title: Is there any built in flutter library for 2D bar-code scanner?
body: <p>I am developing a mobile application with Flutter framework and I want to scan bill bar-code and extract its code, so I need a bar-code scanner library for my app. Actually I've googled and found some libraries and SDKs, but they are not written in Dart and I have to import and implement them separately for Android and iOS directories, also it has lots of effort for me to import native codes to a Flutter project. Now I have following questions:<br>
  Is there any Dart written and Flutter compatible package, library, SDk, API or ... to use in Flutter project?<br>
  Hasn't Google made Flutter version of its ML-KIT or Google-Vision SDKs for its own multi platform framework?<br>
  Thanks in advance for helping me.</p>