I'm trying to round the top and left corners but know how to do it for iOS 11+ (cause of the easiest new feature) but can't do that for iOS 9-, could be cool if u guys could help me with that :)
Here's an image of how it looks like now without rounding -
for example for iOS 11+, I do it like this -
layer.maskedCorners = [
.layerMinXMaxYCorner,
.layerMaxXMaxYCorner
]
layer.cornerCurve = .continuous
Make a UIView extension and add the below method in it:
extension UIView {
func roundCorners(corners: UIRectCorner, radius: CGFloat) {
DispatchQueue.main.async {
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.frame = self.bounds
mask.path = path.cgPath
self.layer.mask = mask
}
}
}
And then you can round corner radius of any views from any sides.
Example:
anyView.roundCorners(corners: [.topRight, .bottomLeft, .bottomRight], radius: 20)
Note: Don't forget to set the clipsToBounds property of the view to true before using this method. Happy Coding :)
Write this method and put it wherever you need, for example in viewDidLoad:
private let cornerRadius: CGFloat = 10
private func setMaskLayers() {
if #available(iOS 11.0, *) {
yourView.clipsToBounds = true
yourView.layer.cornerRadius = cornerRadius
yourView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
} else {
let path = UIBezierPath(roundedRect: yourView.bounds, byRoundingCorners: [.topRight, .topLeft], cornerRadii: CGSize(width: cornerRadius, height: cornerRadius))
let maskLayer = CAShapeLayer()
maskLayer.path = path.cgPath
yourView.layer.mask = maskLayer
}
}
I have to set some corner radius of UIView and I set it by this code:
#IBDesignable
class MyUIviewCorner: UIView {
override func layoutSubviews() { setup() }
func setup() {
let r = self.bounds.size.height / 2
let path = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: [.topLeft, .topRight],
cornerRadii: CGSize(width: r, height: r))
let mask = CAShapeLayer()
mask.backgroundColor = UIColor.clear.cgColor
mask.path = path.cgPath
layer.borderWidth = 1.5
layer.borderColor = UIColor.red.cgColor
self.layer.mask = mask
}
}
But I get this result:
I don't understand why is there white spaces on the top corners?
If I set bottom corner radius I get this:
You shouldn't use a mask for this, you can simply use the layer.maskedCorners property.
layer.cornerRadius = r
layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
You can kind of see why if you increase the border width:
There seems to still be a filled rectangle "on top of" the rounded rectangle drawn by the created layer, covering up the rounded corner.
You can achieve what you want by just drawing with UIBezierPaths:
override func draw(_ rect: CGRect) {
let r = self.bounds.size.height / 2
let path = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: [.topLeft, .topRight],
cornerRadii: CGSize(width: r, height: r))
path.lineWidth = 1.5
UIColor.red.setStroke()
path.stroke()
}
I have a tablviewcell which has uiview in it.
Based on some logic I change the background color and make the left and right corner rounded.
I make these view corner round from cellForRowat indexPath function.
Here is my extension.
extension UIView {
func roundCorners(corners: UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.cgPath
layer.mask = mask
}
}
and how I use it
cell?.myCustomView.roundCorners(corners: [.bottomRight,.bottomLeft], radius: 10.0)
Its working fine when width of iphones is 375,
but it fails to update for device with width greater than 375.
And after scrolling the tableview, it again stretches back correctly to the desired width.
How to solve this problem ?
You want to update the path when the view changes size. In cellForRowAt the cell has not yet been fully laid-out by auto-layout.
So...
Create a UIView subclass for your "rounded corners" view (simple example):
class RoundedCornersView: UIView {
var corners: UIRectCorner = UIRectCorner()
var radius: CGFloat = 0.0
override func layoutSubviews() {
super.layoutSubviews()
let path = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.cgPath
layer.mask = mask
}
}
Now, anytime the view changes size - such as on first use or device rotation, for example - the view will automatically update the path.
Here is how you would use it in a table cell. In Storyboard, set the class of the "background view" to RoundedCornersView
class RoundedCornersView: UIView {
var corners: UIRectCorner = UIRectCorner()
var radius: CGFloat = 0.0
override func layoutSubviews() {
super.layoutSubviews()
let path = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.cgPath
layer.mask = mask
}
}
class MyTestCell: UITableViewCell {
#IBOutlet var myCustomView: RoundedCornersView!
}
Then, in cellForRowAt:
let cell = tableView.dequeueReusableCell(withIdentifier: "MyTestCell", for: indexPath) as! MyTestCell
if shouldBeRounded {
cell.myCustomView.corners = [.bottomRight, .bottomLeft]
cell.myCustomView.radius = 10.0
cell.myCustomView.backgroundColor = .green
} else {
cell.myCustomView.corners = []
cell.myCustomView.radius = 0.0
cell.myCustomView.backgroundColor = .white
}
return cell
Use this:
override func draw(_ rect: CGRect) {
super.draw(rect)
selectedView.roundCorners(corners: [.topLeft, .topRight], radius: 12.0)
}
I want only the bottom border of my imageView to be rounded. How do I do that programmatically?
Thanks for your help!
