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POHaving problems using NSMutableArray with NSTableView (Cocoa)
 

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  1. POHaving problems using NSMutableArray with NSTableView (Cocoa)
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    <p>I'm having a problem trying to use an NSMutableArray with a NSTableView controller in my simple ToDo list application. Adding items does not work and trying to delete items gives me the error <code>-[NSCFArray removeObjectAtIndex:]: index (0) beyond bounds (0)</code>. I can't seem to find the cause of my problem as trying to add an item returns no error and the error in removing one leads to no obvious solution. My code is as follow:</p> <p>AppController.h</p> <pre><code>// // AppController.h // ToDo // // Created by Rhys Powell on 10/01/11. // #import &lt;Cocoa/Cocoa.h&gt; #import &lt;BWToolkitFramework/BWToolkitFramework.h&gt; @interface AppController : NSObject { IBOutlet BWAnchoredButton *addButton; IBOutlet BWAnchoredButton *removeButton; IBOutlet NSMenuItem *clearAll; IBOutlet NSTableView *tableView; NSMutableArray *toDoList; } - (IBAction)addToDo:(id)sender; - (IBAction)removeToDo:(id)sender; - (IBAction)clearAllToDos:(id)sender; @end </code></pre> <p>AppController.m</p> <pre><code>// // AppController.m // ToDo // // Created by Rhys Powell on 10/01/11. // #import "AppController.h" @implementation AppController - (id)init { [super init]; NSLog(@"Initialising..."); toDoList = [[NSMutableArray arrayWithObject:@"Add a ToDo with the '+' button"] retain]; return self; } - (IBAction)addToDo:(id)sender { NSLog(@"Added a ToDo"); [toDoList addObject:@"Test"]; } - (IBAction)removeToDo:(id)sender { [toDoList removeObjectAtIndex:[tableView selectedRow]]; } - (IBAction)clearAllToDos:(id)sender { [toDoList removeAllObjects]; } - (int)numberOfRowsInTableView:(NSTableView *)tv { return [toDoList count]; } - (id)tableView:(NSTableView *)tv objectValueForTableColumn:(NSTableColumn *)tableColumn row:(int)row { return [toDoList objectAtIndex:row]; } @end </code></pre> <p>I should also note that the initial string I initialise the array with displays, but I cannot delete it or add new strings.</p>
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    1. COShow the calling code. Do you update the table view parallel to that?
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