在iOS中将HTML转换为NSAttributedString

问题描述：

我使用 UIWebView 的实例来处理一些文本和颜色正确，它给出的结果为HTML，而不是显示在 UIWebView 我想使用核心文本和 NSAttributedString 显示它。

I am using a instance of UIWebView to process some text and color it correctly, it gives the result as HTML but rather than displaying it in the UIWebView I want to display it using Core Text with a NSAttributedString.

我可以创建并绘制 NSAttributedString ，但我不确定如何转换和映射HTML

I am able to create and draw the NSAttributedString but I am unsure how I can convert and map the HTML into the attributed string.

我知道在Mac OS X NSAttributedString 下有一个 initWithHTML： 方法，但这是一个只有Mac的添加，并不适用于iOS。

I understand that under Mac OS X NSAttributedString has a initWithHTML: method but this was a Mac only addition and is not available for iOS.

我也知道有一个类似的问题，没有答案，我虽然我会再试一次，看看是否有人创造了一种方法来做到这一点，如果是，如果他们可以共享它。

I also know that there is a similar question to this but it had no answers, I though I would try again and see whether anyone has created a way to do this and if so, if they could share it.

答

在iOS 7中，UIKit添加了

In iOS 7, UIKit added an initWithData:options:documentAttributes:error: method which can initialize an NSAtttributedString using HTML, eg:

[[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding] 
                                 options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
                                           NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)} 
                      documentAttributes:nil error:nil];

在iOS中将HTML转换为NSAttributedString

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