ios汉字与utf8码的互换

　 //中文转成utf8

    NSString *utf8 = [@"今晚打老虎"

                     stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    //utf8转成中文

    NSString *zhongwen = [utf8 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    NSLog(@"utf8->%@",utf8);

    NSLog(@"zhongwen->%@",zhongwen);

ios汉字与utf8码的互换

原文：http://www.cnblogs.com/dopa-chenyy/p/5404447.html