ios potential leak how to solve?

Question

I've analyzed my project: and this is the result:

what means and how can I solve this?

Answer 1

It looks like you might want to familiarise yourself with the Memory Management Programming Guide for Core Foundation, specifically the ownership policy.

In short, you have to CFRelease() the pdfURL object. :-)

Answer 2

You should release pdfURL after you have used it to create pdf.

Try...

CGPDFDocumentRef pdf = CGPDFDocumentCreateWithURL(pdfURL);
CFRelease(pdfURL);