Firebase匿名ID的常数 [英] How constant is the Firebase Anonymous ID

问题描述

我正在使用Firebase实时数据库构建应用程序.该应用程序最初主要是处于离线状态，但我们计划稍后进行在线更新.我打算使用匿名登录，以获取用户的ID并将其所有数据存储在该ID下:

I'm building an app with Firebase Real-Time Database. The app will be mainly offline at first, but we are planning an online update later. I'm planning to use the anonymous sign in, to get an ID for the user and store all his data under this ID:

Auth.auth().signInAnonymously(completion: { (user, error) -> Void })

登录后，我得到一个看起来像这样的ID:pCfgFOvEYEYvfWHaaaaavKgs8h33

After signing in I get an ID that looks like something like this: pCfgFOvEYEYvfWHaaaaavKgs8h33

是否可以确保此ID在给定设备上始终保持不变?我找不到与此有关的任何文档.

Is it guaranteed that this ID will ALWAYS stay unchanged on a given device? I couldn't find any documentation about this.

推荐答案

用户的UID 从不更改.因此，在您匿名登录用户后，UID将保持不变，直到您再次调用signInAnonymously或调用

A user's UID never changes. So after you sign in a user anonymously, the UID will remain the same until you call signInAnonymously again or until you call signout.

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