Tricks for improving iPhone UITableView scrolling performance?

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  1. Cache the height of the rows (the table view can request this frequently)
  2. Create a least-recently-used cache for the images used in the table (and invalidate all the inactive entries when you receive a memory warning)
  3. Draw everything in the UITableViewCell‘s drawRect: if possible avoid subviews at all costs (or if you require the standard accessibility functionality, the content view’s drawRect:)
  4. Make your UITableViewCell‘s layer opaque (same goes for the content view if you have one)
  5. Use the reusableCellIdentifier functionality as recommended by the UITableView examples/documentation
  6. Avoid gradients/complicated graphical effects that aren’t pre-baked into UIImages

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