拐角半径仅适用于视图的左上角和左下角

Question

I need to round corner only the top left and bottom left of a view, so i tried this:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
    let cell = tableView.dequeueReusableCell(withIdentifier: "teamCell", for: indexPath) as! TeamCell

    let view = cell.backgroundCellView
    let rectShape = CAShapeLayer()
    rectShape.bounds = (view?.frame)!
    rectShape.position = (view?.center)!
    rectShape.path = UIBezierPath(roundedRect: (view?.bounds)!, byRoundingCorners: [.topRight, .topLeft], cornerRadii: CGSize(width: 20, height: 20)).cgPath
    view?.layer.mask = rectShape
    view?.layer.masksToBounds = true

    return cell
}

and it worked very well, but after I put the constraints (trailing, leading, top and botton - i need a responsive view) only the topLeft corner is rounded and not the other. How could i fix it?

Answer 1

Starting with iOS 11, and Swift 4, you can use maskedCorners:

let myView = UIView()

myView.layer.cornerRadius = 15
myView.clipsToBounds = true

// Top Left Corner: .layerMinXMinYCorner
// Top Right Corner: .layerMaxXMinYCorner
// Bottom Left Corner: .layerMinXMaxYCorner
// Bottom Right Corner: .layerMaxXMaxYCorner
myView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMinXMaxYCorner]

Answer 2

try this one

 let path = UIBezierPath(roundedRect:viewToRound.bounds, byRoundingCorners:[.TopLeftt, .BottomLeft], cornerRadii: CGSizeMake(20, 20))
    let maskLayer = CAShapeLayer()
    maskLayer.path = path.CGPath
    view.layer.mask = maskLayer

Answer 3

A simple way to do this is to set the corner radius of your cell's content view, and then to prevent the right side corners of the contents from being rounded you could constrain them to have x trailing space to the content view (where x is your corner radius). This does require you to adjust your layout to account for the extra padding on the right side of your cells though.

Answer 4

Try using

view?.layer.cornerRadius = 15 

insted of

rectShape.path = UIBezierPath(roundedRect: (view?.bounds)!, byRoundingCorners: [.topRight, .topLeft], cornerRadii: CGSize(width: 20, height: 20)).cgPath