How do I create a round cornered UILabel on the iPhone?
IosObjective CCocoa TouchUilabelRounded CornersIos Problem Overview
Is there a built in way to create round-cornered UILabels? If the answer is no, how would one go about creating such an object?
Ios Solutions
Solution 1 - Ios
iOS 3.0 and later
iPhone OS 3.0 and later supports the cornerRadius
property on the CALayer
class. Every view has a CALayer
instance that you can manipulate. This means you can get rounded corners in one line:
view.layer.cornerRadius = 8;
You will need to #import <QuartzCore/QuartzCore.h>
and link to the QuartzCore framework to get access to CALayer's headers and properties.
Before iOS 3.0
One way to do it, which I used recently, is to create a UIView subclass which simply draws a rounded rectangle, and then make the UILabel or, in my case, UITextView, a subview inside of it. Specifically:
- Create a
UIView
subclass and name it something likeRoundRectView
. - In
RoundRectView
'sdrawRect:
method, draw a path around the bounds of the view using Core Graphics calls like CGContextAddLineToPoint() for the edges and and CGContextAddArcToPoint() for the rounded corners. - Create a
UILabel
instance and make it a subview of the RoundRectView. - Set the frame of the label to be a few pixels inset of the RoundRectView's bounds. (For example,
label.frame = CGRectInset(roundRectView.bounds, 8, 8);
)
You can place the RoundRectView on a view using Interface Builder if you create a generic UIView and then change its class using the inspector. You won't see the rectangle until you compile and run your app, but at least you'll be able to place the subview and connect it to outlets or actions if needed.
Solution 2 - Ios
For devices with iOS 7.1 or later, you need to add:
yourUILabel.layer.masksToBounds = YES;
yourUILabel.layer.cornerRadius = 8.0;
Solution 3 - Ios
For Swift IOS8 onwards based on OScarsWyck answer:
yourUILabel.layer.masksToBounds = true
yourUILabel.layer.cornerRadius = 8.0
Solution 4 - Ios
- you have an
UILabel
called:myLabel
. - in your "m" or "h" file import:
#import <QuartzCore/QuartzCore.h>
- in your
viewDidLoad
write this line:self.myLabel.layer.cornerRadius = 8;
- depends on how you want you can change cornerRadius value from 8 to other number :)
Good luck
Solution 5 - Ios
You can make rounded border with width of border of any control in this way:-
CALayer * l1 = [lblName layer];
[l1 setMasksToBounds:YES];
[l1 setCornerRadius:5.0];
// You can even add a border
[l1 setBorderWidth:5.0];
[l1 setBorderColor:[[UIColor darkGrayColor] CGColor]];
Just replace lblName
with your UILabel
.
Note:- Don't forget to import <QuartzCore/QuartzCore.h>
Solution 6 - Ios
I made a swift UILabel
subclass to achieve this effect. In addition I automatically set the text color to either black or white for maximal contrast.
Result
Used SO-Posts:
- How to draw border around a UILabel?
- Add a border outside of a UIView
- Check if UIColor is dark or bright?
Playground
Just paste this into an iOS Playground:
//: Playground - noun: a place where people can play
import UIKit
class PillLabel : UILabel{
@IBInspectable var color = UIColor.lightGrayColor()
@IBInspectable var cornerRadius: CGFloat = 8
@IBInspectable var labelText: String = "None"
@IBInspectable var fontSize: CGFloat = 10.5
// This has to be balanced with the number of spaces prefixed to the text
let borderWidth: CGFloat = 3
init(text: String, color: UIColor = UIColor.lightGrayColor()) {
super.init(frame: CGRectMake(0, 0, 1, 1))
labelText = text
self.color = color
setup()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}
func setup(){
// This has to be balanced with the borderWidth property
text = " \(labelText)".uppercaseString
// Credits to https://stackoverflow.com/a/33015915/784318
layer.borderWidth = borderWidth
layer.cornerRadius = cornerRadius
backgroundColor = color
layer.borderColor = color.CGColor
layer.masksToBounds = true
font = UIFont.boldSystemFontOfSize(fontSize)
textColor = color.contrastColor
sizeToFit()
// Credits to https://stackoverflow.com/a/15184257/784318
frame = CGRectInset(self.frame, -borderWidth, -borderWidth)
}
}
extension UIColor {
// Credits to https://stackoverflow.com/a/29044899/784318
func isLight() -> Bool{
var green: CGFloat = 0.0, red: CGFloat = 0.0, blue: CGFloat = 0.0, alpha: CGFloat = 0.0
self.getRed(&red, green: &green, blue: &blue, alpha: &alpha)
let brightness = ((red * 299) + (green * 587) + (blue * 114) ) / 1000
return brightness < 0.5 ? false : true
}
var contrastColor: UIColor{
return self.isLight() ? UIColor.blackColor() : UIColor.whiteColor()
}
}
var label = PillLabel(text: "yellow", color: .yellowColor())
label = PillLabel(text: "green", color: .greenColor())
label = PillLabel(text: "white", color: .whiteColor())
label = PillLabel(text: "black", color: .blackColor())
Solution 7 - Ios
Swift 3
If you want rounded label with background color, in addition to most of the other answers, you need to set layer
's background color as well. It does not work when setting view
background color.
