Question

I’m quite new to iphone development. I created To-Do List app using coredata. so, my table view dynamically updating.
I want to add table view row textlabels to a NSMutable array (that means row1 text label to 1st index position of MutableArray , row2 text label to 2nd index position of Array)

this is my table view cellfor indexpath method

- (UITableViewCell *)tableView:(UITableView *)theTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *HeroTableViewCell = @"HeroTableViewCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:HeroTableViewCell];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:HeroTableViewCell] autorelease];
    }
    NSManagedObject *oneHero = [self.fetchedResultsController objectAtIndexPath:indexPath];
    NSInteger tab = [tabBar.items indexOfObject:tabBar.selectedItem];
    switch (tab) {
        case kByName:
            cell.textLabel.text = [oneHero valueForKey:@"name"];
            cell.detailTextLabel.text = [oneHero valueForKey:@"secretIdentity"];
            break;
        case kBySecretIdentity:
            cell.detailTextLabel.text = [oneHero valueForKey:@"name"];
            cell.textLabel.text = [oneHero valueForKey:@"secretIdentity"];
        default:
            break;
    }


    //listData = [[[NSMutableArray alloc] init]autorelease];

    //if(indexPath.row==1){
             //[listData addObject: cell.textLabel.text];


    return cell;
}

commented lines are how I’m try to do it. But I’m struggle to add those data as I want.
Please help me

Answer 1

Have the line listData = [[[NSMutableArray alloc] init]]; some where out of the cellForRowAtIndexPath: method, so that it won’t be reallocated every time a cell loads. And you can have the line [listData addObject: [oneHero valueForKey:@"secretIdentity"]];
where it is now currently.

Edit: Better you can do this at some method, like viewDidLoad:, to make sure all elements are added to the array.

listData = [[[NSMutableArray alloc] init]];

for (NSManagedObject *oneHero in [self.fetchedResultsController allObjects]) {

    [listData addObject: [oneHero valueForKey:@"secretIdentity"]];
}