iOS：在后台运行app作为服务

Question

Being relatively new to iOS App development, I wish to develop an app which runs like a service in background (comparable with android service).
The goal of my app is to use the native voice recognition, also while the app is inactive.
My question is, would it principally be possible to code an app to be able to run also in background?
I've read in a few pretty old threads that iOS closes any app after three minutes.
However, should it be possible, I would be thankful for any coding example.

Answer 1

我不这么认为，因为如果应用程序是在后台，本地音频识别是为Siri。