IPC_USING_AppGroups

This repository provides two apps illustrating how to perform inter-process communicaiton using App Groups.

• GroupedFileSenderApp: writes continuously fake glucose data to the glucoseValues.txt in the "group.kuq" group.
• GroupFileReceiverApp: observes these changes in realtime.

Background

iOS does not provide inter-app communication. Notificaiton Center notificaitons are not broadcasted. In MaCOSX DistributedNotificaitonCenter can be used to send notificaitons between processes. However, this is not available in iOS. One workaround is using coordinated file writes and observations using App Groups. App Groups are shared direcotries that can be accessed by application that share the same group capability Apps can write to these common files and observe changes to these files. Another alternative are Darwin notifications. Which are not part of this project (see further reading).

License

This project is free of use

Acknowledgments

This code is based on discussions on stackoverflow: https://stackoverflow.com/questions/27011916/how-to-communicate-between-ios-app-containing-extension-and-extension-not-host https://stackoverflow.com/questions/64446024/ios-14-nsfilepresenter-not-getting-callbacks-notifications-works-on-ios13

Further Reading

Darwin Notificaitons: https://stackoverflow.com/questions/27011916/how-to-communicate-between-ios-app-containing-extension-and-extension-not-host This repository might do something like this. https://github.com/p-x9/DistributedNotificationCenter/tree/main