Add pdf annotation with PDF Kit in OS 10.12

Question

Now the latest os10.12 operating system, PDF annotation can be displayed, but now I still have a problem, I recorded coordinate information in PDFView ->mouseDragged before,

Answer 1

PDFKit sems to be in bit of a pickle at the moment. https://forums.developer.apple.com/thread/60440

I have had some success using drawPage:inContext: (which is a private method covered by drawPage:toContext:). Try adding drawPage:inContext: to a class extension (ARC requires all selectors to be defined) and see if it gets called.