从NSAttributedString到NSString UTF-8

Question

My code is something like:

NSData *data = [NSKeyedArchiver archivedDataWithRootObject:[textView textStorage]];
NSString *text = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
[xml appendFormat:@">%@", text]; 

If I have NSASCIIStringEncoding string is ok. When I change NSASCIIStringEncoding to NSUTF8StringEncoding it returns null.But I need UTF-8 because my XML file where I'm appending the string is in UTF-8. Any way how to do that? Thx for reply.

Answer 1

If textView is a UITextView, and xml is a NSMutableString, you should be able to replace that code with:

[xml appendString: textView.text];

or if you need that > prefix:

[xml appendFormat:@">%@", textView.text];

NSString will keep track of the encodings. You only need to worry about the encoding later when you do something with xml (store it or send it through some web service). And then you can simply use xml.UTF8String to get a regular C-string in UTF8 format.