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  StackOverflow 文档
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  iOS 教程
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  UITextView
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  带有 HTML 文本的 UITextView
NSString *htmlString = @"<p> This is an <b>HTML</b> text</p>";
NSAttributedString *attributedString = [[NSMutableAttributedString alloc]
                                                        initWithData: [htmlString dataUsingEncoding:NSUnicodeStringEncoding]
                                                        options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType }
                                                        documentAttributes: nil
                                                        error: nil
                                                        ];
                _yourTextView.attributedText = attributedString;
                // If you want to modify the font
                field.font = [UIFont fontWithName:@"Raleway-Regular" size:15];