How to add key to NSMutableArray

Question

I have a NSMutableArray looks like this. And I want to pass this Array to another ViewController and use the elements of it. But I'm confused about how to add keys to each element. For example, {@"bus_route_key":@"733"}

Is there a way to init the Array with keys? Or should i create NSDictionary for this?

@[
 @[
  @733,
  @"Oakleigh - Box Hill via Clayton & Monash University & Mt Waverley",
  @"Oakleigh Railway Station/Johnson St",
  @"2016-04-05T11:44:00Z"
  ],
 @[
  @631,
  @"Southland - Waverley Gardens via Clayton & Monash University",
  @"Southland Shopping Centre/Karen St",
  @"2016-04-05T11:46:00Z"
  ],
 @[
  @703,
  @"Middle Brighton - Blackburn via Bentleigh & Clayton & Monash University (SMARTBUS Service)",
  @"Luntar Rd/Centre Rd",
  @"2016-04-05T11:50:00Z"
  ]
 ];

Answer 1

NSArray *mainArray = @[
 @[
  @733,
  @"Oakleigh - Box Hill via Clayton & Monash University & Mt Waverley",
  @"Oakleigh Railway Station/Johnson St",
  @"2016-04-05T11:44:00Z"
  ],
 @[
  @631,
  @"Southland - Waverley Gardens via Clayton & Monash University",
  @"Southland Shopping Centre/Karen St",
  @"2016-04-05T11:46:00Z"
  ],
 @[
  @703,
  @"Middle Brighton - Blackburn via Bentleigh & Clayton & Monash University (SMARTBUS Service)",
  @"Luntar Rd/Centre Rd",
  @"2016-04-05T11:50:00Z"
  ]
 ];

NSMutableArray *newArray = [NSMutableArray array];

for (NSArray *arr in mainArray) {

        NSDictionary *dict = @{
                               @"key1" : [arr objectAtIndex:0],
                               @"key2" : [arr objectAtIndex:1],
                               @"key3" : [arr objectAtIndex:2]
                               };

    [newArray addObject:dict];
}

DLOG(@"New Arr : %@", newArray);

//you can access by key like this

for (NSDictionary *dict in newArray) {

    DLOG(@"%@", [dict valueForKey:@"key1"]);
    DLOG(@"%@", [dict valueForKey:@"key2"]);
    DLOG(@"%@", [dict valueForKey:@"key3"]);
}

Hope it'll help you..:)