Ios App Extension Share Core Data

If you re using data where apple already gives you an api for shared data you re set.

Ios app extension share core data. Xcode file new target today extension. Use core data sqlite or posix locks to help coordinate data access in a shared container. For passing data from our project to share extension we have to create framework so for creating framework go to file new target framework library cocoa touch framework.

Today extension image. Then create a swift file in this framework folder naming it dataaccess swift remove core data code from app delegate and paste it in dataaccess swift file which may look like this. How to create an extension.

Put your database in the shared container when you create a new xcode project and select the core data checkbox xcode automatically generates some boilerplate methods in the app delegate. The apple framework allows you to save your application s permanent data for offline use to provide undo functionality or to simply cache data for better performance. 1 today 2 action 3 share 4 photo editing 5 document provider 6 custom keyboard.

Do the same in the target of your app extension. To avoid data corruption you must synchronize data accesses. Core data got better and better over the years with improved apis that make it easier to work with.

Now your app and its extension are ready to share the container so it s time to put the data in it. Unfortunately the templates provided by xcode to create a new target for an app extension do not. The default stack created by xcode is contained within your appdelegate so it s probably best to move this to another location that can be better shared since using uiapplication is a compiler error in an extension.

Sharing a single database. Set up an app group. Core data and app extensions.