how to Filter the Json data in ios objective c -


i have problem json parsing.
json data , want display items matched restid.
have tableview display different restaurant information , every restaurant have own comment cell comment restaurant.
so,i filter json data.
let each restaurant comment cell can own comment.

this json:

(     {     comment = "very good";     food = chicken;     name = tom;     restid = 1;     score = 4; },     {     comment = nice;     food = coffee;     name = jack;     restid = 3;     score = 3; },     {     comment = tasty;     food = pizza;     name = mary;     restid = 17;     score = 5; },     {     comment = unlike;     food = none;     name = gigi;     restid = 33;     score = 1; },     {     comment = delicious;     food = juice;     name = bruce;     restid = 45;     score = 5; } )

this code:

can display data in tableview , same data in different restaurant comment cell.

- (void)getcommentinfo:(id)sender {      dispatch_async(dispatch_get_global_queue(dispatch_queue_priority_default, 0), ^{         nsurl *url = [nsurl urlwithstring:@"http://localhost:8888/foodcomment_json.php"];          nsdata *data = [nsdata datawithcontentsofurl:url];         nsarray *comment = [nsjsonserialization jsonobjectwithdata:data options:0 error:nil];         nslog(@"comment %@",comment);          self.commentarray = [nsmutablearray arraywitharray:comment];          dispatch_async(dispatch_get_main_queue(), ^{             [self.detailcommenttableview reloaddata];         });     }); }

try this, didn't test code let me know if have problems.

nsarray *filteredarray = [comment filteredarrayusingpredicate:[nspredicate predicatewithblock:^bool(id elem, nsdictionary *bindings) {     return ([elem objectforkey:@"restid"] == <your_rest_id>) }]];

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