This project is an easy way of implementing a piano octave to your app.

• First you need to download your audio/assets for piano keys. I couldn't find all needed audios so I added some dummy ones. You can use a midi package as well with a sound font to get the right note frequency.
• Download an audio player that works perfectly for andorid and IOS. I chose AudioPlayers.

• AudioPlayers

1. The note.dart class includes the key widget. It is a text button that plays the sound on pressed.
2. The note-widget.dart class includes the list of all the keys needed, black and white keys.
3. The main.dart calls the NoteWidget for black and white keys. They are set in Stack which helps to overlap the keys in a simple way

To make this interface more intresting, you can try to use MIDI files and packages,

For any question or clarification, feel free to contact me via email.