我如何使一个带属性的字符串使用Swift?

I am trying to make a simple Coffee Calculator. I need to display the amount of coffee in grams. The "g" symbol for grams needs to be attached to my UILabel that I am using to display the amount. The numbers in the UILabel are changing dynamically with user input just fine, but I need to add a lower case "g" on the end of the string that is formatted differently from the updating numbers. The "g" needs to be attached to the numbers so that as the number size and position changes, the "g" "moves" with the numbers. I'm sure this problem has been solved before so a link in the right direction would be helpful as I've googled my little heart out.

I've searched through the documentation for an attributed string and I even downloded an "Attributed String Creator" from the app store, but the resulting code is in Objective-C and I am using Swift. What would be awesome, and probably helpful to other developers learning this language, is a clear example of creating a custom font with custom attributes using an attributed string in Swift. The documentation for this is very confusing as there is not a very clear path on how to do so. My plan is to create the attributed string and add it to the end of my coffeeAmount string.

var coffeeAmount: String = calculatedCoffee + attributedText

其中calculatedCoffee是一个Int转换为字符串和“attributedText”是小写的“g”与自定义字体，我试图创建。也许我做错了。任何帮助都是感激的!

当前回答

Swift 5及以上

   let attributedString = NSAttributedString(string:"targetString",
                                   attributes:[NSAttributedString.Key.foregroundColor: UIColor.lightGray,
                                               NSAttributedString.Key.font: UIFont(name: "Arial", size: 18.0) as Any])

2019-04-25 06:31:50

其他回答

斯威夫特4

let attributes = [NSAttributedStringKey.font : UIFont(name: CustomFont.NAME_REGULAR.rawValue, size: CustomFontSize.SURVEY_FORM_LABEL_SIZE.rawValue)!]

let attributedString : NSAttributedString = NSAttributedString(string: messageString, attributes: attributes)

你需要在swift 4中删除原始值

2018-04-12 08:28:46

我创建了一个在线工具来解决你的问题!你可以编写字符串并以图形化的方式应用样式，该工具会给你objective-c和swift代码来生成字符串。

Also是开源的，所以请随意扩展它并发送pr。

变压器的工具

Github

2017-11-14 12:06:26

属性可以直接设置在swift 3…

    let attributes = NSAttributedString(string: "String", attributes: [NSFontAttributeName : UIFont(name: "AvenirNext-Medium", size: 30)!,
         NSForegroundColorAttributeName : UIColor .white,
         NSTextEffectAttributeName : NSTextEffectLetterpressStyle])

然后在任何具有属性的类中使用该变量

2017-09-14 15:07:53

Objective-C 2.0示例:

myUILabel.text = @"€ 60,00";
NSMutableAttributedString *amountText = [[NSMutableAttributedString alloc] initWithString:myUILabel.text];

//Add attributes you are looking for
NSDictionary *dictionaryOfAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                        [UIFont systemFontOfSize:12],NSFontAttributeName,
                                        [UIColor grayColor],NSForegroundColorAttributeName,
                                        nil];

//Will gray color and resize the € symbol
[amountText setAttributes:dictionaryOfAttributes range:NSMakeRange(0, 1)];
myUILabel.attributedText = amountText;

2021-03-19 11:27:41

Xcode 6版本:

let attriString = NSAttributedString(string:"attriString", attributes:
[NSForegroundColorAttributeName: UIColor.lightGrayColor(), 
            NSFontAttributeName: AttriFont])

Xcode 9.3版本:

let attriString = NSAttributedString(string:"attriString", attributes:
[NSAttributedStringKey.foregroundColor: UIColor.lightGray, 
            NSAttributedStringKey.font: AttriFont])

Xcode 10, iOS 12, Swift 4:

let attriString = NSAttributedString(string:"attriString", attributes:
[NSAttributedString.Key.foregroundColor: UIColor.lightGray, 
            NSAttributedString.Key.font: AttriFont])

2014-09-30 21:15:20

我如何使一个带属性的字符串使用Swift?

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