How do I sort my NSSArray that contains a nested JSON string?

Question

I am receiving JSON in the following format that I parse and store in a NSArray:

{"4eb57e72c7e24c014f000000":{"_id":{"$id":"4eb57e72c7e24c014f000000"},"author":"tim","comments":[],"created":{"sec":1320517234,"usec":856000},"picture":"http://someurl.com","text":"this is a test","title":"test","type":["test"]}

How do I get it to sort by "created"? "created" has the sec which appears to be the date and usec that appears to be the time.

Any guidance will be appreciated.

How are you parsing the JSON? What kind of objects does the parser return? — rob mayoff
– rob mayoff, Commented Nov 5, 2011 at 23:31

jlehr · Accepted Answer · 2011-11-05 19:12:09Z

2

Use sortedArrayUsingFunction:context: You'll need a method that returns "Sec" from your JSON value.

Write A comparison function something like:

NSInteger intSort(id num1, id num2, void *context)
{
    int v1 = [num1 getSecFromJSONValue];
    int v2 = [num2 getSecFromJSONValue];
    if (v1 < v2)
        return NSOrderedAscending;
    else if (v1 > v2)
        return NSOrderedDescending;
    else
        return NSOrderedSame;
}

edited Nov 5, 2011 at 19:12

jlehr

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answered Nov 5, 2011 at 18:52

Owen Hartnett

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Hot Licks · Accepted Answer · 2011-11-05 18:41:32Z

0

Use one of the sortedArrayUsing... methods. Or (horror of horrors) write your own code to sort.

answered Nov 5, 2011 at 18:41

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