reuseidentifier

iPhone - What are reuseIdentifiers (UITableViewCell)?

From the official documentation: The reuse identifier is associated with a UITableViewCell object that the table-view’s delegate creates with the intent to reuse it as the basis (for performance reasons) for multiple rows of a table view. It is assigned to the cell object in initWithFrame:reuseIdentifier: and cannot be changed therea...

iPhone: How to purge a cached UITableViewCell

iPhone SDK question: Does anyone have suggestions on how to purge a cached UITableViewCell I'd like to cache these cells with reuseIdentifier. However, there are times when I need to delete or modify some of the table rows. I expect to call reloadData after the row changes. Right now, dequeueReusableCellWithIdentifier always returns th...

UITableView dequeueReusableCellWithIdentifier Theory

When apple developed the UITableView for the first iphone they had a problem in performance when scrolling through it. Then one clever engineer discovered that the cause of this was that allocation of objects comes with a price, so it came up with a way to reuse cells. "Object allocation has a performance cost, especially if the allocat...

What are the exact circumstances in which I can reuse a UITableViewCell?

What are the exact circumstances in which I can reuse a cell (using dequeueReusableCellWithIdentifier in the UITableView class)? ...