how to modify an array inside a child view

[initWithName]

I know how to copy array values into a child view, but how do you modify an array from within the child view?

[gabacus]

hmmm... ok, im no expert but i will give this a go...

by "child view" i assume you are talking about inheritance... so you have a super view and a sub view (or child view)

if this is the case, then your child view inherits all the methods of the super view, so if you have a method in your super view that modifies the array, then you can call that method directly from the child view

i think thats how it goes anyway...

[initWithName]

I don't have any custom methods that modify the array. I'm going to use NSMutableArray methods to add, delete, and change items.

By child view I'm talking about views that are made like this:

[self.navigationController pushViewController:detailViewController animated:YES];

After that code gets executed the view switches to the child view.

[kapps11]

ok well then thats your problem. The array does not belong to the view, but the VIEW CONTROLLER. so you could access it like this:

NSArray *newArray = [NSArray array];
self.navigationController.visibleViewController.myArray = newArray;

[initWithName]

[quote]

Originally Posted by kapps11

ok well then thats your problem. The array does not belong to the view, but the VIEW CONTROLLER. so you could access it like this:

NSArray *newArray = [NSArray array];
self.navigationController.visibleViewController.myArray = newArray;

That doesn't work. Say I created an NSMutableArray, then the code I posted above gets executed. So control transfers to another view controller. Inside that view controller I have this code:

NSLog(@"Number of students in array is %i", self.navigationController.visibleViewController.myArray.count);

It says

error: request for member 'myArray' in something not a structure or union

I don't want to access the visibleViewController I want to access the view controller that was showing before the view switched.

[kapps11]

ok well in that case things get more complicated. UINavigationController has an array property called viewControllers that has all of the viewcontrollers in it. The hard part is knowing which one is yours. You could do some sort of check like an if statement because NSObject has some functions that tell you what kind of class you are dealing with *(i cant think of them off hand) but u culd use that and an if statement and just cycle through them to find the one you're looking for and then access it that way