Question

wanna ask about json and dictioary also array

now i’ve json data like this

{
  data: [
          {

            featured: true,
            price: {
                        currency: "IDR",
                        amount: 5557679,
                        formatted: "Rp5.558.000"
          },
    ]
}

and this is my syntax to call this

NSArray* deals_global_json = [json objectForKey:@"data"]; //2
          if(deals_global_json!=NULL){

              for (int i=0;i<[deals_global_json count];i++){

                  NSDictionary* jsonData = [deals_global_json objectAtIndex:i];

                  NSString *featured=[jsonData objectForKey:@"featured"];
                  NSArray *price=[jsonData objectForKey:@"price"];
                  NSDictionary *formatted =[price objectAtIndex:0];


              }

and it error, how to parse price array like that?

Answer 1

This is wrong in your code:

NSDictionary *formatted =[price objectAtIndex:0];

because price is a Dictionary.

You can use:

NSString *currency = [price objectForKey:@"currency"];
NSString *amount = [price objectForKey:@"amount"];
NSString *formatted = [price objectForKey:@"formatted"];

The difference between {…} and […]:

• the first one is Object (an unordered collection of key:value pairs with the ‘:’ character separating the key and the value, comma-separated and enclosed in curly braces; the keys must be strings and should be distinct from each other);

• the second one is Array (an ordered sequence of values, comma-separated and enclosed in square brackets; the values do not need to be of the same type).

To understand, how it works, you can read more about JSON:

http://en.wikipedia.org/wiki/JSON