How to read this crash log?

Question

For anyone who's trying to read this question, there have been extensive discussions between me and Jonas and the question changed over the course of the discussion several times so there would be no use in restating everything we went through here. If you have problems reading a crash log please refer to this question on stackoverflow! Thank you for your understanding.

Jonas: Here's the code snippet I was referring to in my last comment:

if ([performance.favorites integerValue] == 1) {
        UIImage *starImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"fav-star" ofType:@"png"]];

        cell.favoritesImage.image = starImage;
    }
    else
    {
        cell.favoritesImage.image = nil;
    }

So if the else block is executed, would that make the [favoritesImage release] call crash if a TableViewCell that is not showing the favorites Image is being deallocated?

So I could simply instead of putting it to nil add a random image with alpha set to 0 to have the same effect but not have any memory leaks?

Answer 1

It's not always easy to "read" crash reports. The two you sent does not show up any "own coded" methods.

And you have "EXC_BAD_ACCESS", so i would pretty much say: "it's a memory release/retain issue": You might release something of the UITableView to early.

Did you check that the UITableViewCell is proper autoreleased? Are all subviews and objects within the UITableViewCell on autorelease or at least not released to 0?

More details:

1) i would never create a UITableViewCell subclass by NIB/XIB. You loose a lot of performance. I recommend you to create the UITableViewCell subclass by coding. Remember: the deflating of XIB (xml) needs time and when you scroll through a UITableView there might ugly buckings.

2) for the memory issue you have: check this: How do you load custom UITableViewCells from Xib files? autorelease is not the right thing there.