MGLOfflinePackObserver

[mateuszmackowiak]

The main issue for us is that we do not receive a callback on when the offline maps states are loaded.
When referencing [MGLOfflineStorage sharedOfflineStorage] for the first time it calls internally reloadPacks method witch is asynchronous with no callback.
I know that we can observer the packages by KVO and the for all packages we can request refreshProgress and then once again observer with KVO the state but synchronising it all is problematic and without proper memory management and removal of kvo observers it will crush.

I have made a pull request that extends the MGLOfflineStorageDelegate with an optional method - (void)didReloadPackagesForOfflineStorage:(MGLOfflineStorage *)storage; that should inform clearly what was loaded.

[julianrex]

@mateuszmackowiak thanks for the PR - we will review. FYI we're in the process of transitioning the iOS/macOS code to a separate repo, so please bear with us.

[julianrex]

Apologies for the delay - @mateuszmackowiak are you still interested in this feature? If so, can you please recreate it in http://github.com/mapbox/mapbox-gl-native-ios? /cc @1ec5

Closing this as not-actionable in this repo.

Update: We will create a new PR on your behalf.

[mateuszmackowiak]

Hi, I don't see the PR in the new repo? Should I create it?