NSRangeException while changing uitableview data

I am both new here and in IOS programming, so please bear with my newbee questions for a while :]

Here is the situation of my application before my question:

I have a view in which i added 3 different subviews. (1-categories, 2-words and 3-rules) Within the categories subview I have a table of categories. (reads and writes from a categories plist and array)

According to the selected category I am changing the table ingredients for words table in the words subview. This table keeps the words the user enters for a selected category. (reads and writes from an nsmutabledictionary whose keys are the category names from the categories table and whose v开发者_如何转开发alues are arrays of strings which were pre-entered by me to the plist)

Now an example to make things clear: my categories array has: Size, Color my words array for Size category has 3 strings in it like so: "tiny" , "big", "huge" my words array for Color category has 2 strings in it like so: "red", "blue"

First when i select "Size" category, i go and fetch words within that category and when i move from categories subview to words subview i see everything inside the "Size" category correctly in my uitableview. (it prints "tiny", "big" and "huge")

But when i go back to my categories subview and select "Color" this time and go back to words subview i get a crash.

Seems like it calls tableView:cellForRowAtIndexPath: method, and i get an NSRangeException as below:

[NSMutableArray objectAtIndex:]: index 2 beyond bounds

Long story short, I want to know why the cellForRowAtIndexPath method is calling an index which is not there. Here is how inside my cellForRowAtIndexPath method looks like:

[self reinitializeWordsDictionary];
[self reinitializeWordsInSelectedCategoryArray];

static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil) {
    cell = [[[UITableViewCell alloc] 
        initWithStyle:UITableViewCellStyleDefault 
        reuseIdentifier:CellIdentifier] autorelease];
}

cell.textLabel.text = [wordsInSelectedCategoryArray objectAtIndex:indexPath.row];

return cell;

Thanks in advance for the answers,

tiw

If anyone reading this has NSRangeExceptions not thrown by cellForRowAtIndexPath, check to ensure your UITableView isn't wrongly set to "static cells" content.

Sounds to me that the - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section; method of the UITableView's data source is delivering wrong values. I would check that by setting a break point on this method and evaluate the returned values.

What are you giving back in

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;

?