哥哥教你Flutter中5种最常见的状态管理模式对比

1，Bloc + Stream  无需导包，Flutter自带‘dart:async’库

class PageBloc {

int_count =0;

  ///    StreamController

  StreamController_countController =StreamController();

  ///     对外提供入口

  StreamSinkget _countSink =>_countController.sink;

  ///     提供 stream StreamBuilder 订阅

  Streamget stream =>_countController.stream;

  void dispose() {

_countController.close();

  }

void add() {

_count++;

    _countSink.add(_count);

  }

void dec() {

_count--;

    _countSink.add(_count);

  }

}

2，Scoped_model  导包   scoped_model: ^1.0.1

class CountModelextends Model {

int_count =0;

  intget count =>_count;

  void add() {

_count++;

    notifyListeners();

  }

void dec() {

_count--;

    notifyListeners();

  }

static CountModelof(BuildContext context) =>

ScopedModel.of(context);

}

3，Flutter Redux   导包 flutter_redux: ^0.5.3

4，Fish_Redux   导包   fish_redux: ^0.1.7

5，Provider  导包  provider: ^3.0.0+1

项目地址来自：https://github.com/CarGuo/state_manager_demo