flutter_midi 0.0.4

  • README.md
  • Example
  • Installing
  • Versions
  • 71


A FLutter Plugin to Play midi on iOS and Android.

Getting Started

For help getting started with Flutter, view our online documentation.

For help on editing plugin code, view the documentation.


For iOS download the sound_font.SF2 file here.


  • Fixing Android Bug
  • Added Midi to Android


  • Optional force unmute


  • Added Midi for iOS.


import 'package:flutter/material.dart';

import 'package:flutter_midi/flutter_midi.dart';

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

class MyApp extends StatefulWidget {
  _MyAppState createState() => new _MyAppState();

class _MyAppState extends State<MyApp> {
  /// When [true] the note will be played for as long as the button is pressed
  /// The sound starts the second the button is touched.
  /// When [false] the sound will be play when the button is pressed.
  /// If the user cancels the touch on drag the sound will not be played.
  /// In this mode the sound will play for a default time.
  bool _toggle = true;

  void initState() {

  /// Need to Load the sound_font.SF2 file in memory to play midi without lag.
  void _initPlatformState() async {
    String _message = await FlutterMidi.prepare();
    _message = await FlutterMidi.unmute();

  /// Starts playing the midi note
  void _playMidi(int midi) {
    FlutterMidi.playMidiNote(midi: midi)
        .then((dynamic message) => print(message))
        .catchError((dynamic e) => print(e));

  /// Stops playing the midi note
  void _stopMidi() {
        .then((dynamic message) => print(message))
        .catchError((dynamic e) => print(e));

  /// Creates a general resuable button that can toggle or just play a note.
  Widget _playButton({int midi, String name, bool toggle}) {
    return Container(
      color: Colors.blue,
      child: Listener(
        onPointerDown: (dynamic e) => toggle ? _playMidi(midi) : null,
        onPointerUp: (dynamic e) => toggle ? _stopMidi() : null,
        child: InkWell(
          onTap: toggle ? null : () => _playMidi(midi),
          child: Container(
            padding: const EdgeInsets.all(20.0),
            child: Text(
              style: const TextStyle(color: Colors.white),

  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Play Midi Note'),
        body: SingleChildScrollView(
          child: Center(
              child: Column(children: <Widget>[
              title: const Text('Toggle Mode'),
              trailing: Switch(
                value: _toggle,
                onChanged: (bool value) => setState(() => _toggle = value),
            ButtonBar(mainAxisSize: MainAxisSize.min, children: <Widget>[
              _playButton(midi: 60, name: "C", toggle: _toggle),
              _playButton(midi: 64, name: "E", toggle: _toggle),
              _playButton(midi: 67, name: "G", toggle: _toggle),

Use this package as a library

1. Depend on it

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

  flutter_midi: ^0.0.4

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_midi/flutter_midi.dart';
Version Uploaded Documentation Archive
0.0.4 Oct 24, 2018 Go to the documentation of flutter_midi 0.0.4 Download flutter_midi 0.0.4 archive
0.0.3 Oct 21, 2018 Go to the documentation of flutter_midi 0.0.3 Download flutter_midi 0.0.3 archive
0.0.2 Sep 25, 2018 Go to the documentation of flutter_midi 0.0.2 Download flutter_midi 0.0.2 archive
0.0.1 Sep 24, 2018 Go to the documentation of flutter_midi 0.0.1 Download flutter_midi 0.0.1 archive
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Learn more about scoring.

We analyzed this package on Dec 5, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.1.0
  • pana: 0.12.7
  • Flutter: 1.0.0


Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Maintenance suggestions

The description is too short. (-20 points)

Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

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

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


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11
meta 1.1.6
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8