iOS Customize Callout Content

[mappy-mobile]

Add the ability to customize callout views content via the mapView:calloutViewForAnnotation: callback of MGLMapViewDelegate.

[friedbunny]

This would fix #2211.

[mappy-mobile]

I didn't mention issue #2211 because it seems to me that was about totally replacing the callout view.
Maybe both systems can be implemented :

• either the user provides a full view ( as requested in Allow more annotation callout view customization #2211)
• either the user provides only the content as implemented by this pull request

My callback could be renamed to 'calloutContentViewForAnnotation' and we could add a 'calloutViewForAnnotation' for the first use case ?

[friedbunny]

@mappy-mobile Ah yes, you're totally right —calloutViewForAnnotation threw me, at first glance.

I think our intention should still be to allow complete replacement of the callout view (#2211), but calloutContentViewForAnnotation/centerCalloutContentView (this PR) may also be useful.

/cc @incanus @1ec5

[1ec5]

Thank you for the pull request! We’re overhauling the callout API in #4948 to remove the SMCalloutView dependency. I’m not sure if we want to allow a halfway-custom callout view in the new API, but let’s see whether the implementation lends itself to something like that.