Render a line graph on Apple Watch using watchOS 2

Question

I am trying to render a line/step graph on Apple Watch using watchOS 2. Unlike iOS 9, watchOS 2 doesn\'t support Quartz. It only supports Core Graphics. I tried writing some cod

Answer 1

Here's code in watchOS 3

  // Create a graphics context
        let size = CGSize(width:self.contentFrame.size.width, height:100)


        UIGraphicsBeginImageContext(size)
        let context = UIGraphicsGetCurrentContext()

        // Setup for the path appearance
        context!.setStrokeColor(UIColor.white.cgColor)
        context!.setLineWidth(4.0)

        // Draw lines
        context!.beginPath ();

        context?.move(to: CGPoint())
        context?.addLine(to: CGPoint(x: 100, y: 100))
        context?.addLine(to: CGPoint(x: 0, y: 100))
        context?.addLine(to: CGPoint(x: 100, y: 0))

        context!.strokePath();

        // Convert to UIImage
        let cgimage = context!.makeImage();
        let uiimage = UIImage(cgImage: cgimage!)

        // End the graphics context
        UIGraphicsEndImageContext()

        self.graphGroup.setBackgroundImage(uiimage)