How to read a NSMutableArray out of a NSMutableDictionary

Question

I am having problems reading out a mutable array out of a mutable dictionary. I am trying to read it out, and then put it into a label. Here is how my data is organized. I have a mutable array of dictionaries. Then in my tableview I take the object at index path and set it equal to a dictionary in the app delegate. Then in the details view I load the dictionary that I took out of the array and I read from it and put the values into the labels. I have all the strings in the dictionary working, but the arrays won't read out, can you help me

RootViewController.m

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    SurveyAppAppDelegate *surveyAppAppDelegate = (SurveyAppAppDelegate*)[[UIApplication sharedApplication] delegate];

    SurveyViewer *surveyViewController = [[SurveyViewer alloc] initWithNibName:@"SurveyViewer" bundle:nil]; 
    surveyAppAppDelegate.arrayCount = [[self surveyArray] objectAtIndex:indexPath.row];


    [self.navigationController pushViewController:surveyViewController animated:YES];
    [surveyViewController release];
}

In my App Delegate it is set as NSDictionary.

Then in my detail view controller I do this

  injuredArray = [surveyAppAppDelegate.arrayCount objectForKey:@"Injured Part"];

    if ([injuredArray count] >= 1) {
        for (int i = 0; i<=([injuredArray count]-1); i++) {
            myLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 105+shift, 139, 15)];
            myLabel.text = [injuredArray objectAtIndex:i];
            myLabel.backgroundColor = [UIColor clearColor];
            myLabel.font = [UIFont fontWithName:@"Helvetica" size: 14.0];
            myLabel.textColor = [UIColor blackColor];
            myLabel.textAlignment = UITextAlignmentLeft;
            [self.theScroller addSubview:myLabel];
            shift = shift+20;
        }
    }

In my App Delegate I set up arrayCount like this

.h

#import <UIKit/UIKit.h>

    @class RootViewController;

    @interface SurveyAppAppDelegate : NSObject <UIApplicationDelegate> {
        NSDictionary *arrayCount;
    }

    @property (nonatomic, assign) NSDictionary *arrayCount;

    @end

and .m

#import "SurveyAppAppDelegate.h"
@implementation SurveyAppAppDelegate
    @synthesize arrayCount;

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {


        arrayCount = [[NSDictionary alloc] init];

Then in the dealloc of the app delegate I release it

Oh, and the objects in the NSMutableArray that I set to injuredArray are all strings

EDIT: So I added a loop to NSLog the array in the root view controller right after I set it, and it isn't working. So it looks for some reason that it isn't being saved in arrayCount correctly

Thanks for your help

Answer 1

You might consider creating an init method in your detail view controller that accepts the NSDictionary that your are interested in and retains it in a property. I cannot tell where this reference in coming from: surveyAppAppDelegate.arrayCount

Answer 2

In your appDelegate header, try retaining the dictionary instead of assigning:

@property (nonatomic, retain) NSDictionary *arrayCount;

then in implementation:

NSDictionary *anArrayCount = [[NSDictionary alloc] init];
self.arrayCount = anArrayCount;
[anArrayCount release];

Is the injuredArray object you're assigning already allocated and initialized? That could be the problem...