Details
Major Description
CBL iOS cannot be used in the app extensions.
Warning:
Linking against a dylib which is not safe for use in application extensions: /Users/wayne/Library/Developer/Xcode/DerivedData/.../Debug-iphonesimulator/CouchbaseLiteSwift.framework/CouchbaseLiteSwift
Currently, we are setting APPLICATION_EXTENSION_API_ONLY to NO. One of the reasons that we are setting it to NO is that we are using the sharedApplication object to detect whether the app is in the background or not for the replicator's backgrounding feature.
It might be possible that we could remove this restriction by accessing sharedApplication dynamically and limit the backgrounding feature for app extension (not sure how to do it yet).
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Priya Rajagopal Have you seen this when you worked on the blog?
We can try adding the config in parent project, and see
https://github.com/couchbase/couchbase-lite-ios/pull/1415
Tried with the attached project, with get the count from DB to display in extension, and then add more docs and replicate through Main project.
I have enabled(here return NO) to make it work even in case of extension, which also didn't crashed. Assume this is because we are calling the sharedApplication dynamically(here)
With the current checks, seems like it won't cause any trouble.
https://github.com/snej/MYUtilities/blob/master/MYBackgroundMonitor.m#L47
https://github.com/snej/MYUtilities/blob/master/MYBackgroundMonitor.m#L67
https://github.com/snej/MYUtilities/blob/master/MYBackgroundMonitor.m#L81
https://github.com/snej/MYUtilities/blob/master/MYBackgroundMonitor.m#L95
Build couchbase-lite-ios-3.0.0-236 contains couchbase-lite-ios commit d79d9c6 with commit message:
CBL-2168: Add flag for app extension safe APIs (#2872)
Strangely the CBL Swift can be built with APPLICATION_EXTENSION_API_ONLY = YES. We will need to do more test if the actual library can be used or not. Also, this seems to be working in 2017 (https://blog.couchbase.com/couchbase-lite-with-ios-app-extensions/)