ios - Core Data NSFetchrequest integer -

i have following scenario. have app handles data using core data. have entity called "brothers" has 3 attributes: name, status, age.

lets have 1 record on database has:

-name   ==> joe (string) -status ==> married (string) -age    ==> 28 (integer) 

i have uilabel uitextfield , button. want able type name (in case joe) on uitextfield press button , display age (in case 28) in uilabel. store age value variable type integer can make calculations later on.

below code have inside button.

nsentitydescription *entitydesc = [nsentitydescription entityforname:@"brothers" inmanagedobjectcontext:context]; nsfetchrequest *request = [[nsfetchrequest alloc]init]; [request setentity:entitydesc];  nspredicate *predicate = [nspredicate predicatewithformat:@"age %d", [self.age.text integervalue]]; [request setpredicate:predicate];  nserror *error; nsarray *integer = [context executefetchrequest:request error:&error];  self.displaylabel.text = integer; 

update #1

i updated code have inside button , able search name , display age. i'm still looking storing age integer variable can use later on.

nsentitydescription *entitydesc = [nsentitydescription entityforname:@"brothers" inmanagedobjectcontext:context]; nsfetchrequest *request = [[nsfetchrequest alloc]init]; [request setentity:entitydesc];  nspredicate *predicate = [nspredicate predicatewithformat:@"firstname %@", self.firstnametextfield.text]; [request setpredicate:predicate];  nserror *error; nsarray *integer = [context executefetchrequest:request error:&error];  if(integer.count <= 0){     self.displaylabel.text = @"no records found";  }  else {      nsstring *age;      (nsmanagedobject *object in integer) {          age = [object valueforkey:@"age"];      }     self.displaylabel.text = [nsstring stringwithformat:@"age: %@",age];                               }  } 

a predicate expression. if expression evaluates true predicate satisfied. if searching age you'd use e.g.

[nspredicate predicatewithformat:@"age = %d", [self.age.text integervalue]] 

or name:

[nspredicate predicatewithformat:@"name = %@", somenameorother] 

or both:

[nspredicate predicatewithformat:@"(name = %@) , (age = %d)", somenameorother, [self.age.text integervalue]] 

a fetch request gets actual nsmanagedobjects. you'd array of brothers. therefore want more output name:

if([array count])     self.displaylabel.text = [array[0] name]; 

or age:

...     self.displaylabel.text = [[array[0] age] stringvalue]; 

or whatever other property you're outputting.