快速将 UIColor 转换为 CGColor

Question

This is the Obj-C code:

CGContextSetStrokeColorWithColor(context, [[UIColor lightGrayColor] CGColor]);

How do I write it in swift.

Answer 1

// Original answer.
var newColor = UIColor.lightGrayColor().CGColor

// Swift 3 version
var newColor = UIColor.lightGray.cgColor

Answer 2

Oddly enough, as Swift has evolved to 3.0 the answer has evolved as well. I ran across this while converting some Objective C code to Swift. I hope this helps someone! :-) Here is what it is today:

context.setStrokeColor(UIColor.lightGray.cgColor)

And it's funny, this "light gray" answer is actually helping me debug some code too! Thank iou!

Answer 3

斯威夫特 4+ 版本

UIColor.lightGray.cgColor