iOS 唯一用户标识符 [英] iOS unique user identifier

问题描述

我正在为 iphone 编写一个应用程序，它使用 REST 与我的服务器进行通信.主要问题是，我需要以某种方式识别用户.不久前，我们还被允许使用 UDID，但现在已经不允许了.那我应该用什么代替呢?我在 iphone 上需要某种标识符，所以用户将删除应用程序，重新安装它，他将获得相同的 ID.

I'm writting an application for iphone, which communicates with my server using REST. The main problem is, I need to identify user somehow. Not so long ago, we were allowed to use UDID, but now its not allowed anymore. So what should I use instead? I need some kind of identifier on iphone, so user will delete application, install it again, and he will get same id.

推荐答案

首先，UDID是仅在 iOS 5 中被弃用.这并不意味着它已经消失(尚未).

Firstly, the UDID is only deprecated in iOS 5. That doesn't mean it's gone (yet).

其次，你应该问问自己是否真的需要这样的东西.如果用户获得一台新设备并在其上安装您的应用怎么办?相同的用户，但 UDID 已更改.同时，原始用户可能已经卖掉了他的旧设备，所以现在一个全新的用户安装了您的应用，并且您认为根据 UDID 是另一个人.

Secondly, you should ask yourself if you really need such a thing. What if the user gets a new device and installs your app on that? Same user, but the UDID has changed. Meanwhile, the original user might have sold his old device so now a completely new user installs your app and you think it's a different person based on the UDID.

如果您不需要 UDID，请使用 CFUUIDCreate() 创建唯一 ID 并在第一次启动时将其保存为用户默认值(使用 CFUUIDCreateString()> 首先将 UUID 转换为字符串).它将在备份和恢复中幸存下来，甚至在原始用户切换到新设备时也会出现.UDID 在很多方面都是更好的选择.

If you don't need the UDID, use CFUUIDCreate() to create a unique ID and save it to the user defaults on the first launch (use CFUUIDCreateString() to convert the UUID to a string first). It will survive backups and restores and even come along with the original user when they switch to a new device. It's in many ways a better option that the UDID.

如果您确实需要一个唯一的设备标识符(这听起来不像您需要的)，请按照 Suhail 的回答中指出的那样获取 MAC 地址.

If you really need a unique device identifier (it doesn't sound like you do), go for the MAC address as pointed out in Suhail's answer.

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