CODEWITHSUNDEEP
iosnsattributedstring
user2206906
user2206906

Reputation: 1320

Swift 3 NSAttributedString multiple attributes

just started swift 3 and I have problems with swift syntax.

i'm trying to display a simple NSAttributedString.

so 1st I set my attributes : 

let attributeFontSaySomething : [String : AnyObject] = [NSFontAttributeName : UIFont.fontSaySomething()]
let attributeColorSaySomething : [String : AnyObject] = [NSForegroundColorAttributeName : UIColor.blue]

Then I create my string : 

let attStringSaySomething = NSAttributedString(string: "Say something", attributes: self.attributeFontSaySomething)

What i would like to do is to create the string with my 2 attributes not only just one. But when i do : 

let attStringSaySomething = NSAttributedString(string: "Say something", attributes: [self.attributeFontSaySomething, self.attributeColorSaySomething])

Xcode tells me I can't and want me to change this for a literal dictionary.

How can I create my string with the 2 attributes without using a NSMutableAttributedString ?

Upvotes: 17

Views: 29942

Answers (8)

Moeez Ali
Moeez Ali

Reputation: 21

First you can initialise attributes by using

var myAttribute = [ NSAttributedString.Key.foregroundColor: UIColor.init(hexString: "#FFAEA9"), NSAttributedString.Key.font: UIFont(name: "Dubai-Medium", size: 16) ]

after that you can use it...

  let myString = "Enter default amount"
            let text = NSAttributedString(string: myString, attributes: myAttribute)
            enterCustomAmount.setAttributedTitle(text, for: .normal)

Upvotes: 0

Umit Kaya
Umit Kaya

Reputation: 5951

Some of the answers are out dated here, especially for Swift 4 and above, you can use something like:

let wholeString = "This is whole string"
let partToAttribute = "whole string"

let attributedMessage = NSMutableAttributedString(string: wholeString)
    .highlightString(with: UIColor.blue, for: partToAttribute, isBackground: true)
    .fontHighlightString(with: UIFont.makeBoldFont(size: 16), color: UIColor.white, for: partToAttribute)

titleLabel.attributedText = attributedMessage

So at the end, you apply 2 attributes which are highlightString and fontHighlightString

Upvotes: 0

Baljeet Singh
Baljeet Singh

Reputation: 453

Thanks for @vadian's answer

Update For Swift 4

let attributes : [NSAttributedStringKey : Any] = [NSAttributedStringKey(rawValue: NSAttributedStringKey.font.rawValue) : UIFont.systemFont(ofSize: 12.0), NSAttributedStringKey(rawValue: NSAttributedStringKey.foregroundColor.rawValue) : UIColor(hex:"4C0000")]

refreshControl.attributedTitle=NSAttributedString(string: "Refreshing...", attributes: attributes)

Upvotes: 3

DURGESH
DURGESH

Reputation: 2453

You can use this code for different attributes on different strings With Roboto font (For Roboto font use MDFRobotoFontLoader)

let yourAttributes = [NSForegroundColorAttributeName: UIColor.black, NSFontAttributeName: MDFRobotoFontLoader.sharedInstance().regularFont(ofSize: 20)]

let finalString =  NSMutableAttributedString(string: "", attributes: yourAttributes)

let attributeStr =  NSMutableAttributedString(string: "XYZGFDGii", attributes: yourAttributes)
       finalString.append(attributeStr)

let yourOtherAttributes = [NSForegroundColorAttributeName: UIColor.red, NSFontAttributeName: MDFRobotoFontLoader.sharedInstance().regularFont(ofSize: 24)]

let partTwo = NSMutableAttributedString(string: "hfjghlkdhkjld", attributes: yourOtherAttributes)
       finalString.append(partTwo)

This example uses Roboto font

Upvotes: 2

dirtydanee
dirtydanee

Reputation: 6151

The problem is that you are inserting two dictionaries into a dictionary, what only expects [String: Any], not [[String: Any], [String: Any]] type. You can do the following:

let attStringSaySomething = NSAttributedString(string: "Say something", attributes: [NSFontAttributeName : UIFont.fontSaySomething(), NSForegroundColorAttributeName : UIColor.blue])

You could also group the values into tuples instead of dictionaries, and insert them into your dictionary based on the key and value:

let attributeFontSaySomething = (key: NSFontAttributeName, value: UIFont.fontSaySomething())
let attributeColorSaySomething = (key: NSForegroundColorAttributeName, value: UIColor.blue)

let attStringSaySomething = NSAttributedString(string: "Say something", attributes: [attributeFontSaySomething.key : attributeFontSaySomething.value,attributeColorSaySomething.key : attributeColorSaySomething.value])

Upvotes: 0

vadian
vadian

Reputation: 285069

The main issue is that you are passing an array [attr.. , attr...] rather than one dictionary.

You need to merge the two dictionaries into one

let attributeFontSaySomething : [String : Any] = [NSFontAttributeName : UIFont.systemFont(ofSize: 12.0)]
let attributeColorSaySomething : [String : Any] = [NSForegroundColorAttributeName : UIColor.blue]

var attributes = attributeFontSaySomething
for (key, value) in attributeColorSaySomething {
    attributes(value, forKey: key)
}

let attStringSaySomething = NSAttributedString(string: "Say something", attributes: attributes)

However it might be easier to create the dictionary literally:

let attributes : [String : Any] = [NSFontAttributeName : UIFont.systemFont(ofSize: 12.0), NSForegroundColorAttributeName : UIColor.blue]

Upvotes: 26

Duncan C
Duncan C

Reputation: 131408

Just create a single dictionary with both sets of attributes:

let attributes: [String:AnyObject] = 
  [NSFontAttributeName : UIFont.fontSaySomething(), 
  NSForegroundColorAttributeName : UIColor.blue]

And then use the dictionary with both key/value pairs when creating your attributed string.

There's no built-in mechanism in Swift for combining dictionaries, but you could add an override of the + operator if you wanted to be able to add dictionaries together (You'd have to work out what to do if both dictionaries contained the same key however.)

Upvotes: 7

Poles
Poles

Reputation: 3682

Use like this:

let attStringSaySomething = NSAttributedString.init(string: "Hello", attributes: [NSFontAttributeName: UIFont.systemFont(ofSize: 16), NSForegroundColorAttributeName:UIColor.black])

Upvotes: 2

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