iphone - dial movement for compass in iphone

Question

I got a magnetic heading value from a compass. Now I need to rotate the needle based on the heading(angle) from that. Please someone guide me how to do this.

Thanks Prior...

Answer 1

您始终可以使用 CGAffineTransformMakeRotation 转换（旋转）您的图层（指南针）。如需进一步参考，请查看此问题。