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);