Filter array using predicate

Question

I need to filter following array with status equal to "U" and i have used following.

 NSArray *result = [alertModified.senders filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(subscriptions.status = %@)",@"U"]];

But I'm getting empty arrays.

Please help me on filtering this?

Array String:

(senderCode =  CPFB, senderName = CPFB, forSenderLevel = 0, subscriptions = (
"correspondenceListId = 102,status = S,senderCode = AA,subject = Letter,retentionPeriod = 0, uniqueBillIdentifier = (null),senderResponseStatus = (null),subscriptionDate = ,effectiveDate = ",
"correspondenceListId = 103,status = U,senderCode = BB,subject = Nomination Letters,retentionPeriod = 0, uniqueBillIdentifier = (null),senderResponseStatus = (null),subscriptionDate = ,effectiveDate = ",
"correspondenceListId = 104,status = U,senderCode = AA,subject = Yearly statements,retentionPeriod = 0, uniqueBillIdentifier = (null),senderResponseStatus = (null),subscriptionDate = ,effectiveDate = ",
"correspondenceListId = 105,status = U,senderCode = BB,subject = All Future Letters,retentionPeriod = 0, uniqueBillIdentifier = (null),senderResponseStatus = (null),subscriptionDate = ,effectiveDate = "))

So,you need to sort **subscriptions**,or the whole string somehow? — Nikita Pestrov, Apr 16 '12 at 11:34
I don't need to sort but i need to filter out record which has status is "U", i.e. i should get only 3 record from above. Above string is representation of Object hierarchy. — lasi, Apr 16 '12 at 13:06
see this :http://stackoverflow.com/questions/958622/using-nspredicate-to-filter-an-nsarray-based-on-nsdictionary-keys — Hector, Apr 17 '12 at 05:09
Thanks Piyush, "==" didn't work and your link is sample of one level array. — lasi, Apr 17 '12 at 13:27

score 0 · Answer 1 · answered Apr 16 '12 at 15:04

0

In your example you should be filtering the subscription list itself, not the whole senders. You have to apply the filter to each sender. Try changing your filter line to this and check if it gives you results:

 NSArray *result = [[alertModified.senders objectAtIndex:0].subscriptions filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(status = %@)",@"U"]];

answered Apr 16 '12 at 15:04

Angel G. Olloqui

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Thanks Angel. But i want to iterate over nested Arrays, not within one arrays. Your code snippet filter within single list. – lasi Apr 16 '12 at 15:15

Filter array using predicate

1 Answers1