swiftios-pdfkitapple-pdfkit

Swift PDF render any UIView or UIViewController PDFKit

I made some research, I found that I can draw Image, Strings, Shapes with the PDFKit library. Is there any easy way to draw a UIView or the view of a UIViewController inside the PDF document?

I prefer a Swift answer, but I will accept Objective-C too.

Solution

  • The UIView as well as the view contained into the UIViewController, can be rendered with the layer:

    Get the context:

    let context = UIGraphicsGetCurrentContext()!

    UIView :

    view.layoutIfNeeded()
view.layer.render(in: context)

    UIViewController

    controller.loadViewIfNeeded()
controller.view.layer.render(in: context)

    Full working script:

    let pdfMetadata =
[
    kCGPDFContextCreator: "MyAppName",
    kCGPDFContextAuthor: "TheAuthor"
]
UIGraphicsBeginPDFContextToFile(filePath, CGRect.zero, pdfMetadata)

let context = UIGraphicsGetCurrentContext()!

UIGraphicsBeginPDFPage()

controller.loadViewIfNeeded()
controller.view.layer.render(in: context)

UIGraphicsEndPDFContext()