My login view has a subview which has a UIActivityView and a UILabel saying "Signing In…". This subview has corners which aren't rounded. How can I make them round?
Is there any way to do it inside my xib?
Giving UIView rounded corners
Try this
#import <QuartzCore/QuartzCore.h> // not necessary for 10 years now :)
...
view.layer.cornerRadius = 5;
view.layer.masksToBounds = true;
Note: If you are trying to apply rounded corners to a UIViewController's view, it should not be applied in the view controller's constructor, but rather in -viewDidLoad, after view is actually instantiated.
Note that property only exists in iPhone 3.0, not earlier versions. –
Scintillometer
I just have to say that this was one of the most immediately satisfying answers I've ever seen on SO. Checking here first just saved me an hour of fighting with an image editor and would have made my view more brittle to color / sizing changes. Thanks! –
Tatterdemalion
Related note: anyone interested in more visual goodies (i.e. shadow) to easily apply to a UIView should check out the CALayer class reference. Most of it is as easy as setting one or two property values, like the above answer: developer.apple.com/mac/library/documentation/GraphicsImaging/… –
Tatterdemalion
I have tried this on a view that was loaded from a nib file, and it didn't work. pastie.org/964695 –
Sticky
see this link cocoabugs.blogspot.com/2010/08/… –
Evaginate
@Ben Collins (or anyone else who has this problem), make sure your view has "clip subviews" set. You can check this in interface builder. –
Hyphen
this works great BUT if you have a lot of these rounded corners in any sort of scroll view or animation (I tried using them in a UITableView) you performance will suffer greatly. Nice smooth scrolling table view quickly become choppy :( –
Gause
@EdMarty please edit your answer to include the Quartz import and the
setMasksToBounds. Long comment threads are anathema to Stackoverflow. –
Kathiekathleen @Gause : Do you know a trick to get a nice smooth scrolling - along with some rounded corners? –
Graves
doesn't seem to work in the constructor, but works fine in viewDidLoad –
Agraphia
@NerujaJoseph the only way I could get good performance was to fake rounded corners by using background images that had rounded corners. –
Gause
@Gause I actually got something to work but performance still suffers a little - not much (God thanks). Look here on this link –
Graves
Minimal changes on Swift: view.layer.cornerRadius = 5 view.layer.masksToBounds = true –
Runofthemill
in Swift4 and XCode 9 it seems to work fine without view.layer.masksToBounds = true. Sorry about stupid question, but why is that? –
Peruke
That property is to make sure that any child content doesn’t draw outside the rounded corners. –
Irritable
Also, some types of UIView subclasses already have that property turned on by default. –
Irritable
You can also use the User Defined Runtime Attributes feature of interface builder to set the key path layer.cornerRadius to a value. Make sure you include the QuartzCore library though.
This trick also works for setting layer.borderWidth however it will not work for layer.borderColor as this expects a CGColor not a UIColor.
You will not be able to see the effects in the storyboard because these parameters are evaluated at runtime.
remember to check the
Clip Subviews option in for the view IB as well –
Scrimp (or) add a Key Path: layer.masksToBounds, Type: boolean: Checked –
Edgardoedge
Set the 2 user defined runtime attributes (layer.cornerRadius and layer.masksToBounds) on the FxView in the document outline, not on its view. This answer is a lifesaver! Works for me using Xcode 12.3, without the #import <QuartzCore/QuartzCore.h> statement. –
Antimere
In Xcode 12.4 the setting to clip subviews can be found in the "Attributes inspector": It's a tickbox in the "Drawing" section and it's called "Clips to Bounds". –
Literalism
Swift
Short answer:
myView.layer.cornerRadius = 8
myView.layer.masksToBounds = true // optional
Supplemental Answer
If you have come to this answer, you have probably already seen enough to solve your problem. I'm adding this answer to give a bit more visual explanation for why things do what they do.
If you start with a regular UIView it has square corners.
let blueView = UIView()
blueView.frame = CGRect(x: 100, y: 100, width: 100, height: 50)
blueView.backgroundColor = UIColor.blueColor()
view.addSubview(blueView)
You can give it round corners by changing the cornerRadius property of the view's layer.
blueView.layer.cornerRadius = 8
Larger radius values give more rounded corners
blueView.layer.cornerRadius = 25
and smaller values give less rounded corners.
blueView.layer.cornerRadius = 3
This might be enough to solve your problem right there. However, sometimes a view can have a subview or a sublayer that goes outside of the view's bounds. For example, if I were to add a subview like this
let mySubView = UIView()
mySubView.frame = CGRect(x: 20, y: 20, width: 100, height: 100)
mySubView.backgroundColor = UIColor.redColor()
blueView.addSubview(mySubView)
or if I were to add a sublayer like this
let mySubLayer = CALayer()
mySubLayer.frame = CGRect(x: 20, y: 20, width: 100, height: 100)
mySubLayer.backgroundColor = UIColor.redColor().CGColor
blueView.layer.addSublayer(mySubLayer)
Then I would end up with
Now, if I don't want things hanging outside of the bounds, I can do this
blueView.clipsToBounds = true
or this
blueView.layer.masksToBounds = true
which gives this result:
Both clipsToBounds and masksToBounds are equivalent. It is just that the first is used with UIView and the second is used with CALayer.
