Create a UIImage/CGImageRef from CGPDFPageRef

[iF9]

Hi guy..
I'm trying to do an application that show a page of a pdf file. I found a example to draw in UIScrollView and show the page but.. I wanna draw the page in a UIImage or CGImageRef.
I'm using this code, but it crash.

-(UIImage *)image {
    UIGraphicsBeginImageContext(CGSizeMake(280, 320)); 
     
     CGContextRef context = UIGraphicsGetCurrentContext();

     CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("/file.pdf"), NULL, NULL);

     CGPDFDocumentRef pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);

     CGContextTranslateCTM(context, 0.0, 320);

     CGContextScaleCTM(context, 1.0, -1.0);

     CGPDFPageRef page = CGPDFDocumentGetPage(pdf, 4);

     CGContextSaveGState(context);

     CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, CGRectMake(0, 0, 280, 320), 0, true);

     CGContextConcatCTM(context, pdfTransform);

     CGContextDrawPDFPage(context, page);

     CGContextRestoreGState(context);

     UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();  
     UIGraphicsEndImageContext();
     return resultingImage;
}

Can somebody help me? Thanks a lot!

[tmd4]

Originally Posted by iF9

Hi guy..
I'm trying to do an application that show a page of a pdf file. I found a example to draw in UIScrollView and show the page but.. I wanna draw the page in a UIImage or CGImageRef.
I'm using this code, but it crash.

-(UIImage *)image {
    UIGraphicsBeginImageContext(CGSizeMake(280, 320)); 
     
     CGContextRef context = UIGraphicsGetCurrentContext();

     CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("/file.pdf"), NULL, NULL);

     CGPDFDocumentRef pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);

     CGContextTranslateCTM(context, 0.0, 320);

     CGContextScaleCTM(context, 1.0, -1.0);

     CGPDFPageRef page = CGPDFDocumentGetPage(pdf, 4);

     CGContextSaveGState(context);

     CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, CGRectMake(0, 0, 280, 320), 0, true);

     CGContextConcatCTM(context, pdfTransform);

     CGContextDrawPDFPage(context, page);

     CGContextRestoreGState(context);

     UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();  
     UIGraphicsEndImageContext();
     return resultingImage;
}

Can somebody help me? Thanks a lot!

CFSTR("file.pdf") - its correctly! =) Thank you for you code it's helpfully for me! Thank you very match!!!