import 'package:flutter/foundation.dart'; class Item { final int id; final String body; Item({ @required this.id, @required this.body }); } class AppState { final List<Item> items; final int count; AppState({ @required this.items, @required this.count, }); AppState.initialState() : items = List.unmodifiable(<Item>[]), count = 0; }

import 'package:reduxexample/model.dart'; import 'package:reduxexample/redux/actions.dart'; import 'package:redux/redux.dart'; enum Actions { Increment } List <Item> addItemReducer(List<Item> state, action) { return [] ..addAll(state) ..add(Item(id: action.id, body: action.item)); } List <Item> removeItemReducer(List<Item> state, action) { return List.unmodifiable(List.from(state)..remove(action.item)); } List <Item> removeItemsReducer(List<Item> state, action) { return List.unmodifiable([]); } final Reducer <List<Item>> itemsReducer = combineReducers <List<Item>>([ new TypedReducer<List<Item>, AddItemAction>(addItemReducer), new TypedReducer<List<Item>, RemoveItemAction>(removeItemReducer), new TypedReducer<List<Item>, RemoveItemsAction>(removeItemsReducer), ]); int incrementReducer(int state, action) { if (action == Actions.Increment) { return state + 1; } return state; } AppState appStateReducer(AppState state, action) { return AppState( items: itemsReducer(state.items, action), count: incrementReducer(state.count, action), ); } 

final Store store = Store<AppState>( appStateReducer, initialState: AppState.initialState(), ); return StoreProvider<AppState>( store: store, child: new MaterialApp( title: 'Flutter App', theme: new ThemeData( primarySwatch: Colors.blue, ), home: MyHomePage() ), );