Flickering issues about luexpandabletableview HOT 11 CLOSED

Hello ! I'm glad that you're using it.

Please set estimatedRowHeight and estimatedSectionHeaderHeight to a value that's appropriate to the heights of rows and headers. If I remember correctly, default one is 60 for both, but yours are taller.

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Did just that, I set them at 196 before the video was recorded. It s not because of that.

I changed the row animation from fade to none. Maybe because of that?

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You can try changing animation, even playing a little bit with that value to be more precisely with their real height. Also please check constraints, maybe you have some ambiguous constraints. What did you return in delegate methods for height ?

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Pasted the methods here

func expandableTableView(_ expandableTableView: LUExpandableTableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        /// Returning `UITableViewAutomaticDimension` value on iOS 9 will cause reloading all cells due to an iOS 9 bug with automatic dimensions
        return 196
    }
    
    func expandableTableView(_ expandableTableView: LUExpandableTableView, heightForHeaderInSection section: Int) -> CGFloat {
        /// Returning `UITableViewAutomaticDimension` value on iOS 9 will cause reloading all cells due to an iOS 9 bug with automatic dimensions
        return 196
    }

Also, yes there was something strange happening with the constraints. I have a simple container view in the section's header xib and I was always getting the UIViewAlertForUnsatisfiableConstraints alert when the view was collapsing, so I simply changed the constraints from leading, top, bottom, trailing distance of 8 to Less or equal 8. Maybe it's because of this?

More info: The container view is the root view of the header, after the header's own root view of course.

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For top, leading and trailing you can leave it equal to 8. For bottom put it also equal to 8 but change priority to 750. Did the flicker occur even after resolving UIViewAlertForUnsatisfiableConstraints warning ?

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Yes, it does unfortunately. With both my edited constraints + your priority 750 suggestion.

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Try setting estimatedRowHeight and estimatedSectionHeaderHeight to 196 and return UITableViewAutomaticDimension in delegate methods. On which iOS version flicker occurs ? On both iOS 9 and 10 ?

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It is worse. This is what happens now after I added UITableViewAutomaticDimension and set the height before.

http://sendvid.com/zwqhcmkl

Happens on iOS 10. Didn't test on iOS 9 yet.

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Any updates on this?

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Sorry, but I don't have time to investigate until this weekend.

from luexpandabletableview.

Sorry for the delay. I took a look at your problem, but I haven't found any solution and I don't have access to your source code.

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