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PDFAnnotation with a PDFAnnotationSubtype equal to .widget does not refresh its appearance after adding it to PDFPage

After adding the annotation to PDFPage (and displayed on the screen) there is no way to update its appearance on PDFPage / PDFView .

To reproduce the problem:

  • Create a PDFAnnotation and add it to PDFPage :

     let bounds = CGRect(x: 20.0, y: 20.0, width: 200.0, height: 200.0) let annotation = PDFAnnotation(bounds: b, forType: .widget, withProperties: nil) annotation.widgetFieldType = .text annotation.backgroundColor = .gray annotation.font = .systemFont(ofSize: 18) annotation.widgetStringValue = "Test!" page.addAnnotation(annotation)

  • After it is presented in PDFPage, try editing its borders / color / background color / line value, etc.:

     annotation?.setValue("Help! SOS! Mayday!", forAnnotationKey: .widgetValue) annotation?.color = .green annotation?.bounds = CGRect(x: 0.0, y: 0.0, width: 100.0, height: 100.0)

Nothing happens.

I know the trick:

  page.removeAnnotation(annotation) page.addAnnotation(annotation)

but this is more a workaround than a real solution.

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ios swift pdfkit ios11
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