iOS Kanji string array phonetic sorting

iOS does not provide a simple Chinese pinyin sorting method, see the OC method on the Internet, here write the following Swift method

in as  nsstring        as  nsstring        =          Cfstringconvertencodingtonsstringencoding (cfstringencoding (CFStringEncodings.GB_18030_2000.rawValue))        = nsstr1.stringbyaddingpercentescapesusingencoding (encode)!          = nsstr2.stringbyaddingpercentescapesusingencoding (encode)!        return temp1.compare (temp2) = = nscomparisonresult.orderedascending    }

The OC method links are as follows:

Http://bbs.9ria.com/thread-230144-1-1.html

iOS Kanji string array phonetic sorting