问题
You might find it as duplicate of this Question, but I didnt get any solution there. My scenario is like I am creating a PDF from existing PDF with some edits. That all works fine. My question is I want to add metadata, table of contents, bookmarks, what ever you call that is in metadata of PDF to newly created PDF. I am not able to understand XMP format as suggested here. Is there any way I can directly add TOC to new PDF. I am using following function but it is not working at all.
CGPDFContextAddDocumentMetadata(pdfContext, contdata);
Can any one suggest me right direction to dig in. Any 3rd party tool will also do. I tried podofo but I m not getting any way for porting it in ios.
回答1:
The XMP metadata and TOC/bookmarks are 2 different things. While the TOC in a PDF file can be read using the CGPDF* functions, it cannot be duplicated in another PDF file because the CGPDF* API does not let you create PDF objects and insert them in a PDF file.
回答2:
I recently did a lot of merging pdf's together and also populating form data. I would check out PDF Toolkit as it really helped me out. You can execute it from within your code.
来源：https://stackoverflow.com/questions/8122166/copy-table-of-contents-from-one-pdf-to-another