Filter JSON items in NSMutableArray

Question

I have a little problem, I have a json feed and I would like to display in an array that items whose Country = France How to do ? Thank you
(Objective-C)
My JSON :

    { 
  "menu": "Fichier", 
  "commandes": [ 
      {
          "country": "France", 
          "city": "Paris"
      }, 
      {
          "country": "USA", 
          "city": "New York"
      }, 
      {
          "country": "Canada",
          "city": "Quebec"
      }
   ] 
}

Please check this link and I hope it helps [Filtering the NSMutableArray](http://stackoverflow.com/questions/110332/filtering-nsarray-into-a-new-nsarray-in-objective-c) — Pradheep Narendran P, Jan 21 '16 at 13:39

score 1 · Answer 1 · answered Jan 21 '16 at 13:31

First parse your JSON data using NSJSONSerialization

// data will be your Json NSData

 NSError* jsonError;
 NSDictionary* jsonDictn = [NSJSONSerialization JSONObjectWithData:data
                             options:kNilOptions
                             error:&error];
 NSMutableArray * aray = [[jsonDictn objectForKey:@"commandes"] mutableCopy];
 for (NSDictionary* tmpdictn in aray) {
     NSString * tmpstr = [tmpdictn objectForKey:@"country"];
     if (![tmpstr isEqualToString:@"France"]) {
         [aray removeObject:tmpdictn];
      }
 }
 NSLog(@"aray: %@",aray);

If you have already created Array and just want to add filter that use NSPredicate, this code is to get only France Array from actual Json. — Dilip Manek, Jan 21 '16 at 14:06

score 0 · Answer 2 · edited Jan 21 '16 at 15:18

0

This will help:

NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"commandes" ascending:TRUE];
[sourceArr sortUsingDescriptors:[NSArray arrayWithObjects:sortDescriptor, nil]];

edited Jan 21 '16 at 15:18

user3071284

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answered Jan 21 '16 at 13:28

Maulik shah

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Crazy Developer · Accepted Answer · 2016-01-21T13:45:44.253

0

you need to use NSPredicate to search data from array

use below code

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"country == %@", @"France"];
NSArray *filteredArray = [[arr objectForKey:@"commandes"] filteredArrayUsingPredicate:predicate];

edited Jan 21 '16 at 13:45

answered Jan 21 '16 at 13:35

Crazy Developer

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Is it possible to get array while I pass "Fra" and get a "France" object? – Pramod Tapaniya Jan 07 '17 at 11:19
No, This predicate will not work for this kind of query. You need to look for contain kind of predicate. – Crazy Developer Jan 09 '17 at 09:21

Filter JSON items in NSMutableArray

3 Answers3