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POWhere would I implement this array to pass?
 

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  1. POWhere would I implement this array to pass?
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    <p>I currently build an <code>NSMutableArray</code> in <strong>Class A.m</strong> within the <code>ViewDidLoad</code> Method.</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; //Question Array Setup and Alloc stratToolsDict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:countButton,@"count",camerButton,@"camera",videoButton,@"video",textButton,@"text",probeButton,@"probe", nil]; stratTools = [[NSMutableArray alloc] initWithObjects:@"Tools",stratToolsDict, nil]; stratObjectsDict = [[NSMutableDictionary alloc]initWithObjectsAndKeys:stratTools,@"Strat1",stratTools,@"Strat2",stratTools,@"Strat3",stratTools,@"Strat4", nil]; stratObjects = [[NSMutableArray alloc]initWithObjects:@"Strategies:",stratObjectsDict,nil]; QuestionDict = [[NSMutableDictionary alloc]initWithObjectsAndKeys:stratObjects,@"Question 1?",stratObjects,@"Question 2?",stratObjects,@"Question 3?",stratObjects,@"Question 4?",stratObjects,@"Question 5?", nil]; //add strategys to questions QuestionsList = [[NSMutableArray alloc]init]; for (int i = 0; i &lt; 1; i++) { [QuestionsList addObject:QuestionDict]; } NSLog(@"Object: %@",QuestionsList); </code></pre> <p>At the end of this method you will see QuestionsList being initialized and now I need to send this <code>Array</code> to <strong>Class B</strong>.</p> <p>So I place its <code>setters</code> and <code>getters</code> using the <code>@property</code> and <code>@Synthesize</code> method. <strong>Class A.h</strong></p> <pre><code>@property (retain, nonatomic) NSMutableDictionary *stratToolsDict; @property (retain, nonatomic) NSMutableArray *stratTools; @property (retain, nonatomic) NSMutableArray *stratObjects; @property (retain, nonatomic) NSMutableDictionary *QuestionDict; @property (retain, nonatomic) NSMutableArray *QuestionsList; </code></pre> <p><strong>Class A.m</strong></p> <pre><code>@synthesize QuestionDict; @synthesize stratToolsDict; @synthesize stratObjects; @synthesize stratTools; @synthesize QuestionsList; </code></pre> <p>I use the property method because I am going to call this variable from <strong>Class B</strong> and want to be able to assign it to another <code>NSMutableArray</code>.</p> <p>I then add the <code>@property</code> and <code>@class</code> for <strong>Class A</strong> to <strong>Class B.h</strong> as well as declare the <code>NSMutableArray</code> in the @interface.</p> <pre><code>#import "Class A.h" @class Class A; @interface Class B : UITableViewController&lt;UITableViewDataSource, UITableViewDelegate&gt;{ NSMutableArray *QuestionList; Class A *arrayQuestions; } @property Class A *arrayQuestions; </code></pre> <p>Then I call <code>NSMutableArray</code> from Class A in the Class B.m</p> <pre><code>-(id)initWithStyle:(UITableViewStyle)style { if ([super initWithStyle:style] != nil) { //Make array arrayQuestions = [[Class A alloc]init]; QuestionList = arrayQuestions.QuestionsList; </code></pre> <p>Right after this I Log the <code>NSMutableArray</code> to view values and check that they are there and it returns <code>NIL</code>.</p> <pre><code>//Log test NSLog(@"QuestionList init method: %@",QuestionList); </code></pre> <p>Info about <strong>Class B</strong>- <strong>Class B</strong> is a <code>UIPopOverController</code> for <strong>Class A</strong>, <strong>Class B</strong> has one View which holds a <code>UITableView</code> which I have to populate the results of <strong>Class A's</strong> <code>NSMutableArray</code>.</p> <p>Why is the <code>NsMutableArray</code> coming back as <code>NIL</code>? Ultimately would like some help figuring it out as well, it seems to really have me confused. Help is greatly appreciated!!</p>
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    1. USKeeano
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    1. COYour error is in believing that you can alloc/init an instance of a class and it will miraculously gain access to values in other instances of that class.
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      1. POWhere would I implement this array to pass?
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    2. COShould i use the singleton method towards solving this? for some reason this has really got me stumped. @HotLicks
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    3. CO@KeeanoMartin Singletons don't solve problems, they create global state.
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