How to access hyperlinks in PDF documents (iPhone)?

Question

Is it possible to get access to "internal" links in PDF documents using CGPDFDocument, or other means? I'm building a simple reader app and would like to deliver my content in PDF form, but if I can't support links between pages in the doc this probably isn't going to work.

This question is similar, but does not address the issue of how to support hyperlinks.

Answer 1

See my answer here. Basically, you'll need to get familiar with PDF link annotations.

Answer 2

see this sample code...pdf hyperlinks works in this

https://github.com/vfr/Reader

Answer 3

If you're using Quartz to open and view a PDF, then yes, it looks like you will have access to internal links. Quartz will also let you add new links to PDFs. I don't have any first hand experience with iPhone/Mac development, but it would be quite strange for them to let you add hyperlinks, but not use them.

Answer 4

You need to do in two steps.

First: Parse your pdf to locate marked content operators

That's an exemple of a parsing code :

-(void)parseContent() {
    CGPDFOperatorTableRef myTable;
    myTable = CGPDFOperatorTableCreate();
    CGPDFOperatorTableSetCallback(myTable, "BMC", &myOperator_BMC);
    CGPDFContentStreamRef myContentStream = CGPDFContentStreamCreateWithPage(page);
    CGPDFScannerRef myScanner = CGPDFScannerCreate(myContentStream, myTable, autoZoomAreas);
    CGPDFScannerScan(myScanner);
    CGPDFScannerRelease(myScanner);
    CGPDFContentStreamRelease(myContentStream); 
}

void myOperator_BMC(CGPDFScannerRef s, void *info)
{
    const char *name;
    CGPDFScannerPopName(s, &name);
}

(You need to complete and adjust this code to match your requirement)

Second: respond to the toucheEnded message to handle tap on those zones and make the UI respond accordingly.