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So I register my cell:
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"Cell"]; - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } // setting up the cell } The issue is I can't set the cell.detailTextLabel.text property. The cell is never nil.
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dequeueReusableCellWithIdentifier: Returns a reusable table-view cell object after locating it by its identifier.
dequeueReusableCellWithIdentifier . Instead of creating every single cell and then selectively displaying them, we only create a handful of cells, enough to fill the screen and a little more. As we scroll, we reuse the cells offscreen, leading to a much more memory efficient task.
DequeueReusableCell(NSString) Returns a reusable table view cell that was created with the given ReuseIdentifier. DequeueReusableCell(String) Returns a reusable table view cell that was created with the given ReuseIdentifier.
Basically it's designing your cell, The cellforrowatindexpath is called for each cell and the cell number is found by indexpath.row and section number by indexpath.section . Here you can use a label, button or textfied image anything that you want which are updated for all rows in the table.
Application developers should prefer the use of DequeueReusableCell (NSString, NSIndexPath), which returns a UITableViewCell that is properly sized for the index path. Returns a reusable table view cell that was created with the given ReuseIdentifier.
The solution to the issue above is what we’ve been using all along! dequeueReusableCellWithIdentifier. Instead of creating every single cell and then selectively displaying them, we only create a handful of cells, enough to fill the screen and a little more. As we scroll, we reuse the cells offscreen, leading to a much more memory efficient task.
The visual representation of a single row in a table view. A UITableViewCell object is a specialized type of view that manages the content of a single table row. You use cells primarily to organize and present your app’s custom content, but UITableViewCell provides some specific customizations to support table-related behaviors, including:
A table view maintains a queue or list of UITableViewCell objects that the data source has marked for reuse. Call this method from your data source object when asked to provide a new cell for the table view. This method dequeues an existing cell if one is available or creates a new one using the class or nib file you previously registered.
If called first, table view registerClass will cause dequeueReusableCellWithIdentifier to return non-nil cell if the cell reuse identifier matches.
I believe registerClass is generally used for cells that will be a custom cell derived from UITableViewCell. Your custom cell can overrite initWithStyle and set the style there.
It's not always necessary to create a custom cell.
If you want to set the cell style then don't call registerClass.
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