Xcode Passing NSMutableArray from one class to another

Question

I know this question has been asked countless of times. But none of them seems to be working! Please help! I am unable to pass arrays from one class to another. Blow are my codes

firstClass has an array declared

#FirstClass.h

- (void)viewDidLoad
{
testArray = [[NSMutableArray alloc] init];
[testArray addObject:@"test"];
[testArray addObject:@"test2"];
[testArray addObject:@"test3"];

//method to pass array

TableViewController *tvc = [[TableViewController alloc] init];
tvc.getData = [[NSMutableArray alloc] init];
tvc.getData = testArray;

NSLog(@"%i", [tvc.getData count]); // returns a value n

Here i get count of 3

}

TableViewController.h

- (void)viewDidLoad
{
[super viewDidLoad];

NSLog(@"%i", [getData count]); // returns a value n

Here i get 0

//Set the title
self.navigationItem.title = @"Countries";
}

I tried

FirstClass *fc = [[FirstClass alloc] init];
getData = fc.testArray;

Doesn't work as well. I tried writing a method and calling the method from my second class.
Ended up with @interface error.
Sorry, this is my first time on objective c. Am java educated.
Please help!

skonb · Accepted Answer · 2012-04-05 06:52:18Z

3

For the second problem, why the fc.testArray does not work is that viewDidLoad is called only after the view property is called. (lazy initialization)

So it works if you do like

FirstClass *fc = [[FirstClass alloc] init];
fc.view;
getData = fc.testArray;

answered Apr 5, 2012 at 6:52

skonb

4362 silver badges4 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Hexark Over a year ago

dude thanks!! Ok another question. I ma using a JSON to populate my array in my FirstClass from another method. Thus I am declaring my arrays in that method instead of viewOnLoad. So... how do I solve this?

skonb Over a year ago

How about just calling that method: FirstClass *fc = [[FirstClass alloc] init]; getData = [fc anotherMethod];

Hexark Over a year ago

thx for your help. mind taking a look at my codes? stackoverflow.com/questions/10027336/… this is how I am working with my class

Collectives™ on Stack Overflow

Xcode Passing NSMutableArray from one class to another

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related