Question

I’m using Cocoanetic’s pull-to-reload but with a twist: I would like the UITableView to be able to pull up, as it were, to load more data.

I customized the classes and have managed to adjust all functionality to support this. What got me stumped, basically, is where in my code to create and add the extra view.

I first tried to add it in viewDidLoad of Cocoanetic’s class (a UITableViewController):

- (void)viewDidLoad 
{
    [super viewDidLoad];
    refreshHeaderView = [[EGORefreshTableHeaderView alloc] initWithFrame:CGRectMake(0.0f, 0.0f - self.view.bounds.size.height, 320.0f, self.view.bounds.size.height)];
    refreshFooterView = [[EGORefreshTableFooterView alloc] initWithFrame:CGRectMake(0.0f, 0.0f + self.tableView.contentSize.height, 320.0f, 20.0f)];
    [self.tableView addSubview:refreshHeaderView];
    [self.tableView addSubview:refreshFooterView];
    self.tableView.showsVerticalScrollIndicator = YES;
}

This does not work, as self.tableView.contentSize.height is zero at this point, because the table hasn’t loaded it’s data yet.

Not to worry, I thought, and tried to add it in the viewDidLoad of the UITableViewController subclass I made:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // stuff
    self.model = [ListingModel listingModelWithURL:@"avalidurl" delegate:self];
    refreshFooterView = [[EGORefreshTableFooterView alloc] initWithFrame:CGRectMake(0.0f, 0.0f + self.tableView.contentSize.height, 320.0f, 20.0f)];
    [self.tableView addSubview:refreshFooterView];
}

Note I set the model first, but that also didn’t work, for the same reason. I assume the table hasn’t been layed-out yet. In frustration I gave my class a BOOL property and an addFooter method (the BOOL to make sure it’s only called once) called from tableView:cellForRowAtIndexPath: which obviously is a far cry from The Right Way™

So what would, given this scenario, be The Right Way™?

Answer 1

The solution was easier than I thought and 7KV7 actually gave me the hint I needed.

- (void)viewDidLoad
{
    [super viewDidLoad];
    // stuff
    self.model = [ListingModel listingModelWithURL:@"avalidurl" delegate:self];
    /*
     We're forcing a reload of the table here, that way the table has a
     contentSize, so adding the footerView now works correctly.
     */
    [self.tableView reloadData];
    [self addRefreshFooter];
}