![]() ![]() PSPDFKit.It should be based in the PDFKit framework available in iOS +11. I haven’t found any free or open-source solutions, and licenses for those in the list are pretty expensive ($500-$1K+). 1) The PDF Reader should be developed in Objective-C using a Xcode project with no third party libraries. If you’re looking for any alternative solution, check one of these frameworks. Not sure it would work really great with PDFs due to performance issues. Here you’ll find Apple’s sample code of advanced drawing with Apple Pencil. You would find some initial information about PDFKit in this WWDC video: track all changes during saving: you cannot apply changes during save, so need to store changes history in memory during saving, which may take some time with a bigger files.save copy each 30 seconds (for example),.apply all changes (adding/removing annotations) to visible document in PDFView and to copy, only add completed annotations due to performance,.This solution didn’t cause crashes, but made PDFView blink on this call. To do so, write the code below (in your Drawing View Controller, for this example): func addDateAnnotation() So, let’s assume we need to add some “Hello, world!” text to some place on a document’s last page. However due to lack of documentation and sample code (again!) it wasn’t an easy task. It seems to be a bug/oversight that PDFKit doesnt honor the isReadOnly attribute on annotations. Text annotations seems to be easier than drawing (Ink). Coding example for the question iOS PDFKit: make Text Widget PDFAnnotation readonly-swift. Hope, Apple would add some ways for customization in future releases. For example, in iOS 13 it features ruler, and if we don’t need it in our app, we’re still unable to remove it from ToolPicker. It looks much better than out instruments view, but is completely not customizable. PKToolPicker seems not to be the right fit as well. So, I feel that our solution from the first part of this tutorial is still the right one. Second part (about grabbing PKDrawing) seems to be not the right way for our task too because of requirement to zoom page and erase previously added annotations. ![]() Proposed solution seems to be impossible to implement (adding PKCanvasView to PDFPage). Signatures are a little different - you’d probably need to grab the PKDrawing from the PKCanvasView and then render the PKDrawing as an image inside of a PDFPage as you would a watermark. The PencilKit team recommends developers put a PKCanvasView over each PDFPage. You just can’t use PencilKit together with PDFKit like how it works in native iOS markup screens. We even created a ticket to Apple Technical Support asking is there any easy way to do so. filling the background in iOS PDFKit: creating PDF document in Swift. We tried to implement PencilKit support in our app right after iOS 13 release. We will also make use of Foxit PDF SDK for iOS to add PDF document management. PencilKit provides a rich palette to help users pick the right tools for drawing. Drawing with it feels fluid and responsive. Low latency and efficient drawing are two highlights of PencilKit. PencilKit allows you to easily build apps that create drawings or annotate documents. Third article is about creating PDF document on device and inserting/removing pages Before iOS 13, integrating Apple Pencil was more complicated.First article is about PDFKit basics & Ink annotations.This is the second article about Apple’s PDFkit featuring working with Text Annotations, document auto-saving and PencilKit. IOS PDFKit tutorial: Text Annotations & more ![]()
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