How to Create a Uilabel with Strikethrough Text

How can I create a UILabel with strikethrough text?

SWIFT 5 UPDATE CODE

let attributeString: NSMutableAttributedString = NSMutableAttributedString(string: "Your Text")
    attributeString.addAttribute(NSAttributedString.Key.strikethroughStyle, value: 2, range: NSRange(location: 0, length: attributeString.length))

then:

yourLabel.attributedText = attributeString

To make some part of string to strike then provide range

let somePartStringRange = (yourStringHere as NSString).range(of: "Text")
attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: somePartStringRange)

Objective-C

In iOS 6.0 > UILabel supports NSAttributedString

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"Your String here"];
[attributeString addAttribute:NSStrikethroughStyleAttributeName
                        value:@2
                        range:NSMakeRange(0, [attributeString length])];

Swift

let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: "Your String here")
attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: NSMakeRange(0, attributeString.length))

Definition :

- (void)addAttribute:(NSString *)name value:(id)value range:(NSRange)aRange

Parameters List:

name : A string specifying the attribute name. Attribute keys can be supplied by another framework or can be custom ones you define. For information about where to find the system-supplied attribute keys, see the overview section in NSAttributedString Class Reference.

value : The attribute value associated with name.

aRange : The range of characters to which the specified attribute/value pair applies.

Then

yourLabel.attributedText = attributeString;

For lesser than iOS 6.0 versions you need 3-rd party component to do this.
One of them is TTTAttributedLabel, another is OHAttributedLabel.

UILabel Text Strikethrough with Color

According to the NSAttributedString UIKit Additions Reference, you can set the

NSStrikethroughColorAttributeName

attribute to an UIColor of your choice.

How to strikethrough a portion of the text

Attributed strings are quite a hassle to create indeed.

This clever code extends NSAttributedString with a .composing(_:) method, I found it on GitHub (see copyright notice at the bottom): https://github.com/vincent-pradeilles/NSAttributedStringBuilder. It uses result builders (nee function builders).

@_functionBuilder
public class NSAttributedStringBuilder {
    public static func buildBlock(_ components: NSAttributedString...) -> NSAttributedString {
        let result = NSMutableAttributedString(string: "")

        return components.reduce(into: result) { (result, current) in result.append(current) }
    }
}

extension NSAttributedString {
    public class func composing(@NSAttributedStringBuilder _ parts: () -> NSAttributedString) -> NSAttributedString {
        return parts()
    }
}

With this extension, you can build your attributed string like this:

let attributedString = NSAttributedString.composing {
    NSAttributedString(string: "Buy this course for ")
    NSAttributedString(string: "$19.99", attributes: [.strikethroughStyle : NSUnderlineStyle.single.rawValue])
    NSAttributedString(string: ", $5.99")
}

Then you assign the attributed string to the UILabel's attributedText property, of course.

This should be possible to use for any attribute.

Note that it will need to be updated for Swift 5.3 (I don't have it yet) since it predates the final nomenclature of the result builder language feature. So basically you'll need to replace @_functionBuilder with @resultBuilder if I'm not mistaken.

Since this is not my code and it's released under the MIT license, I guess I have to reprint the notice here:

MIT License
Copyright (c) 2019 Vincent Pradeilles
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

UILabel Strikethrough

This is an old question and newer information is available.

Starting in iOS 6, we have NSAttributedString.

For pre iOS 6, I would look at TTTAttributedLabel

UILabel text struck through angle

All you need to do is just trim the label width to content size.

testLabel.text = "Tk 1,750"
testLabel.frame.size.width = myLabel.intrinsicContentSize.width

and then use as told by @fzh

testLabel.addSlantLine(slantLineColor: UIColor.lightGray,
                   slantLineWidth: 2,
                   startPoint: CGPoint(x: 0, y: testLabel.frame.height - 2),
                   endPoint: CGPoint(x: testLabel.frame.width, y: 2))

Note:
Trim after text update

UILabel, TextField with overstrike character

You can use NSAttributedString, and set the below attribute:

let att = NSMutableAttributedString(string: "kfill")
att.addAttribute(.kern, value: -7, range: NSRange(location: 0, length: 1))
label.attributedText = att

You can change the range and value if you wish to achieve different results.

Swift: strikethroughStyle For Label (Middle Delete Line For Label)

Use attributeString

Screenshot

Sample Image

Code

NSDictionary * attribtues = @{NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle),
                              NSStrikethroughColorAttributeName:[UIColor redColor]};
NSAttributedString * attr = [[NSAttributedString alloc] initWithString:@"label" attributes:attribtues];
self.label.attributedText = attr;