Wednesday, November 7, 2012

UIView into UIImage. i.e. screen snapshot of a view

@interface UIView(Extended) 

- (UIImage *) imageByRenderingView;

@end


@implementation UIView(Extended)


- (UIImage *)imageByRenderingView
{   
    UIGraphicsBeginImageContext(self.bounds.size);
    [self.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return resultingImage;
}

@end
 
 
Just Call:- 
 
UIImage *currImage = [self.view imageByRenderingView];
 

 
You can split your UIImage in two by using this code:
CGImageRef topOfImageCG =
         CGImageCreateWithImageInRect(currImage.CGImage,
                                      CGRectMake(0,
                                                 0,
                                                 currImage.size.width,
                                                 currImage.size.height / 2.0));

UIImage *topOfImage = [UIImage imageWithCGImage:topOfImageCG];

CGImageRelease(topOfImageCG);