Swift 2&3: How to Use CGBitmapContextCreate

Question

I have the following code:

let ref:CGContextRef = CGBitmapContextCreate(nil , 200, 130, CGImageGetBitsPerComponent(self.CGImage), 0, CGImageGetColorSpace(self.CGImage), CGImageGetBitmapInfo(self.CGImage))

The problem is that I get this error:

Expression does not conform to type 'NilLieralConvertible'

What should I pass in instead of nil for the first argument and why?

score 12 · Accepted Answer · answered Aug 19 '15 at 21:06

12

The problem is the last argument. Make the last argument CGImageGetBitmapInfo(self.CGImage).rawValue.

answered Aug 19 '15 at 21:06

matt

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It's because the nature of bitmask types has completely changed in Swift 2.0. And CGBitmapInfo is a bitmask type. – matt Aug 19 '15 at 21:12
1

Works for Swift 3 too – David H Mar 04 '17 at 16:20

Swift 2&3: How to Use CGBitmapContextCreate

1 Answers1