How can I speed up a UITableView?

Question

I have a UITableView with about 400 cells in 200 sections and it\'s a little sluggish in responding to user interaction (scrolling, selecting cells.) I\'ve made sure the met

Answer 1

Reuse cells. Object allocation has a performance cost, especially if the allocation has to happen repeatedly over a short period—say, when the user scrolls a table view. If you reuse cells instead of allocating new ones, you greatly enhance table-view performance. Avoid relayout of content. When reusing cells with custom subviews, refrain from laying out those subviews each time the table view requests a cell. Lay out the subviews once, when the cell is created. Use opaque subviews. When customizing table view cells, make the subviews of the cell opaque, not transparent.