flutter_load_image_fast.dart

flutter_load_image_fast.dart

@override
void initState() {
  super.initState();
  downloadWhenNecessary();
}
  
downloadWhenNecessary({Function action}) {
  _downloadImage().then((bytes) async {
      if(!mounted) return;

      // build an Image Widget from the downloaded image bytes.
      final image = Image.memory(bytes, fit: BoxFit.contain,);
      // do the precache here!!!
      await precacheImage(image.image, context);
      // ask state to build the widget right after Image Widget is created.
      setState(() { });
  });
}