IOS - Calculating tiles to display in a MapRect when

I have tried the solution on this but get 2 errors when I run the build. First "MAX_ZOOM undeclared" and Implicit declaraation of function'zoomScaleToZoomLevel'

I'm new to xCode, any help? need to fix tile zooming. T开发者_JAVA百科hanks Ken

Calculating tiles to display in a MapRect when "over-zoomed" beyond the overlay tile set

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MAX_ZOOM is a constant - you need to define it someplace in your code to match the number of zoom levels in your tile set.