title: Checking a null value from Json response in Objective-C
body: <pre><code>[
    {
      "AT" : null,
      "EA" : null,
      "AD2" : "",
      "OP" : null,
      "AdsLst" : [
  
      ],
      "EMs" : null,
      "ND" : {
        "MN" : null,
        "FN" : "Sony",
        "LN" : "J"
      },
      "ZP" : "23456",
      "CT" : 1,
      "PP" : 0,
      "cId" : 161464,
      "Pos" : null,
      "WPExt" : null,
      "OS" : 0,
      "HP" : "(345) 678-7890",
      "BTTC" : 0,
      "PWD" : null,
      "UId" : 627,
      "DId" : 0,
      "UN" : null,
      "CY" : "Salt lake",
      "Comp" : null,
      "PMC" : 0,
      "AEa" : null,
      "AnD" : null,
      "DOB" : "1\/05\/1979",
      "IDel" : false,
      "ST" : "UH",
      "AD" : "2345 Symonds street",
      "Mob" : null,
      "WP" : "(234) 324-6576",
      "PL" : 0,
      "Potcus" : false
    },
    {
      "AT" : null,
      "EA" : null,
      "AD2" : "",
      "OP" : null,
      "AdsLst" : [
  
      ],
      "EMs" : null,
      "ND" : {
        "MN" : null,
        "FN" : "Augustine",
        "LN" : "Gomes"
      },
      "ZP" : "43567",
      "CT" : 1,
      "PP" : 0,
      "cId" : 161466,
      "Pos" : null,
      "WPExt" : null,
      "OS" : 0,
      "HP" : "(456) 457-6588",
      "BTTC" : 0,
      "PWD" : null,
      "UId" : 627,
      "DId" : 0,
      "UN" : null,
      "CY" : "test",
      "Comp" : null,
      "PMC" : 0,
      "AEa" : null,
      "AnD" : null,
      "DOB" : null,
      "IDel" : false,
      "ST" : "AZ",
      "AD" : "2345 test",
      "Mob" : null,
      "WP" : "(678) 987-0890",
      "PL" : 0,
      "Potcus" : false
    },
    {
      "AT" : null,
      "EA" : null,
      "AD2" : "",
      "OP" : null,
      "AdsLst" : [
  
      ],
      "EMs" : null,
      "ND" : {
        "MN" : null,
        "FN" : "Jenny",
        "LN" : "X"
      },
      "ZP" : "45678",
      "CT" : 1,
      "PP" : 0,
      "cId" : 161467,
      "Pos" : null,
      "WPExt" : null,
      "OS" : 0,
      "HP" : "(435) 644-6545",
      "BTTC" : 0,
      "PWD" : null,
      "UId" : 627,
      "DId" : 0,
      "UN" : null,
      "CY" : "Sallas",
      "Comp" : null,
      "PMC" : 0,
      "AEa" : null,
      "AnD" : null,
      "DOB" : null,
      "IDel" : false,
      "ST" : "TX",
      "AD" : "2433 Main street",
      "Mob" : null,
      "WP" : "(657) 656-8798",
      "PL" : 0,
      "Potcus" : false
    },
    {
      "AT" : null,
      "EA" : null,
      "AD2" : "",
      "OP" : null,
      "AdsLst" : [
  
      ],
      "EMs" : null,
      "ND" : {
        "MN" : null,
        "FN" : "BLVD Cont F1",
        "LN" : "Blvd Contact L1"
      },
      "ZP" : "",
      "CT" : 1,
      "PP" : 0,
      "cId" : 161473,
      "Pos" : null,
      "WPExt" : null,
      "OS" : 0,
      "HP" : null,
      "BTTC" : 0,
      "PWD" : null,
      "UId" : 627,
      "DId" : 0,
      "UN" : null,
      "CY" : "",
      "Comp" : null,
      "PMC" : 0,
      "AEa" : null,
      "AnD" : null,
      "DOB" : null,
      "IDel" : false,
      "ST" : "",
      "AD" : "",
      "Mob" : null,
      "WP" : null,
      "PL" : 0,
      "Potcus" : false
    },
  </code></pre>
  
  <p>In this response just i want to display "FN","LN","CT","PP","cId","Pos","AT","EA","AD2" these tag value.... then which is null value just want to display "Apple"....</p>
  
  <p>Can anyone help me</p>
  
  <p>my code is</p>
  
  <pre><code>- (void)connectionDidFinishLoading:(NSURLConnection *)connection
  {
  
      NSError *error;
      json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&amp;error];
      NSLog(@"json.... %@",json);
  
  
      id jsonObject = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:nil];
  
      NSLog(@"jsonObject=%@", jsonObject);
  
      NSDictionary *checkArray=[jsonObject valueForKey:@"ND"];
  
  
      cheDisk=[checkArray valueForKey:@"FN"];
      cheDisk1=[checkArray valueForKey:@"LN"];
  
      NSLog(@"FN =%@",cheDisk);
      NSLog(@"LN =%@",cheDisk1);
  
  }
  </code></pre>