iOS 推送通知设备令牌是否会更改? [英] Does a iOS Push notification device token change?

问题描述

在任何情况下，安装应用并注册通知后，设备令牌是否有可能发生变化.

Is there any possibilities for a device token to change after the app is installed and registered for the notification in any kind of scenarios.

场景如下:

• 应用更新
• iOS 更新或在任何其他随机场景中.

推荐答案

以前在文档中是这样的，

Previously in document it was like,

如果用户将备份数据恢复到新设备或重新安装操作系统，设备令牌发生变化.

If the user restores backup data to a new device or reinstalls the operating system, the device token changes.

来自新文档:

https://developer.apple.com/图书馆/档案/文档/NetworkingInternet/Conceptual/RemoteNotificationsPG/APNSOverview.html

重要提示:为保护用户隐私，请勿尝试使用设备标识设备的令牌.

Important: To protect user privacy, do not attempt to use a device token to identify a device.

APN 可以出于多种原因发布新的设备令牌:

APNs can issue a new device token for a variety of reasons:

• 用户在新设备上安装您的应用

• User installs your app on a new device

用户从备份中恢复设备

用户重新安装操作系统

其他系统定义的事件

因此，应用必须在启动时请求设备令牌，如 APNs 到设备连接信任和设备令牌中所述.

As a result, apps must request the device token at launch time, as described in APNs-to-Device Connection Trust and Device Tokens.

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