import 'package:just_audio/just_audio.dart'; class UserMediaManager { factory UserMediaManager() { return _instance; } UserMediaManager._internal(); static final UserMediaManager _instance = UserMediaManager._internal(); AudioPlayer? _assetsAudioPlayer; Future startRingingTone() async { const path = 'assets/sounds/phone.ogg'; final player = _assetsAudioPlayer = AudioPlayer(); player.setAsset(path); player.play(); return; } Future stopRingingTone() async { await _assetsAudioPlayer?.stop(); _assetsAudioPlayer = null; return; } }