Is it possible to strip or completely remove UIImageOrientation information from a UIImage?

Question

Is it possible to strip or completely remove UIImageOrientation information from a UIImage?

Can I set image.imageOrientation = nil or to nothing?

I want to physically rotate my image and strip the orientation.

Answer 1

You can not set to nil the imageOrientation since it's not an object. You could find it in the UIImage header definition file and you'll find it's defined as a NSInteger

typedef NS_ENUM(NSInteger, UIImageOrientation)

Apart from being a NSInteger the property associate to it is readonly, which means you can not change it directly through setter method:

@property(nonatomic,readonly) UIImageOrientation imageOrientation;

UIImageOrientationUp is the default orientation for UIImage, what you could do is to create a new image with the orientation you want to use/prefer using for example:

+ (UIImage *)imageWithCGImage:(CGImageRef)cgImage scale:(CGFloat)scale orientation:(UIImageOrientation)orientation NS_AVAILABLE_IOS(4_0);