flutter_midi

A FLutter Plugin to Play midi on iOS and Android. This uses SoundFont (.sf2) Files.

Instalation

Download a sound font file, example: sound_font.SF2 file here.

Create an /assets folder and store the .sf2 files

Update pubspec.yaml

assets:
   - assets/sf2/Piano.SF2
   - assets/sf2/SmallTimGM6mb.sf2

Load the sound font to prepare to play;

 @override
  void initState() {
    load('assets/sf2/Piano.SF2');
    super.initState();
  }
  
 void load(String asset) async {
    FlutterMidi.unmute(); // Optionally Unmute
    ByteData _byte = await rootBundle.load(asset);
    FlutterMidi.prepare(sf2: _byte);
  }

Play and Stop the Midi Notes

 FlutterMidi.playMidiNote(midi: 60);

 FlutterMidi.stopMidiNote(midi: 60);

Libraries

flutter_midi
local_storage

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
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dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]