pickAudio method
目前仅支持mp3试试
Implementation
Future<String?> pickAudio({List<String>? exts}) async {
final result = await FilePicker.platform.pickFiles(
type: exts == null ? FileType.audio : FileType.custom,
allowCompression: true,
allowedExtensions: exts);
if (result == null) {
return null;
}
final f = result.files.first;
return f.path;
}