generateUiImgFromNet function

Future<Image> generateUiImgFromNet(
  1. String imageUrl
)

用网络图片生成ui.Image

Implementation

Future<ui.Image> generateUiImgFromNet(String imageUrl) async {
  final Completer<ui.Image> completer = Completer();
  final ImageStream stream =
      Image.network(imageUrl).image.resolve(ImageConfiguration.empty);

  // 监听图片流
  final listener = ImageStreamListener(
    (ImageInfo info, bool isSync) {
      completer.complete(info.image); // 成功加载图片
    },
    onError: (exception, stackTrace) {
      completer.completeError('Failed to load image: $exception'); // 处理错误
    },
  );
  stream.addListener(listener);

  // 在完成后移除监听器
  completer.future.then((_) => stream.removeListener(listener));

  return completer.future;
}