导航在 Firebase Messaging Flutter 中不起作用

Question

屏幕无法在 onLaunh() 和 onResume() firebase 消息传递方法中导航，我尝试显示本地通知以导航屏幕但仍然失败。

我的负载

onResume 有效负载======{通知：{}，数据：{通知类型：视频呼叫，角色： ROLE_CONSILIER_CARIERA，google.original_priority：高， google.sent_time：1576478554401，google.delivered_priority：高， 约定： {"video_duration":"0","mod_desfasurare":"3","observatii_destinatar":"","initiator":"204","observatii_initiator":"chdh","data_sfarsit_programare":"2019-12-14 12:00:00","created_by_user":"204","data_inceput_programare":"2019-12-14 11:00:00","status_destinatar":"1","status_initiator":"1","descriere":"chhxsh","destinatar":"246","tip":"0","id" :"241","data_adaugarii":"2019-12-13 15:56:39","titlu":"test 13 dc","disponibilitate":"346"}，正文：Apelul 视频节目 este activ acum pentru student，标题：Escouniv， click_action：FLUTTER_NOTIFICATION_CLICK，google.message_id： 0:1576478554409777%dd3b8f6edd3b8f6e，collapse_key：com.sys.escouniv， google.ttl: 2419200, from: 347273381579, id: 50, status: done}}

  onLaunch: (Map<String, dynamic> msg) async {
        Log.e('onLaunch====== ', msg);
        Log.e('onLaunch data====== ', msg['data']);
       // showNotification(msg);
        _navigateToItemDetail(msg);
      /*  Future.delayed(
            const Duration(seconds: 4),
                () =>    Navigator.push(
          context,
          new MaterialPageRoute(builder: (context) => new StudentTutorials(user:UserType.Student,)),
        ));*/

      },

@Anand Saga here 我也跟着做， 据我了解，为什么我得到密钥notification null 但在onMessage 我得到notification 的标题和正文。

Answer 1

像这样在构建完成后添加一个布尔标志并将其设置为真

WidgetsBinding.instance.addPostFrameCallback((_){ flag = true; });

并在您的 onLaunch 中使用此计时器

Timer.periodic(Duration(seconds: 1), (timer){
  if(flag) {
    timer.cancel();
    doNavigation();
  }
});