Round top corners of a UIView and add border
The mask layer doesn't get drawn, just used to compute the mask. Try:
-(void)roundCorners:(UIRectCorner)corners radius:(CGFloat)radius
{
CGRect bounds = self.bounds;
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:bounds
byRoundingCorners:corners
cornerRadii:CGSizeMake(radius, radius)];
CAShapeLayer *maskLayer = [CAShapeLayer layer];
maskLayer.frame = bounds;
maskLayer.path = maskPath.CGPath;
self.layer.mask = maskLayer;
CAShapeLayer* frameLayer = [CAShapeLayer layer];
frameLayer.frame = bounds;
frameLayer.path = maskPath.CGPath;
frameLayer.strokeColor = [UIColor redColor].CGColor;
frameLayer.fillColor = nil;
[self.layer addSublayer:frameLayer];
}
-(void)roundTopCornersRadius:(CGFloat)radius
{
[self roundCorners:(UIRectCornerTopLeft|UIRectCornerTopRight) radius:radius];
}
-(void)roundBottomCornersRadius:(CGFloat)radius
{
[self roundCorners:(UIRectCornerBottomLeft|UIRectCornerBottomRight) radius:radius];
}
The frame you're currently seeing drawn is the UITextField's normal frame, so set the frame style to none. You'll also have to adjust the insets to make up for the fact that with the frame style set to none there's normally no inset.
How to set cornerRadius for only top-left and top-right corner of a UIView?
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 layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)
}
If you don't do that it won't show up.
And to round corners, use the 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
}
}
Additional view controller case: Whether you can't or wouldn't want to subclass a view, you can still round a view. Do it from its view controller by overriding the viewWillLayoutSubviews()
function, as follows:
class MyVC: UIViewController {
/// The view to round the top-left and top-right hand corners
let theView: UIView = {
let v = UIView(frame: CGRect(x: 10, y: 10, width: 200, height: 200))
v.backgroundColor = .red
return v
}()
override func loadView() {
super.loadView()
view.addSubview(theView)
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
// Call the roundCorners() func right there.
theView.roundCorners(corners: [.topLeft, .topRight], radius: 30)
}
}
UIView with round corner and white border
Using the same layer object:
view.layer.borderWidth = 1;
view.layer.borderColor = [[UIColor whiteColor] CGColor];
How to round top two corners of UIView and add shadow above?
SWIFT 5: iOS 11 introduced maskedCorners
which results in smoother and better quality results. You can still use the UIRectCorner
in the function call and have it translated to CACornerMask
:
extension UIView {
func roundCorners(_ corners: UIRectCorner, radius: CGFloat) {
if #available(iOS 11.0, *) {
clipsToBounds = true
layer.cornerRadius = radius
layer.maskedCorners = CACornerMask(rawValue: corners.rawValue)
} else {
let path = UIBezierPath(
roundedRect: bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(width: radius, height: radius)
)
let mask = CAShapeLayer()
mask.path = path.cgPath
layer.mask = mask
}
}
func addShadow(shadowColor: CGColor = UIColor.label.cgColor,
shadowOffset: CGSize = CGSize(width: 1.0, height: 2.0),
shadowOpacity: Float = 0.4,
shadowRadius: CGFloat = 3.0) {
self.layer.shadowColor = shadowColor
self.layer.shadowOffset = shadowOffset
self.layer.shadowOpacity = shadowOpacity
self.layer.shadowRadius = shadowRadius
self.layer.masksToBounds = false
}
}
These functions need to be applied in layoutSubviews() of your superview.
override func layoutSubviews() {
roundCorners([.topLeft, .topRight], radius: 15)
addShadow(shadowColor: UIColor.text1.cgColor, shadowOffset: CGSize(width: 0, height: -3), shadowOpacity: 0.2, shadowRadius: 5)
}
UiView with top left and right rounded corners and border
Try this:
#import <QuartzCore/QuartzCore.h>
view.layer.cornerRadius = 8.0;
view.layer.borderWidth = 1.0;
view.layer.borderColor = [UIColor blueColor].CGColor;
however, it'll make all of your corners rounded. If you don't want this, there are two options:
- Draw the rounded corner yourself using CoreGraphics (How to draw a rounded rectangle in Core Graphics / Quartz 2D?) or
- Use a mask (CALayer's
@property mask
here: http://developer.apple.com/library/ios/#DOCUMENTATION/GraphicsImaging/Reference/CALayer_class/Introduction/Introduction.html)
Rounded Corners only on Top of a UIView
You can do this by setting a mask
on your view's layer:
CAShapeLayer * maskLayer = [CAShapeLayer layer];
maskLayer.path = [UIBezierPath bezierPathWithRoundedRect: self.bounds byRoundingCorners: UIRectCornerTopLeft | UIRectCornerTopRight cornerRadii: (CGSize){10.0, 10.}].CGPath;
self.layer.mask = maskLayer;
IMPORTANT: You should do this in your view's layoutSubviews()
method, so the view has already been resized from the storyboard
In Swift <= 1.2
let maskLayer = CAShapeLayer()
maskLayer.path = UIBezierPath(roundedRect: bounds, byRoundingCorners: .TopLeft | .TopRight, cornerRadii: CGSize(width: 10.0, height: 10.0)).CGPath
layer.mask = maskLayer
Swift 2.x
let maskLayer = CAShapeLayer()
maskLayer.path = UIBezierPath(roundedRect: bounds, byRoundingCorners: UIRectCorner.TopLeft.union(.TopRight), cornerRadii: CGSizeMake(10, 10)).CGPath
layer.mask = maskLayer
Swift 3.x
let maskLayer = CAShapeLayer()
maskLayer.path = UIBezierPath(roundedRect: view.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 10, height: 10)).cgPath
layer.mask = maskLayer
Round Top Corners of a UIButton in Swift
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:
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