Can I edit the pixels of the UIImage's property CGImage

Question

UIImage has a read-only property CGImage. I have to read its pixels to a memory block and edit them and then make a new UIImage to replace the old one. I want to know if th

Answer 1

Change the NSData *data line, in Shaun's answer, to this and it works perfectly in iOS7!

 NSData *data        = (NSData *)CFBridgingRelease(CGDataProviderCopyData(CGImageGetDataProvider(imageRef)));