How to List MP3 Audio Files from Storage and SD Card on Flutter App
Introduction
————
In mobile app development, accessing and managing media files is a common requirement. When building a music player or audio-based app using Flutter, you may need to list MP3 audio files from the device’s storage and SD card. In this blog post, we will guide you through the process of listing MP3 audio files from storage and SD card on a Flutter app.
Adding Required Dependencies
To access and list MP3 audio files, you need to add the necessary dependencies to your `pubspec.yaml` file. Add the `path_provider` and `path` packages to your project.
“`yml
dependencies:
flutter:
sdk: flutter
path_provider: ^2.0.2
path: ^1.8.0
“`
Importing Dependencies and Getting Storage Directory
Import the required packages and get the storage directory using the `path_provider` package.
“`dart
import ‘package:flutter/material.dart’;
import ‘package:pathprovider/pathprovider.dart’;
import ‘package:path/path.dart’;
import ‘dart:io’;
class AudioFileList extends StatefulWidget {
@override
AudioFileListState createState() => AudioFileListState();
}
class _AudioFileListState extends State
List
Future
final directory = await getExternalStorageDirectory();
final files = await directory?.list().toList();
setState(() {
_audioFiles = files ?? [];
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(‘Audio Files’),
),
body: _audioFiles.isEmpty
? Center(
child: Text(‘No audio files found’),
)
: ListView.builder(
itemCount: _audioFiles.length,
itemBuilder: (context, index) {
final file = _audioFiles[index];
if (file.path.endsWith(‘.mp3’)) {
return ListTile(
title: Text(basename(file.path)),
);
} else {
return Container();
}
},
),
);
}
}
“`
Filtering MP3 Audio Files
To filter only MP3 audio files, check the file extension using the `basename` function from the `path` package.
“`dart
if (file.path.endsWith(‘.mp3’)) {
return ListTile(
title: Text(basename(file.path)),
);
} else {
return Container();
}
“`
Listing MP3 Audio Files from SD Card
To list MP3 audio files from the SD card, use the `getExternalStorageDirectory` function from the `path_provider` package.
“`dart
final directory = await getExternalStorageDirectory();
final files = await directory?.list().toList();
“`
Conclusion
———-
In this blog post, we have shown you how to list MP3 audio files from storage and SD card on a Flutter app. By using the `path_provider` and `path` packages, you can access and manage media files in your Flutter app.
Frequently Asked Questions
————————-
1. Q: What dependencies are required to list MP3 audio files?
A: You need to add the `path_provider` and `path` packages to your `pubspec.yaml` file.
2. Q: How do I get the storage directory?
A: Use the `getExternalStorageDirectory` function from the `path_provider` package.
3. Q: How do I filter only MP3 audio files?
A: Check the file extension using the `basename` function from the `path` package.
4. Q: Can I list MP3 audio files from the SD card?
A: Yes, use the `getExternalStorageDirectory` function from the `path_provider` package.
5. Q: What is the purpose of the `path` package?
A: The `path` package provides a way to work with file paths and directories in a platform-agnostic way.
