参考:http://blog.sina.com.cn/s/blog_a3dbd02a01012ixk.html
参考2:http://www.tuicool.com/articles/Fvqia2
NSMutableAttributedString
*attrString =[[NSMutableAttributedStringalloc]initWithString:title];
NSRange range = NSMakeRange(0, [attrString
length]);
[attrString
beginEditing];
[attrString
addAttribute:NSLinkAttributeName
value:aURL range:range];
// make the text appear in blue
[attrString
addAttribute:NSForegroundColorAttributeNamevalue:[NSColorblueColor]
range:range];
// next make the text appear with anunderline
[attrString addAttribute:NSUnderlineStyleAttributeNamevalue:[NSNumbernumberWithInteger:NSSingleUnderlineStyle]range:range];
// allow truncation
NSMutableParagraphStyle
*ps = [[NSParagraphStyledefaultParagraphStyle]
mutableCopy];
[ps setLineBreakMode:NSLineBreakByTruncatingTail];
[attrString
addAttribute:NSParagraphStyleAttributeName
value:ps range:range];
[ps
release];
[attrString
endEditing];
return [attrString autorelease];