问题
I have an MKAnnotationView where I want to rotate the image property only.
If I use the following...
self.image= image;
[self setTransform:CGAffineTransformMakeRotation(DEG2RAD([item.heading floatValue]))];
It rotates the whole annotationView and the subsequent callouts which I do not want. Is there a way to just rotate the image property?
回答1:
The simplest way is probably to put the image in a UIImageView, add that as a subview to the MKAnnotationView, and affine that.
If you are targeting iOS 5.0 you could look at CIAffineTransform but I don't know enough about CoreImage to advise.
来源：https://stackoverflow.com/questions/8401514/mkannotationview-only-rotate-the-image-property