Detecting if UIColor was created with colorWithPatternImage

问题

I have a UIColor that is passed into me. I need to detect if it is a plain color (e.g. created with colorWithRed:green:blue:alpha:) or if it is a color that was created with colorWithPatternImage.

How can I tell what kind of color a UIColor is, simple color or otherwise?

回答1:

You should be able to use the CGColorGetPattern function with the CGColor property, and check for NULL.

if( CGColorGetPattern( myColor.CGColor ) != NULL ) {}

回答2:

Another solution is to check the color space model:

if (CGColorSpaceGetModel(CGColorGetColorSpace(myColor.CGColor)) == kCGColorSpaceModelPattern)) 
{}

来源：https://stackoverflow.com/questions/14391577/detecting-if-uicolor-was-created-with-colorwithpatternimage