label.layer.cornerRadius = 8
label.layer.masksToBounds = true
label.layer.backgroundColor = UIColor.lightGray.cgColor
If you are using auto layout, want some padding around the label and do not want to set the size of the label manually, you can create UILabel subclass and override intrinsincContentSize
property:
class LabelWithPadding: UILabel {
override var intrinsicContentSize: CGSize {
let defaultSize = super.intrinsicContentSize
return CGSize(width: defaultSize.width + 12, height: defaultSize.height + 8)
}
}
To combine the two you will also need to set label.textAlignment = center
, otherwise the text would be left aligned.
Solution 8 - Ios
xCode 7.3.1 iOS 9.3.2
_siteLabel.layer.masksToBounds = true;
_siteLabel.layer.cornerRadius = 8;
Solution 9 - Ios
If you want rounded corner of UI objects like (UILabel
, UIView
, UIButton
, UIImageView
) by storyboard then set clip to bounds
true and set User Defined Runtime Attributes
Key path as
layer.cornerRadius
, type = Number and value = 9 (as your requirement)
Solution 10 - Ios
Another method is to place a png behind the UILabel. I have views with several labels that overlay a single background png that has all the artwork for the individual labels.
Solution 11 - Ios
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
label.text = @"Your String.";
label.layer.cornerRadius = 8.0;
[self.view addSubview:label];
Solution 12 - Ios
> Works fine in Xcode 8.1.2 with Swift 3
.cornerRadius
is the key property to set rounded edges. If you are using the same style for all labels in your application, I would recommend for an extension method.
Code:
// extension Class
extension UILabel {
// extension user defined Method
func setRoundEdge() {
let myGreenColor = (UIColor(red: -0.108958, green: 0.714926, blue: 0.758113, alpha: 1.0))
//Width of border
self.layer.borderWidth = 1.0
//How much the edge to be rounded
self.layer.cornerRadius = 5.0
// following properties are optional
//color for border
self.layer.borderColor = myGreenColor.cgColor
//color for text
self.textColor = UIColor.red
// Mask the bound
self.layer.masksToBounds = true
//clip the pixel contents
self.clipsToBounds = true
}
}
Output:
Why Extension method?
Create a Swift file and add the following code, which has the Extention method to the "UILabel" class, where this method is user defined but will work for all the label in your application and will help to maintain consistency and clean code, if you change any style in future require only in the extension method.
Solution 13 - Ios
Did you try using the UIButton
from the Interface builder (that has rounded corners) and experimenting with the settings to make it look like a label. if all you want is to display static text within.
Solution 14 - Ios
In Monotouch / Xamarin.iOS I solved the same problem like this:
UILabel exampleLabel = new UILabel(new CGRect(0, 0, 100, 50))
{
Text = "Hello Monotouch red label"
};
exampleLabel.Layer.MasksToBounds = true;
exampleLabel.Layer.CornerRadius = 8;
exampleLabel.Layer.BorderColor = UIColor.Red.CGColor;
exampleLabel.Layer.BorderWidth = 2;
Solution 15 - Ios
Works perfect in Swift 2.0
@IBOutlet var theImage: UIImageView! //you can replace this with any UIObject eg: label etc
override func viewDidLoad() {
super.viewDidLoad()
//Make sure the width and height are same
self.theImage.layer.cornerRadius = self.theImage.frame.size.width / 2
self.theImage.layer.borderWidth = 2.0
self.theImage.layer.borderColor = UIColor.whiteColor().CGColor
self.theImage.clipsToBounds = true
}
Solution 16 - Ios
Depending on what exactly you are doing you could make an image and set it as the background programatically.