drawing dashed line using CALayer

Question

I was able to draw a dashed box, using the following code:

CAShapeLayer *shapeLayer = [CAShapeLayer layer];
CGRect shapeRect = CGRectMake(0.0f, 0.0f, 200.0f,         


        

Answer 1

Swift, more compact:

func addDashedLine(fromPoint start: CGPoint, toPoint end:CGPoint) {
    let line = CAShapeLayer()
    let linePath = UIBezierPath()
    linePath.moveToPoint(start)
    linePath.addLineToPoint(end)
    line.path = linePath.CGPath
    line.strokeColor = UIColor.redColor().CGColor
    line.lineWidth = 1
    line.lineJoin = kCALineJoinRound
    line.lineDashPattern = [4, 4]
    self.layer.addSublayer(line)
}

Answer 2

CAShapeLayer *shaplayer = [CAShapeLayer layer];
    shaplayer.frame = CGRectMake(100, 100, 100, 100);
    [self.view.layer addSublayer:shaplayer];
    UIBezierPath *uipath = [UIBezierPath bezierPath];
    [uipath moveToPoint:CGPointMake(50, 200)];
    [uipath addLineToPoint:CGPointMake(250, 200)];
    shaplayer.path = uipath.CGPath;
    shaplayer.strokeColor = [UIColor redColor].CGColor;
    shaplayer.lineDashPattern = @[@4];