应用程序处于后台时的iOS通知 [英] iOS Notification when App is in Background

问题描述

我想知道是否可以在iOS中启动后台进程。在我的后台进程每隔30分钟就应该调用一个函数，以便在我的数据库中检查是否有新消息等，以便发送通知。我不想实现推送通知。
我不知道在哪里实现这个功能，如果有覆盖功能，例如在AppDelegate中。

i want to know if it is possible to launch a background process in iOS. In my background process every 30 minutes there should a function get called, in order to check in my database if there are new messages, etc in order to send a notification. I don't want to implement push notifications. I don't know where to implement this feature, and if there are override functions e.g. in the AppDelegate.

感谢您的帮助，
hannes

Thanks for your help, hannes

推荐答案

你想要的是背景提取，从iOS 7开始提供：

What you want is called "Background Fetch" and is available starting from iOS 7:

https://www.objc.io/issues/5-ios7/multitasking/

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