Re: NSArray
Re: NSArray
- Subject: Re: NSArray
- From: Markus Spoettl <email@hidden>
- Date: Sun, 1 Jun 2008 17:21:30 -0700
On Jun 1, 2008, at 5:02 PM, Nathan wrote:
int x;
- (IBAction)addNew:(id)sender {
NSString *temp = @"Enter Todo Item Here";
[Items addObject: temp];
x=[Items count];
[label setIntValue: x];
[tableView setDataSource: Items];
[tableView reloadData];
}
"Items" is a mutable array. "label" is a label for debugging.
"tableView" is a tableview. When addNew is called, I want an object
with the value of temp added to array "items". Then the tableView
needs updating, so that it is displaying all items in the array. The
code runs, I know my connections are good, but nothing happens. So I
added the label who's connection I also know is good to make sure
the items are getting added to the array and they aren't. When the
button is pressed, no matter how many times, label always equals
zero. What's wrong?
Not sure without seeing the rest of your code but if Items is nil that
would cause exactly the behavior your are seeing. You can message nil
objects (will will not cause a crash) and the return values will
basically be some form of 0 (depending on the return type of methods),
so [Items count] will return zero.
Are you initializing Items at some point? It should be something like:
"Items = [[NSMutableArray] alloc] init];".
Regards
Markus
--
__________________________________________
Markus Spoettl
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| References: | |
| | >NSArray (From: Nathan <email@hidden>) |