ios - How to set a Mapkit Overlay object's "zPosition"? (i.e. how to access it's view layer?) -


how can access & set layer.zposition property of mapkit overlay?

for example how this:

func mapview(mapview: mkmapview, rendererforoverlay overlay: mkoverlay) -> mkoverlayrenderer {    let layer = overlay.layer // ??? how    layer.zposition = 1 }

or there way?

background: want approach group mapkitview overlays have have determine types of objects displays on top of other types of objects ?


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