将自定义字体应用于从 HTML 字符串转换的属性字符串 [英] Apply Custom font to Attributed string Which Converts from HTML String

问题描述

我使用了 UITextView，其中显示了 NSAttributedString.我从服务器得到 HTML 字符串.我使用以下代码将 HTML 转换为 NSAttributedString.

I used UITextView in which i display NSAttributedString. i got HTML string from server . I converted HTML to NSAttributedString using below code.

NSMutableAttributedString *attrib = [[NSMutableAttributedString alloc]initWithData:[strHTML dataUsingEncoding:NSUTF8StringEncoding] options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,  NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)} documentAttributes:nil error:nil];

要应用字体，我尝试了以下 2 个代码.

To Apply font i tried below 2 codes.

1. 应用属性
2. 自定义字符串

要应用属性，我使用以下代码.

To Apply Attribute i use below code.

[attrib addAttribute:NSFontAttributeName
          value:myFont
          range:NSMakeRange(0, attrib.length)];

对于自定义字符串，我首先在 NSString 下创建，然后在 NSAttributedString 中转换

For Custom String first i create below NSString and then covert in NSAttributedString

NSString *strHTML = [NSString stringWithFormat:@"<span style="font-family: myFont; font-size: 12">%@</span>",@"my string"];

使用两种代码 字体更改成功.但粗体和斜体 不只应用 下划线 在 NSAttributedString 中应用.

Using both code Font changed successfully. but Bold and Italic not applied only Underline is applied in NSAttributedString.

我参考以下链接.

1. iOS 7 使用将 HTML 字符串作为 NSAttributedString 并设置字体?
2. 从html创建nsattributedstring时ios7字体大小变化
3. 如何将 html 的 CSS 添加到 NSAttributedString?

对于链接 3，我应该从服务器端应用字体和标签，然后检索 HTML 字符串吗?

for link 3 should i apply fonts and tags from server side and then retrieve HTML String?

任何帮助都会被感谢！！！

Any Help would be appriciated !!!

推荐答案

我终于得到了答案.您可以检查 larmes answer(从属性字符串中查找属性用户输入)，或者您可以简单地删除旧字体属性并使用以下代码应用新字体.

Finally i got answer. you can check larmes answer(Find attributes from attributed string that user typed) or you can simply remove old font attribute and apply new font using below code.

 NSDictionary *dictAttrib = @{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,  NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)};
 NSMutableAttributedString *attrib = [[NSMutableAttributedString alloc]initWithData:[yourHTMLString dataUsingEncoding:NSUTF8StringEncoding] options:dictAttrib documentAttributes:nil error:nil];
 [attrib beginEditing];
        [attrib enumerateAttribute:NSFontAttributeName inRange:NSMakeRange(0, attrib.length) options:0 usingBlock:^(id value, NSRange range, BOOL *stop) {
            if (value) {
                UIFont *oldFont = (UIFont *)value;
                NSLog(@"%@",oldFont.fontName);

                /*----- Remove old font attribute -----*/
                [attrib removeAttribute:NSFontAttributeName range:range];
                //replace your font with new.
                /*----- Add new font attribute -----*/
                if ([oldFont.fontName isEqualToString:@"TimesNewRomanPSMT"])
                    [attrib addAttribute:NSFontAttributeName value:font1 range:range];
                else if([oldFont.fontName isEqualToString:@"TimesNewRomanPS-BoldMT"])
                    [attrib addAttribute:NSFontAttributeName value:font2 range:range];
                else if([oldFont.fontName isEqualToString:@"TimesNewRomanPS-ItalicMT"])
                    [attrib addAttribute:NSFontAttributeName value:font3 range:range];
                else if([oldFont.fontName isEqualToString:@"TimesNewRomanPS-BoldItalicMT"])
                    [attrib addAttribute:NSFontAttributeName value:font4 range:range];
                else
                    [attrib addAttribute:NSFontAttributeName value:font5 range:range];
            }
        }];
[attrib endEditing];

谢谢.也许它会帮助你.

Thanks. Maybe it will help you.

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