH FRONT
 refreshFront() async {
   final _directory = await getApplicationDocumentsDirectory();
   _appDocumentsDirectory = _directory.path;

   setState(() {
     if (IDCardClass.frontImageFile == null) {
       print("IDCardClass.frontImageFile looks like null");
       _frontImageFile = null;
     } else {
       //FILE
       _frontImageFile = new File(
           "${_appDocumentsDirectory + "/" + IDCardClass.frontImageFile}");
     }
   });
 }

       Future.delayed(Duration(milliseconds: 200)).then((value) {
          sample.delete();
          croppedFile.delete();
        });

  Future<void> _crop(File originalFile) async {
    final crop = cropKey.currentState;
    final area = crop!.area;
    if (area == null) {
      //裁剪结果为空
      print('裁剪不成功');
    }

    await ImageCrop.requestPermissions().then((value) async {
      if (value) {
        final sample = await ImageCrop.sampleImage(
          file: originalFile,
          preferredSize: widget.preferredSize,
        );
        final croppedFile = await ImageCrop.cropImage(
          file: sample,
          area: crop.area!,
        );

        upload(croppedFile);
        Future.delayed(Duration(milliseconds: 200)).then((value) {
          sample.delete();
          croppedFile.delete();
        });
      } else {
        upload(originalFile);
      }
    });
  }