readImage static method

Future<Image> readImage(
  1. String fileName
)

读取assert里的文件， 返回图片类型数据

Implementation

static Future<ui.Image> readImage(String fileName) async {
  final ByteData data = await rootBundle.load(fileName);
  final u8List = data.buffer.asUint8List();
  final u8 = ImageUtils.rotate(u8List, -0);
  final ui.Codec codec = await ui.instantiateImageCodec(u8);
  final ui.FrameInfo fi = await codec.getNextFrame();
  return fi.image;
}