Question

I’m reading a JSON code such as:

[{"question_id":"1",
  "trigger_value":"Yes",
  "question_text":"What is your first    name?",
  "question_type":"YN"},    
 {"question_id":"2",
  "trigger_value":"Yes",
  "question_text":"What is your second name?",
  "question_type":"YN"}
]

But once it’s set into NSMutableArray, the duplicate values are deleted. I would like to allow them to check the question_type for each question.

  NSString *question_id;
  NSString *question_text;
  NSString *question_type;

   while (dicjson = (NSDictionary*)[enumerator nextObject]) {
      question_id = [dicjson objectForKey:@"question_id"];        
     question_type = [dicjson objectForKey:@"question_type"];

     [mutjson setObject:question_id    forKey:question_type];
}    

Would you give me any idea of allowing duplicate values…?
Thanks in advance.

Answer 1

mutjson looks like a mutable dictionary and not a mutable Array.

So yes, in a dictionary object if you are setting the same key, it will overwrite the previous value.
If you need to store dictionary object, create a mutable array and add each object inside that array as a dintionary object…

NSMutableArray *results = [[NSMutableArray alloc] init];

while (dicjson = (NSDictionary*)[enumerator nextObject]) {
     question_id = [dicjson objectForKey:@"question_id"];        
     question_type = [dicjson objectForKey:@"question_type"];
     [result addObject:[NSDictionary dictionaryWithObject:question_id forKey:question_type]];
}