define a view of a circular shape with no fill and a 30 pixel stroke in swift

You can define a circular view in Swift by creating a UIView object and setting its layer property to a CAShapeLayer object that draws a circular path.

Here's an example code snippet that creates a UIView object with a circular path and a 30 pixel stroke:


main.swift
import UIKit

class CircularView: UIView {
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        // Set up the circular path
        let path = UIBezierPath(ovalIn: bounds)
        
        // Create a CAShapeLayer with the circular path
        let shapeLayer = CAShapeLayer()
        shapeLayer.path = path.cgPath
        
        // Set the stroke color and width
        shapeLayer.strokeColor = UIColor.black.cgColor
        shapeLayer.lineWidth = 30
        
        // Remove the fill color
        shapeLayer.fillColor = nil
        
        // Add the shape layer to the view's layer
        layer.addSublayer(shapeLayer)
    }
}
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You can then add this CircularView to your view hierarchy like any other UIView object, and it will draw a circular path with a 30 pixel stroke and no fill.

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