当应用程序在IOS后台时，如何在新的firebase消息（推送通知）上播放自定义铃声？答案

【问题标题】：How to play a custom ringtone on new firebase message(pushed notification) when app is in background for IOS?当应用程序在IOS后台时，如何在新的firebase消息（推送通知）上播放自定义铃声？
【发布时间】：2021-03-11 01:22:58
【问题描述】：

应用在android上运行正常（推送通知，设备开始响铃），但在IOS上，应用收到通知但再次打开应用后铃声响起...

我也设置了功能、后台模式（音频后台获取、远程通知和后台处理）和推送通知

我正在尝试在 onMessage 方法中播放自定义声音...

Firebase 监听器

void firebaseCloudMessagingListeners(BuildContext context) {
    final deliveryCubit = BlocProvider.of<DeliveryCubit>(context);
    final playerService = PlayerService();

    if (Platform.isIOS) getIOSPermission();

    _firebaseMessaging.configure(
      onMessage: (Map<String, dynamic> message) async {
           debugPrint('FMC -> $message');
           if(appInBackground){
           playerService.playRingtone();
         }
       
      },
      onResume: (Map<String, dynamic> message) async {
        debugPrint('on resume $message');
      },
      onLaunch: (Map<String, dynamic> message) async {

        debugPrint('on launch $message');
      },
    );
  }

播放器服务


import 'package:assets_audio_player/assets_audio_player.dart';
import 'package:path_provider/path_provider.dart' as path_provider;

class PlayerService {
  static PlayerService _instance;
  final assetsAudioPlayer = AssetsAudioPlayer();

  factory PlayerService() => _instance ?? PlayerService._internal();

  PlayerService._internal(){
    _instance = this;
  }

  void playRingtone(){
    assetsAudioPlayer.open(
    Audio("assets/audios/iosRingtone.mp3"),
      showNotification: false,
  );
    assetsAudioPlayer.play();
  }

  void pauseRingtone(){
    assetsAudioPlayer.pause();
  }
}

我尝试在 lifeCycleStateChange 上停止播放器...

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    switch(state){
      case AppLifecycleState.resumed:
        socketService.appInBackground = false;
        firebaseService.appInBackground = false;
        playerService.pauseRingtone();
        setState(() {
          appLifecycleState = AppLifecycleState.resumed;
        });
        print("LifecycleState resumed");
        break;
      case AppLifecycleState.inactive:
        print("LifecycleState inactive");
        socketService.appInBackground = true;
        firebaseService.appInBackground = true;
        setState(() {
          appLifecycleState = AppLifecycleState.inactive;
        });
        break;
      case AppLifecycleState.paused:
        socketService.appInBackground = true;
        firebaseService.appInBackground = true;
        print("LifecycleState paused");
        break;
      case AppLifecycleState.detached:
        print("LifecycleState detached");
        break;
    }
  }

【问题讨论】：

应用推送通知负载是否包含自定义警报声音设置？
不，没有为推送通知负载配置警报声音设置...

标签： android ios firebase flutter dart

【解决方案1】：

{
   “aps” : {
      “badge” : 9
      “sound” : “bingbong.aiff”
   },
   “messageID” : “ABCDEFGHIJ”
}

这是在推送通知负载中播放声音所必需的。还要确保您已请求警报和声音以及推送通知的权限。您的应用程序包中应该存在相同的文件名。你不需要解析任何东西。

https://developer.apple.com/documentation/usernotifications/setting_up_a_remote_notification_server/generating_a_remote_notification

【讨论】：

如果有帮助的话。请选择我的答案，这有助于我在这里保持活跃并帮助他人。

【解决方案2】：

您可以为 Firebase 推送通知设置自定义通知声音。

Custom sound remote push notification iOS not working 的一种重复

去看看这个https://stackoverflow.com/a/54104535/13375401，它可以工作......

【讨论】：