监测两个地点之间的距离

Question

I m monitoring the distance between many devices approching a single device using Map, when it reaches certain distance i want to trigger a notifcation . What database i need to use for fastest triggering. Did web service enough? It need to be sending requests frequently.

Answer 1

您需要为此使用套接字，因为它们是实时的，因为无论它们是否到达特定目的地，您都需要每秒获取它们的当前位置。使用 pod 'Socket.IO-Client-Swift' 并在您的应用程序中实现它们并且也在您的服务器端。