iOS Swift PDFKit Widget Subtype button border

Question

I'm working with PDFKit, and I'm looking to add a PDF Annotation that supports the user selecting/deselecting it. I'm using PDFAnnotationWidgetSubtype.button and I can't find a way to remove the border. I've tried subclassing PDFBorder to no avail, has anyone else has experience with this?

Answer 1

ANSWER

My solution to this problem was to create my own PDFAnnotation subclass.

var isChecked = false

init(forBounds bounds: CGRect, withProperties properties: [AnyHashable : Any]?)

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

I used the isChecked property inside of the draw function. If the property was toggled on, then I was display a checkmark image I found on Icons8. I also had to add the PDFAnnotationHitObserver in my ViewController, and handled updating the property of isChecked.