How to create custom audio editing experiences in FlutterFlow?

Before you start

Before starting this tutorial, make sure that you have FlutterFlow set up on your system. You can do this by visiting FlutterFlow's official website and following the on-screen instructions.

We will be using flutter_sound Flutter plugin that provides basic audio playing and recording features.

Step 1: Download flutter_sound Plugin

The first thing you need to do is to add the flutter_sound to your FlutterFlow project.

• In your project, navigate to the Lib folder where all dependencies are stored.
• Find the pubspec.yaml file.
• Open the file and scroll down to the dependencies: section.
• Add the following code flutter_sound: ^8.1.4. If version 8.1.4 is outdated, please visit the pub.dev to see the latest version of the plugin.

Your code should look something like this:

dependencies:
  flutter:
    sdk: flutter
  flutter_sound: ^8.1.4

Step 2: Import flutter_sound to Your Dart File

• Open the Dart file in which you want to add the audio editing experiences.
• At the top of your Dart file, type the following:

import 'package:flutter_sound/flutter_sound.dart';

This line of code is necessary for your project to recognize the plugin and utilize its functionalities.

Step 3: Initialize FlutterSound

Next, you need to initialize the FlutterSound object - this will allow you to use the plugin features.

• At the top of your Dart file, declare a FlutterSound variable:

FlutterSound flutterSound = new FlutterSound();

• You also need to add the function to initialize the FlutterSound object in your initState:

@override
void initState() {
  super.initState();
  flutterSound = new FlutterSound();
}

Step 4: Implement the Audio Recording Feature

With our FlutterSound object ready to go, let's first implement the audio recording feature.

• Create a method named _startRecording that will initiate recording:

void _startRecording() async {
  await flutterSound.startRecorder();
}

• Also, create a method named _stopRecording that will stop the recording process:

void _stopRecording() async {
  await flutterSound.stopRecorder();
}

• Now add a button or any event that will trigger this function.

Step 5: Implement the Audio Playing Feature

We've added the recording functionality, now let's move towards playing the recorded audio.

• Create a method named _startPlaying that will initiate audio playing:

void _startPlaying() async {
  await flutterSound.startPlayer();
}

• Also, create a method named _stopPlaying that will stop the audio playing:

void _stopPlaying() async {
  await flutterSound.stopPlayer();
}

• Similar to recording, add a button or any event that will trigger these functions.

Congratulations! You have successfully integrated flutter_sound into your FlutterFlow project and created custom audio editing experiences. Run your app and start recording and playing audio.

Concluding Remarks

Please bear in mind that, flutter_sound may require permission to use the microphone on certain devices. Hence, you might need to add the necessary permission in your app's manifest file.