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Assertion failure in -[UITableView layoutSublayersOfLayer:]

I want to use an UISearchDisplayController on UIViewController, that includes an UITableView.
I use Autolayout. When i try to put the SearchBar (_searchBar) in the tableHeaderView with

self.tableView.tableHeaderView = _searchBar;

I get the error 'NSInternalInconsistencyException', reason: 'Auto Layout still required after executing -layoutSubviews. UITableView's implementation of -layoutSubviews needs to call super.'

Disabling Autolayout, the error disappears, but i need Autolayout...

The error appears, when I use Custom Cells or StandardCells...

The error appears, when the TableView has no rows...

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Ulli H Avatar asked Apr 11 '14 18:04

Ulli H


2 Answers

As a general solution to this problem, or at least a way of finding the cause of it:

  • Turn on exception breakpoints
  • Subclass UITableView and override layoutSublayersOfLayer:, just calling super
  • Run your app - you will stop in your new method
  • In the debugger, type po [self _autolayoutTrace]

This will show you a printout of every view in the window, with the views where auto layout has not been able to come up with a solution highlighted by asterisks or AMBIGUOUS LAYOUT. These are the views you need to investigate the constraints for.

like image 167
jrturton Avatar answered Nov 20 '22 19:11

jrturton


When adding a subview to UITableView there are some specific requirements for the subview. Consider adding the subview to another view(superview) in your controller instead of UITableView.

"Auto Layout still required after executing -layoutSubviews" with UITableViewCell subclass

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Vladimír Slavík Avatar answered Nov 20 '22 18:11

Vladimír Slavík