iOS6 and hiddenCellCache about ibaforms HOT 5 OPEN

Hey Tom,

We haven't seen anything like that under iOS6 yet but haven't specifically tested for it. How many times did you have to invoke setFormDataSource before you started seeing that behaviour?

Cheers

Sean

On 15/09/2012, at 7:34 AM, TomSwift wrote:

In my app I'm experiencing a hang with repeated form reloads. (setting the formDataSource on an instance of an IBAFormViewController repeatedly). It doesn't happen with a simple tableView reloadData, but does after repeatedly calling setFormDataSource:

I've narrowed the problem down to the hiddenCellCache. If I comment out the following in IBAFormFieldCell then the hang goes away:

(void)didMoveToWindow { if (self.window == nil) { NSAssert((self.hiddenCellCache != nil), @"Hidden cell cache should not be nil"); // [self.hiddenCellCache addSubview:self]; } }
I haven't figured out why this hack isn't working in iOS6, nor how to otherwise fix it.. By disabling it in this way the next/previous functionality will break (which actually I'm OK with in this app.)

Is anyone else experiencing this and do you have any insights?

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Typically 3. It seemed to happen most often when the number of cells exceeded the height of the screen.

I posted about this on StackOverflow, with my solution, here: http://stackoverflow.com/questions/12432781/ibaforms-issues-in-ios6

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When I ran the app in the profiler I noticed that during the hang the app was spending all of it's time in UITableViewCell layoutSubviews. That led me to this fix in IBAFormFieldCell.m:

• (void) layoutSubviews
  {
      if ( self.superview == self.hiddenCellCache )
          return;
      
      [super layoutSubviews];
  }

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Good find Tom. Did you have any custom views/cells in your form or were they all stock IBAForm cells?

On 18/09/2012, at 5:49 AM, TomSwift wrote:

When I ran the app in the profiler I noticed that during the hang the app was spending all of it's time in UITableViewCell layoutSubviews. That led me to this fix in IBAFormFieldCell.m:

(void) layoutSubviews { if ( self.superview == self.hiddenCellCache ) return; [super layoutSubviews]; }
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A mixture of both in my app. I believe for the form I was working with these were all stock.

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