[MASMCalloutMaskedBackgroundView contentMask] takes more time.

[hadesh]

Hello, when i use the calloutViw, i found that every time i touched the PinAnnotationView, the calloutView presented after a while.

Then i use Instruments -> Time Profiler, finally i found "[MASMCalloutMaskedBackgroundView contentMask] " costs the most time.

How can i optimize the rendering?

Thanks!