iOS 6 app crashes in EAGLContext when displaying m

问题:

We have an app that uses OpenGL and MKMapView. When we switched to iOS 6 it started crashing at [EAGLContext setCurrentContext:] with EXC_BAD_ACCESS whenever we tried to display a map after setting our own EAGLContext.

回答1:

iOS 6 maps are OpenGL based. Your app will crash if you don't call

[EAGLContext setCurrentContext:nil]

after you have set your own EAGLContext. We fixed our bug by putting the above call into the dealloc method of our class that was interacting with EAGLContext.