Passing a MutableArray between ViewControllers

Question

  BookingDocumentsViewController *bdVc = [self.storyboard instantiateViewControllerWithIdentifier:@"BookingDocs"];
    bdVc.orId = rl_id;
    bdVc.docsArray =  self.documentsArray;
    [self.navigationController pushViewController:bdVc animated:YES];

I have Above code snippet. I'm trying to load a new viewcontroller and assign its Mutable Array (docsArray) object to current view's mutableArray (documentsArray <=this is not nil)

Whenever I execute above code I get EXC_BAD_ACCESS error.

but if I comment the 3rd line. It works but I can't get my array to the new view. I even tried with [[NSMutableArray alloc] initWithArray:self.documentsArray]; this doesnt work either.

But if I use bdVc.docsArray =[[[NSMutableArray alloc] init]; it works but again I can't get my mutable array to the new view.

Edit: However 2nd line has NSString values. And they can be passed without a problem.

What am I doing wrong here?

I'm not getting any errors in console, instead I get this.

enter image description here

Are you doing something with docsArray in bdVc's viewDidLoad or viewWillAppear/viewDidAppear? Is docsArray a strong property? — NikosM
– NikosM, Commented Nov 12, 2012 at 11:53
yes docsArray is a strong property. And I'm not doing anything with docsArray in anywhere else. — Rukshan
– Rukshan, Commented Nov 12, 2012 at 11:57

empee · Accepted Answer · 2012-11-12 12:15:51Z

2

Maybe consider using a Segue. It instantiates the destination viewcontroller for you. Then in your source view controller implement

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender

Get a reference to your destination viewcontroller and set its data.

BookingDocumentsViewController *bdVc = [segue destinationViewController];
bdVc.docsArray = self.documentsArray;

answered Nov 12, 2012 at 12:15

empee

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spider1983 · Accepted Answer · 2012-11-12 12:02:54Z

0

in BookingDocumentsViewController.h

@property(nonatomic, retain)NSmutableArray *docsArray;

You do can do in your BookingDocumentsViewController.m:

@synthesize docsArray;

- (void)viewDidLoad
 {
    NSmutableArray *array = [NSmutableArray alloc]initWithArray:docsArray];   
   [super viewDidLoad];
 }

then when you are pushing the view

BookingDocumentsViewController *bdVc = [self.storyboard instantiateViewControllerWithIdentifier:@"BookingDocs"];
bdVc.orId = rl_id;
bdVc.docsArray =  self.documentsArray;
[self.navigationController pushViewController:bdVc animated:YES];
[bdVc Release];

answered Nov 12, 2012 at 12:02

spider1983

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2 Comments

Abizern Over a year ago

what is the point of creating a local array in viewDidLoad that isn't used anywhere? This is nowhere near an answer

spider1983 Over a year ago

well you can define that array in .h if you want to use it in other blocks i was just focusing on passing the array value funda...anyway will take care of that in future.

Rukshan · Accepted Answer · 2012-11-12 12:27:35Z

0

I think I found the issue. A very basic mistake. In bdVc's viewDidLoad I had the following line,

NSLog(@"Booking Documents viewDidLoad : %@",self.docsArray.count);

This was causing the error. that %@ instead of %d. I wonder why xcode didn't show proper reason for the error.

Thank you all for the help. :)

answered Nov 12, 2012 at 12:27

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