example-paging-uitableview.m

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	
	// Return 1 section which will be used to display the giant blank UITableViewCell as defined
	// in the tableView:cellForRowAtIndexPath: method below
	if ([self.searchResults count] == 0){
		
		return 1;
		
	} else if ([self.searchResults count] < self.webServiceDataModel.total) {
				
		// Add an object to the end of the array for the "Load more..." table cell.
		return [self.searchResults count] + 1;
				
	}	
	// Return the number of rows as there are in the searchResults array.
	return [self.searchResults count];	
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
	// Special cases:
	// 1: if search results count == 0, display giant blank UITableViewCell, and disable user interaction.
	// 2: if last cell, display the "Load More" search results UITableViewCell.
	
	if ([self.searchResults count] == 0){ // Special Case 1

		// Disable user interaction for this cell.
		UITableViewCell *cell = [[[UITableViewCell alloc] init] autorelease]; 
		cell.selectionStyle = UITableViewCellSelectionStyleNone;
		return cell;
		
	} else if (indexPath.row == [self.searchResults count]){ // Special Case 2		
		
		LoadMoreSearchResultsTableViewCell *cell = (LoadMoreSearchResultsTableViewCell *) [tableView dequeueReusableCellWithIdentifier:@"LoadMoreResultsCell"];
		if (cell == nil) {
			[[NSBundle mainBundle] loadNibNamed:@"LoadMoreSearchResultsTableCell" owner:self options:nil];
			cell = self.loadMoreSearchResultsCell;
			
			self.loadMoreSearchResultsCell.loadMoreLabel.text = @"Load More Results...";
			self.loadMoreSearchResultsCell.loadMoreLabel2.text = @"";

		}
		
		// Return a standard cell
		self.loadMoreSearchResultsCell.loadMoreLabel.text = @"Load More Results...";
		self.loadMoreSearchResultsCell.loadMoreLabel2.text = @"";
		return cell;
		
	}

    static NSString *CellIdentifier = @"SearchResultsCell";

	SearchResultsTableViewCell *cell = (SearchResultsTableViewCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
		[[NSBundle mainBundle] loadNibNamed:@"SearchResultsTableCell" owner:self options:nil];
		cell = self.searchResultsCell;
    }
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	
	if ([self.searchResults count] == 0){
		return;
		
	// Special Case for the "Load More Results..." button for paging.
	} else if (indexPath.row == [self.searchResults count]) {
	
		// Register for the notification
		[[NSNotificationCenter defaultCenter] addObserver:self
												 selector:@selector(employeeDataReceived:)
													 name:@"WebServiceCallCompleted" object:nil];
		
		// Unhide the spinner, and start animating it.
		[self.loadMoreSearchResultsCell.loadMoreIndicator startAnimating];
		self.loadMoreSearchResultsCell.loadMoreLabel.text = @"";
		self.loadMoreSearchResultsCell.loadMoreLabel2.text = @"Loading...";
		
		// Start the connection...
		[self.webServiceDataModel getNextSearchResultsPage];
		
		// Disable user interaction if/when the loading/search results view appears.
		[self.tableView setUserInteractionEnabled:NO];
		
		// Unhighlight the load more button after it has been tapped.
		NSIndexPath* selection = [self.tableView indexPathForSelectedRow];
		if (selection)
			[self.tableView deselectRowAtIndexPath:selection animated:YES];

	
	} else {
	
		// Slide in the a details view.
       }
}