MKMapViewDelegate should be notified when satellite imagery isn't available

Originator:futuretap
Number:rdar://12159465 Date Originated:23-Aug-2012
Status:Open Resolved:
Product:iPhone SDK Product Version:6.0 beta 4
Classification:Enhancement Reproducible:Not Applicable
 
In Satellite and Hybrid mapStyle, the MKMapViewDelegate should be notified when satellite imagery isn't available because the user zoomed in too far. Otherwise there's nothing an app can do to prevent the ugly black background with the forbidden icons.

I envision this API:

- mapView:(MKMapView *)mapView imageryNotAvailableIfZoomedPastMapRect:(MKMapRect)mapRect

Apps can then react by either switching to "Map" mapType or zooming out to the given mapRect.

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