FCM主题 - 无法订阅主题：xxx with token：（null） - iOS [英] FCM topic - Cannot subscribe to topic: xxx with token: (null) - iOS

问题描述

我从Firebase Messaging API收到此错误？：

I'm getting this error from Firebase Messaging API:

[Firebase/Messaging][I-FCM002010] Cannot subscribe to topic: /topics/testTopic with token: (null)

但之前：

Messaging.messaging().subscribe(toTopic: "/topics/testTopic")

我打印出这样的代币：

print("TOKEN: \(InstanceID.instanceID().token() ?? "NO TOKEN")")

其结果是：

TOKEN:cXPhGQ_inE4:APA91bEKZF5depHmIm9gDliCFRCRcnJf5LYy5FMg6nhpWvKU3o3HEtr1WTBHUiCZXT4XzhVg2oqXzhtfrgf83brtLdqXii546644ciMPO80tri4JPueQBClKbaomEfoh54ku8E2lw

因此令牌不是 null 。

我做错了什么？有人帮忙吗？

Am I doing something wrong? Anyone some help?

推荐答案

问题是我想订阅 didFinishLaunchingWithOptions 但是这一点并非所有服务都已设置。
解决方案在委托中订阅 didRegisterUserNotificationSettings 。

The problem was that I wanted to subscribe in didFinishLaunchingWithOptions but in that point not all services were set up. The solution was to subscribe in the delegate didRegisterUserNotificationSettings.

这篇关于FCM主题 - 无法订阅主题：xxx with token：（null） - iOS的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！