Flutter

Question

我正在尝试使用 extended_image_provider 包来编辑照片。当我想将 rawImageData 转换为 Uin8list 时，程序中断。我真的不明白为什么..

这是函数 => 它在 print('out')

之前中断

Future<void> crop([bool test = true]) async {
    final ExtendedImageEditorState state = editorKey.currentState!;
    final Rect? rect = state.getCropRect();
    final EditActionDetails action = state.editAction!;
    final double radian = action.rotateAngle;

    final bool flipHorizontal = action.flipY;
    final bool flipVertical = action.flipX;
    print("in--");
    final Uint8List img =  state.rawImageData;
    print("out--");
    final ImageEditorOption option = ImageEditorOption();

    option.addOption(ClipOption.fromRect(rect!));
    option.addOption(FlipOption(horizontal: flipHorizontal, vertical: flipVertical));
    if (action.hasRotateAngle) {
      option.addOption(RotateOption(radian.toInt()));
    }

    option.addOption(ColorOption.saturation(sat));
    option.addOption(ColorOption.brightness(bright + 1));
    option.addOption(ColorOption.contrast(con));

    option.outputFormat = const OutputFormat.jpeg(100);

    print(const JsonEncoder.withIndent('  ').convert(option.toJson()));

    final DateTime start = DateTime.now();
    final Uint8List? result = await ImageEditor.editImage(
      image: img,
      imageEditorOption: option,
    );

日志中的错误：


> Unhandled Exception:
> 'package:extended_image_library/src/extended_image_provider.dart':
> Failed assertion: line 34 pos 12: 'cacheRawData': you should set
> [ExtendedImageProvider.cacheRawData] to true, if you want to get
> rawImageData from provider.

Answer 1

如错误消息中所述，只需将 cacheRawData = true 添加到 ExtendedImageProvider。

Flutter - Extended_image_ 提供程序包错误

Flutter - Extended_image_ provider package error

image-processing

dart