Multiple Managed Object Context in main app and extension

Asked Jan 06 '21 at 06:07

Active Jan 06 '21 at 06:07

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My app and its extension are using a sharing database through app group, and using different NSManagedObjectContext because extension cannot use NSManagedObjectContext from main app.

The problem is, when I change data in main app and call NSManagedObjectContext save, I can't get newest data in extension immediately (I tried set stalenessInterval to 0 and call refreshAllObjects in extension before get data but it's not work too). I can only get newest data after a few minutes, sometimes hours.

How can I get newest data from main app immediately?

asked Jan 06 '21 at 06:07

Tiến Nguyễn Hữu

Have you made sure the file is actually written with the updated context - context save may not push changes to the file. – Volker Jan 06 '21 at 06:20
@Volker I don't get it, what do you mean "updated context"? – Tiến Nguyễn Hữu Jan 07 '21 at 04:01
updated context: you change managed objects or add new ones -> the moc is update, but not necessarily written to file. – Volker Jan 07 '21 at 08:31
@Volker I don't manage it, so how to make moc push change to the file immediately? – Tiến Nguyễn Hữu Jan 08 '21 at 09:10
maybe this helps: https://stackoverflow.com/questions/10428351/when-does-core-data-flush-to-disk – Volker Jan 08 '21 at 09:42
Well that's not true in my situation because I'm not using nested context – Tiến Nguyễn Hữu Jan 11 '21 at 01:07

Multiple Managed Object Context in main app and extension

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