flutter_bloc_pattern 0.0.1+1

  • README.md
  • CHANGELOG.md
  • Example
  • Installing
  • Versions
  • 67

flutter_bloc_pattern #

Base class and provider for bloc in flutter

Getting Started #

This project is a starting point for a Dart package, a library module containing code that can be shared easily across multiple Flutter or Dart projects.

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

[0.0.1+1] - 8 February 2019

  • Add example

[0.0.1] - 8 February 2019

  • Initial

example/README.md

Simple example a port of the standard "Counter Button" example from Flutter

counter_bloc.dart:

import 'package:flutter_bloc_pattern/flutter_bloc_pattern.dart';
import 'package:meta/meta.dart';
import 'package:rxdart/rxdart.dart';

//ignore_for_file: close_sinks
class CounterBloc implements BaseBloc {
  ///
  /// Inputs
  ///
  final void Function() increment;

  ///
  /// Outputs
  ///
  final ValueObservable<int> state;

  ///
  /// Clean up
  ///
  final void Function() _dispose;

  CounterBloc._(
    this._dispose, {
    @required this.increment,
    @required this.state,
  });

  factory CounterBloc() {
    final incrementController = PublishSubject<void>();
    final state = incrementController
        .scan<int>((acc, _, __) => acc + 1, 0)
        .shareValue(seedValue: 0);

    return CounterBloc._(
      incrementController.close,
      increment: () => incrementController.add(null),
      state: state,
    );
  }

  @override
  void dispose() => _dispose();
}

main.dart:

import 'package:counter/counter_bloc.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc_pattern/flutter_bloc_pattern.dart';

void main() {
  runApp(
    BlocProvider<CounterBloc>(
      child: MyApp(),
      initBloc: () => CounterBloc(),
    ),
  );
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData.dark(),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Home page'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: const <Widget>[
            Text('You have pushed the button this many times:'),
            TextCounter(),
          ],
        ),
      ),
      floatingActionButton:
          const IncrementButton(), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

class TextCounter extends StatelessWidget {
  const TextCounter({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final bloc = BlocProvider.of<CounterBloc>(context);
    return StreamBuilder<int>(
      stream: bloc.state,
      initialData: bloc.state.value,
      builder: (context, snapshot) {
        return Text(
          '${snapshot.data}',
          style: Theme.of(context).textTheme.display1,
        );
      },
    );
  }
}

class IncrementButton extends StatelessWidget {
  const IncrementButton({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final bloc = BlocProvider.of<CounterBloc>(context);
    return FloatingActionButton(
      onPressed: bloc.increment,
      tooltip: 'Increment',
      child: Icon(Icons.add),
    );
  }
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  flutter_bloc_pattern: ^0.0.1+1

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter packages get

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:flutter_bloc_pattern/flutter_bloc_pattern.dart';
  
Version Uploaded Documentation Archive
0.0.1+1 Feb 8, 2019 Go to the documentation of flutter_bloc_pattern 0.0.1+1 Download flutter_bloc_pattern 0.0.1+1 archive
0.0.1 Feb 8, 2019 Go to the documentation of flutter_bloc_pattern 0.0.1 Download flutter_bloc_pattern 0.0.1 archive
Popularity:
Describes how popular the package is relative to other packages. [more]
47
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
70
Overall:
Weighted score of the above. [more]
67
Learn more about scoring.

We analyzed this package on Apr 16, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.2.0
  • pana: 0.12.14
  • Flutter: 1.4.7

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Maintenance suggestions

The package description is too short. (-20 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11
meta 1.1.6 1.1.7
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies
flutter_test
mockito ^4.0.0