@objc
  func drawRectangle()
  {
      // Get the Graphics Context
      let context = UIGraphicsGetCurrentContext()

      // Set the rectangle outerline-width
      context?.setLineWidth( 5.0)

      // Set the rectangle outerline-colour
      UIColor.red.set()

      // Create Rectangle
      context?.addRect( CGRect(x: 0, y: 0, width: 100, height: 100))

      // Draw
      context?.strokePath()

  }

I have tried using this and exporting the method but the rectangle isn't displayed in the react native app