ios - 属性字符串

Question

a text that has some part with yellow background我需要在黄色文本的左侧和右侧进行一些填充，并且需要将标签“3”居中。我正在为其使用属性文本。任何人都可以帮助我吗？下面是我正在使用的代码。将屏幕截图附加为好吧。

string CardTileText = "3 Shared Documents";
NSAttributedString decoratedText = CardTileText.GetAttributedStringFromHtml("#ffe601","3");


  public static NSAttributedString GetAttributedStringFromHtml(this string source, UIColor color, string identifier)
        {
            var atts = new UIStringAttributes();
            UIFont newConnFont = UIFont.FromName("NotoSans-Bold", 16);
            NSRange range = GetRangeFor(source, identifier);
            NSNumber offset = 5;

            NSMutableParagraphStyle para = new NSMutableParagraphStyle
            {
                Alignment = UITextAlignment.Left
            };
            NSMutableAttributedString attributedString = new NSMutableAttributedString(source, atts);
            attributedString.AddAttribute(UIStringAttributeKey.BackgroundColor, color, range);
            attributedString.AddAttribute(UIStringAttributeKey.ForegroundColor, UIColor.Black, range);
            attributedString.AddAttribute(UIStringAttributeKey.Font, newConnFont, range);
            attributedString.AddAttribute(UIStringAttributeKey.KerningAdjustment, offset, range);
            attributedString.AddAttribute(UIStringAttributeKey.ParagraphStyle, para, range);

            return attributedString;
        }

        static NSRange GetRangeFor(string source, string substring)
        {
            var range = new NSRange
            {
                Location = source.IndexOf(substring, StringComparison.Ordinal),
                Length = substring.Length
            };
            return range;
        }

Answer 1

恐怕唯一的解决办法是为 offset(在 KerningAdjustment 上使用)设置一个合适的值。

对比一下

• 偏移量 = 0.5

• 偏移量 = 10