Quote:
Originally Posted by Mick
I am trying to allow the user of my software to empty out an array/UITableview (delete all items in the array and update the tableview that displays the array at the same time). I have managed to empty the array (actually a mutable array) with this:
I know it properly removes everything, because the array gets saved to a propertylist/file when the application closes, and upon reloading I can see the data was in fact deleted. However, the application crashes (sooner or later - doesn't always happen right away) if I try to scroll the tableview after emptying it, and I'm sure this is because I am not updating the tableview properly after emptying the array. I think I need to use a line like this:
to update the tableview, but I really don't understand how to use this method. I think I understand what an indexPath is, but how do I set up an array of them to make sure all data is deleted?
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That is most likely not your problem.
If you remove the contents of the array you use as data source you would probably call [myTableView reloadData]. This causes the table view to ask for how many rows there are now (0). So it will just draw a blank table.
The method you mention is good for animating the removal of single rows. So the pattern usually is: remove from NSArray, then make the table animate the removal.
I suspect your problem is that you are accessing memory that was previously released.
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Oliver Drobnik
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