Comments on: Custom UITableViewCell from a XIB in Interface Builder

By: Mahboud

Mahboud — Mon, 23 Nov 2009 02:32:40 +0000

Or you can instantiate this way (using an IBOutlet):

HighScoresTableCell *cell = (HighScoresTableCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
// refresh the outlet
[[NSBundle mainBundle] loadNibNamed:@”HighScoresTableCell” owner:self options:nil];
cell = highScoresTableCell; // get the object from the outlet
highScoresTableCell = nil; // make sure this can’t be re-used accidentally
}

// Set up the cell…

By: bdunagan

bdunagan — Sat, 08 Aug 2009 05:20:09 +0000

Great! Glad it worked for you. It’s true that it doesn’t reuse the cells until an existing one goes off the screen and a new one is needed. That confused me at first as well. And thanks for the link; much more detail in that post.

By: haiku

haiku — Fri, 07 Aug 2009 04:02:17 +0000

hmm. tried to put a link in that last post: “http://humblecoder.blogspot.com/2009/05/iphone-tutorial-creating-table-cells-in.html” perhaps?

By: haiku

haiku — Fri, 07 Aug 2009 04:01:48 +0000

Ah! indicates that there is no re-use until there is one for every visible row in the table! very good.

By: haiku

haiku — Fri, 07 Aug 2009 03:55:18 +0000

I think that if you set a breakpoint you will find that your cell is not actually being reused in either case. At least they do not seem to be in the tests I’ve done. Most sample code that is doing this on the net is reloading the cell from the nib/xib file every time because the dequeue cell command is failing even though the cell has a reuseIdentifier (which is supposed to trigger it to be reused). They are not getting added to the _reusableTableCells dictionary in the table view for some reason.

If you can confirm that your solution doesn’t have this problem, I’d be interested to hear that.

By: bdunagan

bdunagan — Mon, 29 Jun 2009 13:55:39 +0000

Interesting. Thanks for the pointer!

By: Brendan

Brendan — Mon, 29 Jun 2009 02:00:24 +0000

The top level object has previously changed between SDK version.

If you change the File Proxy in the custom cell NIB to the tables controller, you can define one property in the table controller for the cell, and link it in the NIB. Hence when you call loadNibNamed, since the owner is self, the property will be set,
giving access to the custom cell.
Have a look at:
http://iphonedevbook.com/forum/viewtopic.php?f=14&t=27

https://devforums.apple.com/thread/3469?start=0&tstart=0