+ (NSString*)dictionaryToJson:(NSDictionary *)dic

{

    NSError *parseError = nil;

    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];

    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

}

************************************

self.dataDic = [NSDictionarydictionaryWithDictionary:responseData[@"data"]];

            NSString *jsonString = responseData[@"data"][@"visitRemarks"];

            NSError *err;

            NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

            noteArray = [NSJSONSerialization JSONObjectWithData:jsonData  options:NSJSONReadingMutableContainers error:&err];