Where i can store multiple NSMutableArray in One Array?

Question

I have five NSMutableArray each NSMutableArray holding another object array ...I want to store all five NSMutableArray in one array...How can i do this?

    NSMutableArray *mA1 = [NSMutableArray array];
    NSMutableArray *mA2 = [NSMutableArray array];
    NSMutableArray *mA3 = [NSMutableArray array];
    NSMutableArray *mA4 = [NSMutableArray array];
    NSMutableArray *mA5 = [NSMutableArray array];

And after store all five NSMutableArray in one array ..how can i retrieve NSMutableArray from that array ....

Levi · Accepted Answer · 2016-06-13 05:53:22Z

3

Do it in a for cycle, no need to write that repeating code with 5 instantiations:

NSMurableArray *container = [NSMutableArray new];
for (int index = 0; index < 5; index++) {
     [container addObject:[NSMutableArray new]];
}

Then access them by container[2]

answered Jun 13, 2016 at 5:53

Levi

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Joshua · Accepted Answer · 2016-06-13 06:46:01Z

1

NSMutableArray *mA1 = [NSMutableArray array];
NSMutableArray *mA2 = [NSMutableArray array];
NSMutableArray *mA3 = [NSMutableArray array];
NSMutableArray *mA4 = [NSMutableArray array];
NSMutableArray *mA5 = [NSMutableArray array];


NSArray *combinedArray = [NSArray arrayWithObjects:mA1,mA2,mA3,mA4,mA5,nil];

or
NSArray *combinedArray = @[mA1,mA2,mA3,mA4,mA5]; //immutable
NSMutableArray *combinedArray = [@[mA1,mA2,mA3,mA4,mA5]mutableCopy]; // mutable

edited Jun 13, 2016 at 6:46

Joshua

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answered Jun 13, 2016 at 5:51

Fawad Masud

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Comments

Levi · Accepted Answer · 2016-06-13 05:55:47Z

0

You can do it like this. First add all your 5 array into NSMutableArray say "mainArray" like this

NSMutableArray *mainArray = [[NSMutablearray alloc]initWithObjects:mA1,mA2,mA3,mA4,mA5,nil];

this will add all 5 arrays into main array. Now to retrieve them back from array you can do like this

NSMutablearray *array = [mainArray objectAtIndex:0];//here pass index of array you want to get

or you use for loop to iterate all array from the mainArray.. Hope this will help you

edited Jun 13, 2016 at 5:55

Levi

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answered Jun 13, 2016 at 5:54

Imran Malik

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Tony · Accepted Answer · 2016-06-13 07:31:51Z

0

NSMutableArray *mA1 = [NSMutableArray array];
NSMutableArray *mA2 = [NSMutableArray array];
NSMutableArray *mA3 = [NSMutableArray array];
NSMutableArray *mA4 = [NSMutableArray array];
NSMutableArray *mA5 = [NSMutableArray array];

NSArray *yourArray = @[mA1, mA2, mA3, mA4, mA5];//yourArray store all five NSMutableArray

for (int i = 0; i < yourArray.count; i++) {
    NSMutableArray *mA = array[i];//mA is the NSMutableArray(mA1 or other).
}

edited Jun 13, 2016 at 7:31

answered Jun 13, 2016 at 6:08

Tony

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2 Comments

Joshua Over a year ago

where did you reference array?

Tony Over a year ago

@Joshua you mean reference yourArray? I foget to rename it. Now I have fixed it.

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