getImage static method

Future<Image> getImage(
  1. String asset
)

绘制时需要用到 ui.Image 的对象，通过此方法进行转换

Implementation

static Future<ui.Image> getImage(String asset) async {
  final ByteData data =
      await rootBundle.load("packages/flutter_weather_bg/$asset");
  final ui.Codec codec =
      await ui.instantiateImageCodec(data.buffer.asUint8List());
  final ui.FrameInfo fi = await codec.getNextFrame();
  return fi.image;
}