Flutter Navigation for redux

Navigation Middleware for Flutter's redux library.

Basic classes that enables page navigation through by utilizing Redux Store middleware facility.

This package is built to work with Redux.dart 4.0.0+.

Redux Middleware

• NavigationMiddleware<T> - The Middleware that reacts to NavigateToActions.

Examples

Take a look in the examples directory.

How to setup navigation

import 'package:flutter/material.dart';
import 'package:redux/redux.dart';

class AppState {
  final String name;
  
  const AppState(this.name);
  
  factory AppState.initial() => AppState(null);
  factory AppState.changeName(String name) => AppState(name);
}

class AppNameChangedAction {
  final String name;

  AppNameChangedAction(this.name);
}

AppState _onAppNameChanged(AppState state, AppNameChangedAction action) =>
    state.changeName(action.name);

final appReducer = combineReducers<AppState>([
  TypedReducer<AppState, AppNameChangedAction>(_onAppNameChanged),
]);


final store = new Store<AppState>(combineReducers<AppState>([appReducer]),
    initialState: AppState.initial(),
    middleware: [
      NavigationMiddleware<AppState>(),
    ]);

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return StoreProvider<AppState>(
        store: store,
        child: MaterialApp(
          title: 'My App',
          navigatorKey: NavigatorHolder.navigatorKey,
        )
    );
  }
}

void main() => runApp(MyApp());

How to navigate

Let's say you wish to navigate from a LoginPage to some dashboard page, you only need to dispatch a NavigateToAction.replace action with the appropriate path, which is registered to the dashboard page.

import 'package:flutter/material.dart';
import 'package:flutter_redux/flutter_redux.dart';

class LoginPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => LoginPageState();
}

class LoginPageState extends State<LoginPage> {
  @override
  Widget build(BuildContext context) {
    return StoreConnector<AppState, AuthBloc>(
      converter: (store) {
        return store;
      },
      builder: (BuildContext context, Store<AppState> store) {
        return Scaffold(body: Builder(
          builder: (BuildContext context) {
            return Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                RaisedButton(
                onPressed: () {
                  store.dispatch(NavigateToAction.replace('/dashboard'));
                },
                child: Text('Login'),
              )
              ],
            );
          },
        ));
      },
    );
  }
}

How to use pre and post navigation hooks

Let's use the same example as before, but now let's assume that you want to start a loader whilst navigating to the dashboard and stop it once you have navigated.

import 'package:flutter/material.dart';
import 'package:flutter_redux/flutter_redux.dart';

class LoginPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => LoginPageState();
}

class LoginPageState extends State<LoginPage> {
  @override
  Widget build(BuildContext context) {
    return StoreConnector<AppState, AuthBloc>(
      converter: (store) {
        return store;
      },
      builder: (BuildContext context, Store<AppState> store) {
        return Scaffold(body: Builder(
          builder: (BuildContext context) {
            return Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                RaisedButton(
                onPressed: () {
                  store.dispatch(
                    NavigateToAction.replace(
                      '/dashboard',
                      preNavigation: () => store.dispatch(StartLoadingAction()),
                      postNavigation: () => store.dispatch(StopLoadingAction()),
                    ),
                  );
                },
                child: Text('Login'),
              )
              ],
            );
          },
        ));
      },
    );
  }
}