如何在Flutter中从图像中获取像素颜色？

import 'package:flutter/material.dart';
import 'dart:ui' as ui;

ImageProvider imageProvider = AssetImage('path_to_image');
ImageStream stream = imageProvider.resolve(ImageConfiguration.empty);
stream.addListener(ImageStreamListener((ImageInfo info, bool synchronousCall) {
  ui.Image image = info.image;
  // 获取像素颜色
  Color pixelColor = getColorFromPixel(image, x, y);
  // 处理像素颜色
  // ...
}));

Color getColorFromPixel(ui.Image image, int x, int y) {
  if (image != null) {
    ByteData byteData = image.toByteData();
    if (byteData != null) {
      int pixelOffset = (y * image.width + x) * 4;
      int pixelData = byteData.getUint32(pixelOffset);
      int red = (pixelData >> 16) & 0xFF;
      int green = (pixelData >> 8) & 0xFF;
      int blue = pixelData & 0xFF;
      return Color.fromARGB(255, red, green, blue);
    }
  }
  return Colors.transparent;
}