主题不会保存在 Firebase 中

问题描述

我正在尝试让用户订阅主题并将其保存在 Firebase 中.我遵循了 firebase.google.com 的指南，并在用户点击按钮时添加了以下代码:

I'm trying to let a user subscribe to a Topic and save it in Firebase. I've followed the guides from firebase.google.com and have added the following code when a user taps a button:

[[FIRMessaging messaging] subscribeToTopic:@"/topics/sampletopic"];

当我测试单击此按钮时，没有任何反应.我已经向 podfile 添加了必要的内容.我错过了什么?

Nothing happens though when I test clicking this button. I've added what is necessary to the podfile. What am I missing?

这甚至出现在 Firebase 的什么地方?在哪里可以看到我保存的主题?

edit: where does this even show up in Firebase? Where can I see my saved topics?

推荐答案

只要有订阅者，就会自动创建主题.但是，对于 FCM，它需要大约 24 小时才能在控制台中使用，以下帖子中也提到过:

A topic is created automatically so long that there is a subscriber. However, for FCM, it takes about 24 hours for it to be available in the console, as also mentioned in the following posts:

• https://stackoverflow.com/a/39371301/4625829
• 如何在 FCM 通知中创建主题
• https://stackoverflow.com/a/37848400/4625829

您可以在 Firebase 中发送新消息时查看它控制台，然后在目标部分中，选择主题.

You can view it when you are going to Send a New Message in the Firebase Console, then in the Target section, choose Topic.

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