According to the allocations instrument, zooming drastically increases the memory size of the IOSurface elements associated with annotations. This problem doesn't seem to be recent, and the dev boards are really empty iOS side, it's almost scary. Even if I save the file to disk and reopen it fresh, zooming in with ink annotations causes a crash due to memory consumption. For both test cases, I used New Xcode 14, and as well as previously. I thought that the PDFDocumentAttribute could specify this, but they did not. While its relatively easy to do, the PDFKit framework was only introduced in 2017. You initialize a PDFDocument object with PDF data or with a URL to a PDF file. The document format needs to be German DIN A4 (letter format). This blog post covered how to create and modify a PDF in Swift using PDFKit. Overview The other utility classes are either instantiated from methods in PDFDocument, as are PDFPage and PDFOutline or support it, as do PDFSelection and PDFDestination. I checked the same code which worked properly in iOS 15. I have to create or append new pages to a PDFKit document using Swift 4. at that time PDFDocument did not show the original image content in PDFView in iOS 16. You render the HostingController on a window behind all other views and and draw its layer on a PDF. At first you create your SwiftUI view, then you put into an UIHostingController. While we make a pdf using an image file at that we add an image into PDFPage. After some thinking I came up with the idea of combining the UIKit to PDF method and SwiftUI. Creating a URL where SwiftUI can write the image data. The idea is to override the draw() function to do the bidding of the now absent PDFAnnotationStamp class (I found some obsolete doc about different kind of PDFAnnotation subclasses that are now gone). Make a pdf document by image using pdfkit in iOS 16. Creating a PDF with ImageRenderer takes eight steps: Deciding which views you want to render.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |