Subview is not displaying the drawing view

Asked May 03 '18 at 01:18

Active May 03 '18 at 15:51

Viewed 51 times

I am trying to draw an arc similar to this Draw segments from a circle or donut. If I add it on viewDidLoad then it works but when I am waiting for an API call and then trying to add in a reload Method subviews are not added. Any idea?

Thanks in advance!!!

override func reloadData() {
   self.drawCircle()
}

func drawCircle() {
        let maxArcAngle = (360 - spacingInDegree*totalLevelsRequired) / totalLevelsRequired
        var previousStartAngle = 0
        var previousEndAngle = 360-maxArcAngle
        if let rating = userRating {
            for _ in  1...totalLevelsRequired {
                let vi = MView(frame: CGRect(x:16.0,y:12.0,width:40.0,height:40.0))
                print(previousStartAngle)
                print(previousEndAngle)
                previousStartAngle = previousEndAngle - spacingInDegree
                previousEndAngle = previousStartAngle - maxArcAngle
                vi.backgroundColor = UIColor.clear
                addSubview(vi)

            }
        }

    }

edited May 03 '18 at 15:51

asked May 03 '18 at 01:18

Dhara

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try `DispathQueue.main` to update UI – Willjay May 03 '18 at 01:29
Did you draw it on main thread when waiting API call? – Yun CHEN May 03 '18 at 01:29
As @WeiJay said you are probably on a background thread and need to run on the main thread to make UI changes. – Anters Bear May 03 '18 at 01:47
Yes, I am calling on main thread. But I am releading the UI once I get API response. Other UI works fine. Exact the once which is drew is not showing – Dhara May 03 '18 at 06:42
Can you provide code for fetching data and drawing? – iosdev1111 May 03 '18 at 08:42
@Bhoomi edited the post. Using this https://stackoverflow.com/a/43481532/1099453 for drawing circle – Dhara May 03 '18 at 15:52

Subview is not displaying the drawing view

0 Answers0