PDFKit add UITextField over PDFPage

Could you show the complete code of the class ?

And how you create the instance of PDFPage.

Depending how you create sampleTextField = UITextField(), it may not exist beyond where you define it.

You should probably declare a var at class level as UITextField?, and create in init.

Then, us in draw.

But once again, need to see more code.

Hi,

I have ViewController:

import UIKit
import PDFKit

class ViewController: UIViewController, PDFDocumentDelegate {
    
    @IBOutlet weak var pdfView: PDFView?
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        
        if let documentURL = Bundle.main.url(forResource: "Untitled12", withExtension: "pdf") {
            if let document = PDFDocument(url: documentURL) {
                
                pdfView?.autoScales = true
                pdfView?.backgroundColor = UIColor.lightGray
                
                document.delegate = self
                pdfView?.document = document   
            }
        }
        
    }
  
    func classForPage() -> AnyClass {
        return CustomPage.self
    }
}

And CustomPage:

class CustomPage: PDFPage {


    override func draw(with box: PDFDisplayBox, to context: CGContext) {

        super.draw(with: box, to: context)

        UIGraphicsPushContext(context)
        context.saveGState()

        let pageBounds = self.bounds(for: box)
        context.translateBy(x: 0.0, y: pageBounds.size.height)
        context.scaleBy(x: 1.0, y: -1.0)
        context.rotate(by: CGFloat.pi / 4.0)

        let string: NSString = "Custom string"
        let attributes = [
            NSAttributedStringKey.foregroundColor: UIColor(red: 0.5, green: 0.5, blue: 0.5, alpha: 0.5),
            NSAttributedStringKey.font: UIFont.boldSystemFont(ofSize: 64)
        ]

        // THIS WORK PERFECTLY:
        string.draw(at: CGPoint(x:250, y:40), withAttributes: attributes)

        // THIS DOESNT WORK:
        let sampleTextField = UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
        sampleTextField.placeholder = "Enter text here"
        sampleTextField.font = UIFont.systemFont(ofSize: 15)
        sampleTextField.autocorrectionType = UITextAutocorrectionType.no

        sampleTextField.draw(CGRect(x: 20, y: 100, width: 300, height: 40))


        context.restoreGState()
        UIGraphicsPopContext()

    }
}

I want to render textfields, radio button, checkboxies and signature fileds.

In signature fields I want to add custom tapped action when I tapped to annotation.

I did not test, but I would try:

class CustomPage: PDFPage {

     var sampleTextField: UITextField!

    override init() {
        super.init()
        sampleTextField = UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
        sampleTextField.placeholder = "Enter text here"
        sampleTextField.font = UIFont.systemFont(ofSize: 15)
        sampleTextField.autocorrectionType = UITextAutocorrectionType.no
    }

    override func draw(with box: PDFDisplayBox, to context: CGContext) {

        super.draw(with: box, to: context)

        UIGraphicsPushContext(context)
        context.saveGState()

        let pageBounds = self.bounds(for: box)
        context.translateBy(x: 0.0, y: pageBounds.size.height)
        context.scaleBy(x: 1.0, y: -1.0)
        context.rotate(by: CGFloat.pi / 4.0)

        let string: NSString = "Custom string"
        let attributes = [
            NSAttributedStringKey.foregroundColor: UIColor(red: 0.5, green: 0.5, blue: 0.5, alpha: 0.5),
            NSAttributedStringKey.font: UIFont.boldSystemFont(ofSize: 64)
        ]

        // THIS WORK PERFECTLY:
        string.draw(at: CGPoint(x:250, y:40), withAttributes: attributes)

        // THIS DOESNT WORK:
       /*  REMOVE HERE  let sampleTextField = UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
        sampleTextField.placeholder = "Enter text here"
        sampleTextField.font = UIFont.systemFont(ofSize: 15)
        sampleTextField.autocorrectionType = UITextAutocorrectionType.no. */

        sampleTextField.draw(CGRect(x: 20, y: 100, width: 300, height: 40))     // WHY DO YOU DRAW HERE ? IT WOULD BE ENOUGHT TO SET CONTENT
       sampleTextField.text = "Some text you entered" // If you need to change, but that should be just what was typed in

        context.restoreGState()
        UIGraphicsPopContext()

    }
}

Still not working,

but you have right, it is not a good idea to draw textfield directly, but I should set it in context.

How do I set it there?