Merging Two Arrays with Same Index in Objective C

Question

I want to Merge Two Array With Same Index, This is my JSON

"tier_info": [
    {
        "tier_id": "1",
        "tier_name": "tier-1",
        "price": "3.9",
        "ios_id": "tier-1",
        "android_id": "tier-1"
    },
    {
        "tier_id": "2",
        "tier_name": "tier-2",
        "price": "4.9",
        "ios_id": "tier-2",
        "android_id": "tier-2"
    },
    {
        "tier_id": "3",
        "tier_name": "tier-3",
        "price": "5.9",
        "ios_id": "tier-3",
        "android_id": "tier-3"
    },
    {
        "tier_id": "4",
        "tier_name": "free",
        "price": "0",
        "ios_id": "free",
        "android_id": "free"
    }
]

I'm using custom picker, Now I want "tier_name" with "price" in same array index [e.g. "tier_1 : 3.9"]. Code of merging two Array:

    NSMutableArray *tierTitles = [[NSMutableArray alloc] init];
    tierTitles = [tierArray valueForKey:@"tier_name"];
    NSMutableArray *tierPrice = [[NSMutableArray alloc] init];
    tierPrice = [tierArray valueForKey:@"price"];

    NSMutableArray *combined = [[NSMutableArray alloc] init];
    for (NSUInteger i = 0; i < tierArray.count; i++) {
        [combined addObject: @{tierTitles[i]:tierPrice[i]}];
    }

and i got this

(
    {
    "tier-1" = "3.9";
},
    {
    "tier-2" = "4.9";
},
    {
    "tier-3" = "5.9";
},
    {
    free = 0;
}
)

i want it like :

  (
    "tier-1" = "3.9";
    "tier-2" = "4.9";
    "tier-3" = "5.9";
    free = 0;
  )

what am i doing wrong here..any correct way to do this?

What is your answer expected type ? It looks like an Array of Dictionary, so the previous result is ok to me — CZ54
– CZ54, Commented Jul 6, 2018 at 7:34
You want {"tier-1" = "3.9"; "tier-2" = "4.9"; "tier-3" = "5.9"; free = 0;} (aka one dictionary) not ("tier-1" = "3.9"; "tier-2" = "4.9"; "tier-3" = "5.9"; free = 0;) no? Because yours is something strange, the () in print in Objective-C are for a NSArray, and {} for a NSDictionary, and I don't know what's "tier-1" = "3.9"; in a NSArray. — Larme
– Larme, Commented Jul 6, 2018 at 7:41
i want in NSMutableArray not in NSDictionary but i got Array of Dictionary... — Ketan Odedra
– Ketan Odedra, Commented Jul 6, 2018 at 7:53
only way to get an array is create a string like "tier-1 = 3.9" that is not appropriate. — Kuldeep Tanwar
– Kuldeep Tanwar, Commented Jul 6, 2018 at 7:54

Kuldeep Tanwar · Accepted Answer · 2018-07-06 07:52:21Z

3

I think what you're asking is you need an NSDictionary that contains both name and price as key-value.You need to enumerate each object and add it to an array if the value exist :-

NSMutableArray *results=[NSMutableArray new];
for (NSDictionary *tier in tierArray]) {
    if ([tier[@"tier_name"] length] && [tier[@"price"] length]) {
        [results addObject:@{tier[@"tier_name"]:tier[@"price"]:}];
    }
}

Or create a Mutable Dictionary Like this:-

NSMutableDictionary *results=[NSMutableDictionary new];
for (NSDictionary *tier in tierArray) {
    if ([tier[@"tier_name"] length] && [tier[@"price"] length]) {
        [results setValue:tier[@"price" forKey:tier[@"tier_name"]];
    }
}

edited Jul 6, 2018 at 7:52

answered Jul 6, 2018 at 7:43

Kuldeep Tanwar

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3 Comments

Ketan Odedra Over a year ago

create a Mutable Dictionary is right but same way can i create single Array ?

Kuldeep Tanwar Over a year ago

you can create a array but which data type will you add in your array to add both your tier and price? only possible way to do it do add a dictionary with key value pari @KetanOdedra another alternative would be using a string if you want to add it to an array but i don't think it'll be useful and it'll not make any sense.

Kuldeep Tanwar Over a year ago

no problem at all, let me remove the suggestion : ) @KetanOdedra

Rakesh Patel · Accepted Answer · 2018-07-06 07:42:44Z

0

I think you should add dictionary to your combined array like as below

 [tierTitles enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    NSMutableDictionary*combinedDict = [[NSMutableDictionary alloc]init];
    [combinedDict setValue:[tierPrice objectAtIndex:idx] forKey:obj];
    [combined addObject: combinedDict];
}];

answered Jul 6, 2018 at 7:42

Rakesh Patel

1,70112 silver badges27 bronze badges

1 Comment

Ketan Odedra Over a year ago

its return same which is in my question.

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