iOS - ImageCrop

UIImage+ImageCrop.m

@implementation UIImage (ImageCrop)

+ (UIImage *)centerOvalCropImage:(UIImage *)image
{
    CGFloat width = image.size.width;
    CGFloat height = image.size.height;
    CGRect targetRect = CGRectMake(width / 4.0, height / 4.0, width / 2.0, height / 2.0);

    UIGraphicsBeginImageContextWithOptions(CGSizeMake(width, height), NO, 0);
    CGContextRef context = UIGraphicsGetCurrentContext();

    // Circle crop
    CGPathRef path = CGPathCreateWithEllipseInRect(targetRect, NULL);
    CGContextAddPath(context, path);
    CGContextClip(context);

    // Draw image in rect, it will be scaled automatically
    [image drawInRect:targetRect];

    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return newImage;
}

@end