Objective C - 如何从NSAttributedString创建rtf [英] Objective C - How to create rtf from NSAttributedString

问题描述

我可以使用以下命令从rtf字符串转换为属性字符串：

I can convert from rtf string to attributed string using following:

 NSAttributedString *attributedStr = [[NSAttributedString alloc] initWithData:data options:@{NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType} documentAttributes:nil error:nil];

现在我怎么能从attributionString转换回rtf字符串？

Now how can i convert back from attributedString to rtf string?

推荐答案

你想使用-dataFromRange：documentAttributes：error：

You want to use -dataFromRange:documentAttributes:error:

NSAttributedString *str = [[NSAttributedString alloc] initWithString:@"YOLO" attributes:nil];
NSData *data = [str dataFromRange:(NSRange){0, [str length]} documentAttributes:@{NSDocumentTypeDocumentAttribute: NSRTFTextDocumentType} error:NULL];
[data writeToFile:@"/me.rtf" atomically:YES];

当然你想要一些属性而不是YOLO，但你明白了。

Of course you'd want to have some attributes instead of "YOLO", but you get the idea.

另外，如果你想简单地将它写入磁盘，那么fileWrapperFromRange：documentAttributes：error：
甚至可能是更好的选择。您可以从归因字符串编程指南

Also, if you're looking to simply write this to disk, then fileWrapperFromRange:documentAttributes:error: might even be a better option. You can find more about reading and writing from the Attributed String Programming Guide

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