You can do this by sub-classing UIImageView:
import UIKit
class CustomImageView: UIImageView {
override public func layoutSubviews() {
super.layoutSubviews()
self.roundUpCorners([.bottomLeft, .bottomRight], radius: 30)
}
}
extension UIView {
func roundUpCorners(_ corners: UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.cgPath
self.layer.mask = mask
}
}
The result will be something like this:
I know I can round all four corners using:
myBtn.layer.cornerRadius = 8
myBtn.layer.masksToBounds = true
Since I only want to round two, I did some research and found this:
extension UIView {
func roundCorners(corners:UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.CGPath
self.layer.mask = mask
}
}
Which is called like this:
view.roundCorners([.TopLeft , .TopRight], radius: 10)
Yet this doesn't work for a UIButton. When I switch the extension to be for type UIButton and pass it a button , the output looks like this:
The question is, how do I adapt this to work on a UIButton?
Swift 4: For latest iOS 11 onwards
override func viewDidLoad() {
super.viewDidLoad()
if #available(iOS 11.0, *) {
self.viewToRound.clipsToBounds = true
viewToRound.layer.cornerRadius = 20
viewToRound.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
} else {
// Fallback on earlier versions
}
}
Earlier iOS (10,9 etc) Versions (works for iOS 11 too)
override func viewDidLayoutSubviews() {
self.viewToRound.clipsToBounds = true
let path = UIBezierPath(roundedRect: viewToRound.bounds,
byRoundingCorners: [.topRight, .topLeft],
cornerRadii: CGSize(width: 20, height: 20))
let maskLayer = CAShapeLayer()
maskLayer.path = path.cgPath
viewToRound.layer.mask = maskLayer
}
Adding Extension of UIButton:
extension UIButton{
func roundedButton(){
let maskPath1 = UIBezierPath(roundedRect: bounds,
byRoundingCorners: [.topLeft , .topRight],
cornerRadii: CGSize(width: 8, height: 8))
let maskLayer1 = CAShapeLayer()
maskLayer1.frame = bounds
maskLayer1.path = maskPath1.cgPath
layer.mask = maskLayer1
}
}
Calling in viewDidAppear/viewDidLayoutSubviews:
btnCorner.roundedButton()
Button Corner OutPut:
For swift 3 Kirit Modi's answer is changed to:
extension UIButton {
func roundedButton(){
let maskPAth1 = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: [.topLeft , .topRight],
cornerRadii:CGSize(width:8.0, height:8.0))
let maskLayer1 = CAShapeLayer()
maskLayer1.frame = self.bounds
maskLayer1.path = maskPAth1.cgPath
self.layer.mask = maskLayer1
}
}
At the start of the extension's file don't forget to add:
import UIKit
If you want an extension for a UIView with the option of rounding top or bottom corners you can use:
extension UIView {
func roundedCorners(top: Bool){
let corners:UIRectCorner = (top ? [.topLeft , .topRight] : [.bottomRight , .bottomLeft])
let maskPAth1 = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: corners,
cornerRadii:CGSize(width:8.0, height:8.0))
let maskLayer1 = CAShapeLayer()
maskLayer1.frame = self.bounds
maskLayer1.path = maskPAth1.cgPath
self.layer.mask = maskLayer1
}
}
Which is called for a button as:
myButton.roundedCorners(top: true)
iOS 11 has made it really easy to round corners. The code below rounds the top left and bottom right corners.
myView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMaxYCorner]
For swift 5 and the most flexibility
Define an extension with a roundCorners function
extension UIButton {
func roundCorners(corners: UIRectCorner, radius: Int = 8) {
let maskPath1 = UIBezierPath(roundedRect: bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(width: radius, height: radius))
let maskLayer1 = CAShapeLayer()
maskLayer1.frame = bounds
maskLayer1.path = maskPath1.cgPath
layer.mask = maskLayer1
}
}
Call the roundCorners function
myButton.roundCorners(corners: [.topLeft, .topRight])
Or with a specific radius
myButton.roundCorners(corners: [.topLeft, .topRight], radius: 20)
Update you extension to be like this:
extension UIView {
func roundCorners(corners:UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
let rect = self.bounds
mask.frame = rect
mask.path = path.cgPath
self.layer.mask = mask
}
}
The shape layer (mask) needs to know the frame
Use this Code,
let path = UIBezierPath(roundedRect:viewTo.bounds, byRoundingCorners:[.TopRight, .TopLeft], cornerRadii: CGSizeMake(20, 20))
let maskLayer = CAShapeLayer()
maskLayer.path = path.CGPath
viewTo.layer.mask = maskLayer
hope its helpful
That's what helped me
extension UIView {
func roundCorners(
corners: UIRectCorner,
radius: CGFloat
) {
let path = UIBezierPath(
roundedRect: bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(
width: radius,
height: radius
)
)
let mask = CAShapeLayer()
mask.path = path.cgPath
layer.mask = mask
}
}
Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
yourButtonOutletName.roundCorners(
corners: [.topLeft, .topRight],
radius: yourButtonOutletName.frame.height / 2
)
}
You forgot to set the frame of your shape layer:
mask.frame = layer.bounds
rounding is applied to corner's of view/Button .. , but coming to border of button , it is not applying correctly. can I have any solution for that? #
Here is the code that I have used , which is working (border) in iOS11.0 and above and not in below versions(<11.0)
if #available(iOS 11.0, *) {
self.layer.cornerRadius = radius
self.layer.maskedCorners = maskedCorners
} else {
let shapeLayer = CAShapeLayer()
shapeLayer.position = self.center
self.layer.masksToBounds = true
self.clipsToBounds = true
let bezirePath = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(width: radius, height: radius))
shapeLayer.bounds = frame
shapeLayer.path = bezirePath.cgPath
self.layer.mask = shapeLayer