how to add object multi NSArray in one NSMutableArray

Question

I want add object from 2 NSArray to NSMutableArray. I dont know about this.

this my code:

@interface ViewController : UITableViewController
{
    NSArray *animal;
    NSArray *color;
    NSMutableArray *all;
}


@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    animal = [[NSArray alloc]initWithObjects:@"Lion",@"Tiger",@"Dog",@"Cat",@"Sheep",@"Wolf", nil];
    color = [[NSArray alloc]initWithObjects:@"Blue",@"Red",@"Yellow",@"Green",@"Black", nil];

    all = ??? ; //how to add object from animal and color array in all 
}

Solution 1

You can use addObjectsFromArray: from NSMutableArray class

all = [[NSMutableArray alloc]init];
[all addObjectsFromArray:animal];
[all addObjectsFromArray:color];

Solution 2

Try this:

animal = [[NSArray alloc]initWithObjects:@"Lion",@"Tiger",@"Dog",@"Cat",@"Sheep",@"Wolf", nil];
color = [[NSArray alloc]initWithObjects:@"Blue",@"Red",@"Yellow",@"Green",@"Black", nil];

all = [[NSMutableArray alloc] init];
[all addObjectsFromArray:animal];
[all addObjectsFromArray:color];

Solution 3

I am using this:

all = @[animal, color];

But you must convert the array "all" from NSMutableArray to NSArray.

Solution 4

all = [[all arrayByAddingObjectsFromArray: animal] mutableCopy];
all = [[all arrayByAddingObjectsFromArray: color] mutableCopy];

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Comments

[tkanzakic]

there is an error in the initialization, you miss a '[', and you can use initWithArray avoiding one instruction

[Aravindhan]

@duDE : In fact I was sent to human verification also while answering this question. :)

[Donal]

I tried with same code.In this case my application getting crash with EXC_BAD_ACCESS