Question

How do I convert a UIImage to NSData or CFDataRef? I need to pass a CFDataRef to ABPersonSetImageData.

Answer 1

This worked for me, for a PNG image. For other image types, I assume you just have to find the corresponding UIImage…Representation method.

UIImage *image = [UIImage imageNamed:@"imageName.png"];
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(image)];

If you need a CFDataRef for a UIImage, it’s just one more line.

CFDataRef imgDataRef = (CFDataRef)imageData;