iPhone: Do I have to (and how) release the subviews of a custom table view cell?

I have got custom TableViewCell-s where I assign several UIImageView-s and UILabel-s to the cell's contentview, like this:

[cell.contentView ad开发者_如何转开发dSubview:iconFileView];
[iconFileView release];
[cell.contentView addSubview:areaLabel];
[areaLabel release];
[cell.contentView addSubview:placeLabel];
[placeLabel release];

As I understand the cells themselves are retained by the TableView and will be released together with it. However, I do not understand do I have to remove the cell's contentview's subviews from the contentview in order for them to be released?

If the answer is yes: how do I actually do that? Is it sufficient to find all the visible cells and remove their subviews from each cell?

Neither could find an exact answer to this question in Memory Management Guide for Cocoa.

Thanks!

The contentView will take care of releasing its subviews when the cell releases the contentView. Basically, when cell's retain count goes to zero, it will send a release message to contentView. If contentView's retain count is zero, then it will send release messages to all its subviews, including iconFileView, etc. As long as you haven't sent any additional retain messages to contentView or iconFileView, etc., you should be fine.

If you want to feel really good, run your program under Leaks in Instruments. Make sure you do whatever needs to be done to cause the UITableViewCells to be released.