Flutter：

中文网 https://flutterchina.club/

Flutter实战 https://book.flutterchina.club/

混合开发：

Add Flutter to existing apps https://flutter.dev/docs/development/add-to-app

交互：

iOS Native混编Flutter交互实践 https://github.com/HansRove/iOSBridgeFlutterDemo

flutter_boost：

guthub https://github.com/alibaba/flutter_boost

Flutter 混合开发FlutterBoost iOS 接入流程 https://blog.csdn.net/lizubing1992/article/details/90954195