add data at 0th index of NSMutableArray

Question

I want to add more data at 0th index of my array. There is already an array stored at 0th index of my array. Here is the line of code where data is stored at 0th index of my array.

    if ([[albumDetailsResponse valueForKey:@"result"] isEqualToString:@"IsValidUser"]) {
        [albumURLArray addObject:[albumDetailsResponse valueForKey:@"data"]];
    }

Here, albumURLArray is a NSMutableArray and at its 0th index, the object will be stored. Now, I want to add more URL at 0th index of the same array. So, How can I achieve this?

Thanks in advance.

How to add object at first index of NSArray In this question's answer, the data is added at new index in the NSMutableArray while what I want is I want to add new data at 0th index of that array. So, my requirement is different then this question.

I think your albumURLArray is actually a dictionary. The function you are using to store the data is not supported on arrays and is a dictionary function. — Fogmeister
– Fogmeister, Commented Mar 31, 2015 at 10:39
I have already tried insetObject:atIndex: method but it didn't work. — Nirmit Dagly
– Nirmit Dagly, Commented Mar 31, 2015 at 10:44
possible duplicate of How to add object at first index of NSArray — Burhanuddin Sunelwala
– Burhanuddin Sunelwala, Commented Mar 31, 2015 at 10:54
@BurhanuddinSunelwala I have edited my question once again to explain my problem in detail. — Nirmit Dagly
– Nirmit Dagly, Commented Mar 31, 2015 at 12:05

Anuj Kumar Rai · Accepted Answer · 2015-03-31 10:51:31Z

2

if([albumURLArray count]>0)
    {
       [albumURLArray removeAllObjects];
       [albumURLArray addObject:[albumDetailsResponse  valueForKey:@"data"]];

   }

answered Mar 31, 2015 at 10:51

Anuj Kumar Rai

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Comments

Suyog Patil · Accepted Answer · 2015-03-31 10:43:58Z

1

You can create one array and use that array as the 0th Index of Your albumURLArray

For e.g

NSMutableArray *arrtemp=[[NSMutableArray alloc]init];
[arrtemp addObject:[albumDetailsResponse valueForKey:@"data"]];
[arrtemp addObject:[albumDetailsResponse valueForKey:@"URL"]];


[albumURLArray addObject:arrtemp];

To get the URL,

Use [[albumURLArray objectAtIndex:0] objectAtIndex:1]]

answered Mar 31, 2015 at 10:43

Suyog Patil

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Asaf · Accepted Answer · 2015-03-31 10:39:12Z

0

Just use:

[albumURLArray insertObject:[albumDetailsResponse valueForKey:@"data"] atIndex:0]

answered Mar 31, 2015 at 10:39

Asaf

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atulkhatri · Accepted Answer · 2015-03-31 10:40:46Z

0

[albumURLArray insertObject:[albumDetailsResponse valueForKey:@"data"] atIndex:0];

answered Mar 31, 2015 at 10:40

atulkhatri

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Sanjay Mohnani · Accepted Answer · 2015-03-31 10:43:32Z

0

You can use-

[albumURLArray insertObject:[albumDetailsResponse valueForKey:@"data"] atIndex:0];

answered Mar 31, 2015 at 10:43

Sanjay Mohnani

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Nitheesh George · Accepted Answer · 2015-03-31 10:45:47Z

0

Instead adding array to 0th Index. Add a NSMutableDictionary. And add one key for response data and an NSArray for URL's.

NSMutableDictionary * dataDictionary = [NSMutableDictionary alloc] init];
dataDictionary setValue:[albumDetailsResponse valueForKey:@"data"] forKey:@"data"];

NSMutableArray * urlArray = @[[NSURl urlWithString:@"http://someurl.com"], [NSURl urlWithString:@"http://someurl1.com"]];

dataDictionary setValue:urlArray forKey:@"URLS"];

answered Mar 31, 2015 at 10:45

Nitheesh George

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vikingosegundo · Accepted Answer · 2015-03-31 10:48:14Z

0

have already tried insetObject:atIndex: method but it didn't work.

The only three reasons it wouldn't work:

NSMutableArray isn't initialized. (i.e. albumURLArray = [@[] mutableCopy];or albumURLArray = [[NSMutableArray alloc] init];)
The index isn't correct (i.e. no item added yet but index 1 instead 0 used.)
The array is a plain NSArray

edited Mar 31, 2015 at 10:48

answered Mar 31, 2015 at 10:46

vikingosegundo

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2 Comments

Nirmit Dagly Over a year ago

1. If I'll initialize array then I will lost all the data at 0th index, which I do not want to do. 2. I want to add data after the last index and the data is contained at the 0th index of my array. 3. I have already mentioned that my array is not a simple one but it is a mutable array.

vikingosegundo Over a year ago

if it wasn't initialised before, there is no data.

Luke · Accepted Answer · 2015-03-31 13:36:50Z

0

To add an object to the front of the array, use 0 as the index:

[albumURLArray insertObject:myObject atIndex:0];

edited Mar 31, 2015 at 13:36

Luke

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answered Mar 31, 2015 at 10:41

Tanuj

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