See also
I would also like to add that setting the corner radius to half of the shorter side (in this case
blueView.frame.size.height/2) results in a perfectly rounded corner. –
Christinachristine Now you can use a swift category in UIView (code bellow the picture) in with @IBInspectable to show the result at the storyboard (If you are using the category, use only cornerRadius and not layer.cornerRadius as a key path.
extension UIView {
@IBInspectable var cornerRadius: CGFloat {
get {
return layer.cornerRadius
}
set {
layer.cornerRadius = newValue
layer.masksToBounds = newValue > 0
}
}
}
And if you're using a custom sub-class, Make sure to tag it with
@IBDesignable to get a live preview in IB! (More at nshipster.com/ibinspectable-ibdesignable) –
Brachium This doesn't seem to work in current XCode. The view is rounded running on the device but not in IB. –
Calabrese
A different approach than the one Ed Marty did:
#import <QuartzCore/QuartzCore.h>
[v.layer setCornerRadius:25.0f];
[v.layer setMasksToBounds:YES];
You need the setMasksToBounds for it to load all the objects from IB... i got a problem where my view got rounded, but did not have the objects from IB :/
this fixed it =D hope it helps!
how is it different? other than not using dot syntax? –
Pluckless
[v.layer setMasksToBounds:YES]; \n this line is magic, it solves my big problem –
Tratner
I wrote this when i started iOS development and didn't know there wasn't a difference between dot syntax and the bracket syntax. Therefore I wrote it as "different". My code also included the import<> that Ed Marty did not have in his original response (later edited in) and therefore my answer help people fix their problem (aka not having it imported). –
Terrie
As described in this blog post, here is a method to round the corners of a UIView:
+(void)roundView:(UIView *)view onCorner:(UIRectCorner)rectCorner radius:(float)radius
{
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds
byRoundingCorners:rectCorner
cornerRadii:CGSizeMake(radius, radius)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = view.bounds;
maskLayer.path = maskPath.CGPath;
[view.layer setMask:maskLayer];
[maskLayer release];
}
The cool part about it is that you can select which corners you want rounded up.
Rather than just providing a link to an external site, we prefer that answers be self-contained here, so I brought the relevant code from the linked blog post into your answer. People can visit the blog post for more detail, but this make sure that the content will survive if the post in question goes away. Also, you posted this answer to several different questions that didn't really ask the same thing. Those were removed, and one question was closed as a duplicate of this one. We like to have answers crafted to match each question. –
Meridel
Prescient. The blog post is 404 now. –
Impractical
This approach is Clean but it will hide any shadow effect on the view. –
Protease
You can use following custom UIView class which can also change border color and width. As this is IBDesignalbe You can change the attributes in interface builder as well.
import UIKit
@IBDesignable public class RoundedView: UIView {
@IBInspectable var borderColor: UIColor = UIColor.white {
didSet {
layer.borderColor = borderColor.cgColor
}
}
@IBInspectable var borderWidth: CGFloat = 2.0 {
didSet {
layer.borderWidth = borderWidth
}
}
@IBInspectable var cornerRadius: CGFloat = 0.0 {
didSet {
layer.cornerRadius = cornerRadius
}
}
}
I am quite new to Swift, is there's a Swift version of this? –
Roz
You need to first import header file <QuartzCore/QuartzCore.h>
#import QuartzCore/QuartzCore.h>
[yourView.layer setCornerRadius:8.0f];
yourView.layer.borderColor = [UIColor redColor].CGColor;
yourView.layer.borderWidth = 2.0f;
[yourView.layer setMasksToBounds:YES];
Don't miss to use -setMasksToBounds , otherwise the effect may not be shown.
Not need to import "QuartzCore/QuartzCore.h" –
Sassy
Yes you do need to import. –
Homiletic
@LordZsolt Maybe they changed that with iOS7, but you needn't import QuartzCore anymore. –
Gobble
view.layer.cornerRadius = 25
view.layer.masksToBounds = true
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(20, 50, 200, 200)];
view.layer.backgroundColor = [UIColor whiteColor].CGColor;
view.layer.cornerRadius = 20.0;
view.layer.frame = CGRectInset(v.layer.frame, 20, 20);
view.layer.shadowOffset = CGSizeMake(1, 0);
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowRadius = 5;
view.layer.shadowOpacity = .25;
[self.view addSubview:view];
[view release];
Applying setMasksToBounds is important. Setting a background colour and drop shadow is not. –
Knickerbockers
- SwiftUI
In SwiftUI, you can use cornerRadius modifier directly on any View you want.
