如何将粗体和斜体字体应用于NSAttributedString？

问题描述

我尝试将我自己的HTML字符串解析为NSAttributedString，以便在UITextView中呈现。

所以，当字符串出现时：

I want to apply a distinct bold and italic font to the eventual NSAttributedString, so that if the user ever removes either the bold or italic font from it during editing, one of the remaining fonts will stay intact.

This is the main reason why I don't simply want to apply a single font style like bold-italic, as other SO answers have suggested.

解决方案

Here is my answer after looking through different sources:

UIFontDescriptor *fontDescriptor = [UIFontDescriptor preferredFontDescriptorWithTextStyle:UIFontTextStyleBody];

UIFontDescriptor *changedFontDescriptor;
NSDictionary *attributes;

uint32_t existingTraitsWithNewTrait = [fontDescriptor symbolicTraits] | UIFontDescriptorTraitBold | UIFontDescriptorTraitItalic;
changedFontDescriptor = [fontDescriptor fontDescriptorWithSymbolicTraits:existingTraitsWithNewTrait];

UIFont *updatedFont = [UIFont fontWithDescriptor:changedFontDescriptor size:0.0];

attributes = @{ NSFontAttributeName : updatedFont };

attributedString = [[NSAttributedString alloc] initWithString:yourString attributes:attributes];

这篇关于如何将粗体和斜体字体应用于NSAttributedString？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！