Can an iOS app send HTTP requests when not visible?

Question

I have an issue with an iOS development company that claims the app they are building for us cannot keep sending HTTP requests to our back-end with a timer when not visible (eg as soon as I press the home button or go check my emails) due to operating system limitations.

Is it true or are they being lazy?

I understand if the app gets removed from memory whenever memory is needed by other apps after a while, but no request being made at all as soon as we go check our emails or show the home screen, really?

So to put my question clearly: When is a regular (non-VOIP app) limited by the iOS operating system in the execution of its code and sending of requests?

Thanks!

Answer 1

您可以注册该应用程序以进行后台处理，这时操作系统将定期唤醒该应用程序，然后可以运行http请求，但您无法控制将唤醒应用程序的时间表以进行操作系统优化，使用模式，电池电量，网络可用性等方面的信息