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PODebugging runtime error: 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath'
 

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  1. PODebugging runtime error: 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath'
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    <p>I'm going through the Beginning iPhone Development book &amp; stuck in chapter 9. I've spent a few hours trying to debug this error without avail:</p> <pre><code>2010-05-01 19:27:51.361 Nav2[4113:20b] *** Assertion failure in -[UITableView _createPreparedCellForGlobalRow:withIndexPath:], /SourceCache/UIKit/UIKit-984.38/UITableView.m:4709 2010-05-01 19:27:51.362 Nav2[4113:20b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath:' 2010-05-01 19:27:51.364 Nav2[4113:20b] Stack: ( ... ) </code></pre> <p>I'm not looking for help with the book, but tips for how to <em>debug</em> this error. Can I pin down which of my <code>cellForRowAtIndexPath</code> methods is the problem? And how to inspect the type? Or other things should I look at?</p> <p><strong>Edit</strong>: As requested, the code for the two suspect methods:</p> <pre><code>-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *RootViewControllerCell = @"RootViewControllerCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:RootViewControllerCell]; if (cell == nil) { cell == [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:RootViewControllerCell] autorelease]; } NSUInteger row = [indexPath row]; SecondLevelViewController *controller = [controllers objectAtIndex:row]; cell.textLabel.text = controller.title; cell.image = controller.rowImage; return cell; } </code></pre> <p>--</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString * DisclosureButtonCellIdentifier = @"DisclosureButtonCellIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: DisclosureButtonCellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier: DisclosureButtonCellIdentifier] autorelease]; } return cell; NSUInteger row = [indexPath row]; NSString *rowString = [list objectAtIndex:row]; cell.textLabel.text = rowString; cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; [rowString release]; return cell; } </code></pre>
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      1. USAlex Reynolds
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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