How to create a UIImage with UIBezierPath

Question

I wrote some code to create a UIImage with UIBezierPath but it didn\'t work.

Can someone help me find out what\'s wrong with my code?

Answer 1

https://stackoverflow.com/a/17408397/3191351 Translated Into Swift

import UIKit

extension UIBezierPath {

    /** Returns an image of the path drawn using a stroke */
    func strokeImageWithColor(var strokeColor: UIColor?,var fillColor: UIColor?) -> UIImage {

        // get your bounds
        let bounds: CGRect = self.bounds

        UIGraphicsBeginImageContextWithOptions(CGSizeMake(bounds.size.width + self.lineWidth * 2, bounds.size.width + self.lineWidth * 2), false, UIScreen.mainScreen().scale)

        // get reference to the graphics context
        let reference: CGContextRef = UIGraphicsGetCurrentContext()!

        // translate matrix so that path will be centered in bounds
        CGContextTranslateCTM(reference, self.lineWidth, self.lineWidth)

        if strokeColor == nil {
            strokeColor = fillColor!;
        }
        else if fillColor == nil {
            fillColor = strokeColor!;
        }

        // set the color
        fillColor?.setFill()
        strokeColor?.setStroke()

        // draw the path
        fill()
        stroke()


        // grab an image of the context
        let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()

        UIGraphicsEndImageContext()

        return image
    }

}