IOS: How to draw and calculate position of the custom callout arrow in IOS 6?

I am trying to implement an application which has a map and on that map there are several pins. Also I am implementing a custom callout view for the map annotations by sub classing the MKAnnotationView class.

Every thing is working fine but I am unable to draw the callout arrow and cannot calculate the exact position of the callout arrow so that it shows right on top of the annotation pin.

Currently I am just adding my custom callout view as a subview of MKAnnotationView and altering its frame. But cannot draw and position the callout arrow on the map.


您应该查看已构建此功能的SMCalloutView项目。

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