APNS不是广播媒体。 正如文档中所述：

APNS is not a broadcast medium. As it says in the documentation:

Apple推送通知服务将给定提供商的通知
传输并路由到给定设备。

Apple Push Notification service transports and routes a notification from a given provider to a given device.

当您从服务器发送通知时，其中一个参数是设备ID。

When you send a notification from the server, one of the paramters is the device ID.