sticky selected cell in UITableView like the new twitter ipad app?

any idea how to have the selected 开发者_如何转开发cell in UITableView sticky and remain visible while scrolling? like how the twitter ipad app works. i would like it on my splitview's uitableview.

You are probably using a UITableViewController right? This automatically deselects a selected row. To avoid this, the best option would be to use a normal UIViewController with the protocols UITableViewDelegate and UITableViewDataSource.

Building from a comment Vince made on my previous answer (since deleted since it was more of an explanation of how long and how much effort a feature like this would take rather than an attempt at answering the question).

You could store the index path of a cell when it becomes selected, and then as the cell is about to scroll offscreen (you'll need some trickery to detect this) you could retrieve the cell view returned from cellForRowAtIndexPath and set a section header view to use this cell view.

This would be a pretty monstrous hack though, and you'd need to find a way to elegantly split the table into sections in order to use the section header.

I wouldn't recommend this approach, although its a step in the right direction.