easy_audio_trimmer 1.0.2+4

A Flutter package for trimming audio. This supports retrieving, trimming, and storage of trimmed audio files to the file system.

example/lib/main.dart

import 'dart:io';

import 'package:example/audio_trimmer_view.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Audio Trimmer',
        debugShowCheckedModeBanner: false,
        theme: ThemeData(
          primarySwatch: createMaterialColor(const Color(0xFF8B84C6)),
        ),
        home: const FileSelectorWidget());
  }
}

class FileSelectorWidget extends StatefulWidget {
  const FileSelectorWidget({super.key});

  @override
  State<FileSelectorWidget> createState() => _FileSelectorWidgetState();
}

class _FileSelectorWidgetState extends State<FileSelectorWidget> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Audio Trimmer"),
      ),
      body: Center(
        child: ElevatedButton(
            onPressed: () async {
              FilePickerResult? result = await FilePicker.platform.pickFiles(
                type: FileType.audio,
                allowCompression: false,
              );
              if (result != null) {
                File file = File(result.files.single.path!);
                // ignore: use_build_context_synchronously
                Navigator.of(context).push(
                  MaterialPageRoute(builder: (context) {
                    return AudioTrimmerView(file);
                  }),
                );
              }
            },
            child: const Text("Select File")),
      ),
    );
  }
}

MaterialColor createMaterialColor(Color color) {
  List strengths = <double>[.05];
  Map<int, Color> swatch = {};
  final int r = color.red, g = color.green, b = color.blue;

  for (int i = 1; i < 10; i++) {
    strengths.add(0.1 * i);
  }
  for (var strength in strengths) {
    final double ds = 0.5 - strength;
    swatch[(strength * 1000).round()] = Color.fromRGBO(
      r + ((ds < 0 ? r : (255 - r)) * ds).round(),
      g + ((ds < 0 ? g : (255 - g)) * ds).round(),
      b + ((ds < 0 ? b : (255 - b)) * ds).round(),
      1,
    );
  }
  return MaterialColor(color.value, swatch);
}