For example of this question:
Text("Signing In…")
.padding(16)
.background(Color.red)
.cornerRadius(50)
Note that there is no more diamond like radius, so even if you set the cornerRadius more than half of the height, it will round smoothly.
Checkout this answer to se how to Round Specific Corners in SwiftUI
if round corner not working in viewDidload() it's better to write code in viewDidLayoutSubview()
-(void)viewDidLayoutSubviews
{
viewTextfield.layer.cornerRadius = 10.0 ;
viewTextfield.layer.borderWidth = 1.0f;
viewTextfield.layer.masksToBounds = YES;
viewTextfield.layer.shadowRadius = 5;
viewTextfield.layer.shadowOpacity = 0.3;
viewTextfield.clipsToBounds = NO;
viewTextfield.layer.shadowOffset = CGSizeMake(0.0f, 0.0f);
}
Hope this helps!
In Swift 4.2 and Xcode 10.1
let myView = UIView()
myView.frame = CGRect(x: 200, y: 200, width: 200, height: 200)
myView.myViewCorners()
//myView.myViewCorners(width: myView.frame.width)//Pass View width
view.addSubview(myView)
extension UIView {
//If you want only round corners
func myViewCorners() {
layer.cornerRadius = 10
layer.borderWidth = 1.0
layer.borderColor = UIColor.red.cgColor
layer.masksToBounds = true
}
//If you want complete round shape, enable above comment line
func myViewCorners(width:CGFloat) {
layer.cornerRadius = width/2
layer.borderWidth = 1.0
layer.borderColor = UIColor.red.cgColor
layer.masksToBounds = true
}
}
Swift 4 - Using IBDesignable
@IBDesignable
class DesignableView: UIView {
}
extension UIView
{
@IBInspectable
var cornerRadius: CGFloat {
get {
return layer.cornerRadius
}
set {
layer.cornerRadius = newValue
}
}
}
I'm sorry, but as a newcomer to IOS development. How does the solution prevent
layer.cornerRadius from being returned to the original state? (e.i. how does xcode's storyboard know how to set cornerRadius only after the original UIView is initialized)? –
Foist Please import Quartzcore framework then you have to set setMaskToBounds to TRUE this the very important line.
Then: [[yourView layer] setCornerRadius:5.0f];
UIView* viewWithRoundedCornersSize(float cornerRadius,UIView * original)
{
// Create a white border with defined width
original.layer.borderColor = [UIColor yellowColor].CGColor;
original.layer.borderWidth = 1.5;
// Set image corner radius
original.layer.cornerRadius =cornerRadius;
// To enable corners to be "clipped"
[original setClipsToBounds:YES];
return original;
}
Do this programatically in obj c
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(20, 50, 200, 200)];
view.layer.backgroundColor = [UIColor whiteColor].CGColor;
view.layer.cornerRadius = 20.0;
view.layer.frame = CGRectInset(v.layer.frame, 20, 20);
[view.layer.shadowOffset = CGSizeMake(1, 0);
view.layer.shadowColor = [[UIColor blackColor] CGColor];
view.layer.shadowRadius = 5;
view.layer.shadowOpacity = .25;][1]
[self.view addSubview:view];
We Can Also do this from stoaryboard.
layer.cornerRadius Number 5
set cornerRadious Property for round View
set masksToBounds Boolean Value for image will not still be drawn outside the corner radius boundary
view.layer.cornerRadius = 5;
view.layer.masksToBounds = YES;
You can also use an image:
UIImage *maskingImage = [UIImage imageNamed:@"bannerBarBottomMask.png"];
CALayer *maskingLayer = [CALayer layer];
maskingLayer.frame = CGRectMake(-(self.yourView.frame.size.width - self.yourView.frame.size.width) / 2
, 0
, maskingImage.size.width
, maskingImage.size.height);
[maskingLayer setContents:(id)[maskingImage CGImage]];
[self.yourView.layer setMask:maskingLayer];
Using UIView Extension:
extension UIView {
func addRoundedCornerToView(targetView : UIView?)
{
//UIView Corner Radius
targetView!.layer.cornerRadius = 5.0;
targetView!.layer.masksToBounds = true
//UIView Set up boarder
targetView!.layer.borderColor = UIColor.yellowColor().CGColor;
targetView!.layer.borderWidth = 3.0;
//UIView Drop shadow
targetView!.layer.shadowColor = UIColor.darkGrayColor().CGColor;
targetView!.layer.shadowOffset = CGSizeMake(2.0, 2.0)
targetView!.layer.shadowOpacity = 1.0
}
}
Usage:
override func viewWillAppear(animated: Bool) {
sampleView.addRoundedCornerToView(statusBarView)
}
ON Xcode 6 Your try
self.layer.layer.cornerRadius = 5.0f;
or
self.layer.layer.cornerRadius = 5.0f;
self.layer.clipsToBounds = YES;
© 2022 - 2024 — McMap. All rights reserved.
cornerRadiusproperty to the table using Interface Builder only, without having to use either pre-rendered images or set it in the code. – Knickerbockers