iphone - UICollectionView accumulating animations over different batch updates -

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i have problem animations of uicollectionview on different batch updates. i'm using code:

[collectionview performbatchupdates:^{     if (touched) {         [collectionview deleteitemsatindexpaths:markeditems];         [collectionview insertsections:newsec];     } else {         [collectionview deletesections:newsec];         [collectionview insertitemsatindexpaths:markeditems];     } } completion:nil];

here's video of i'm trying , problem. idea when touch on image it'll animate top, new main image , fade other images. problem is, when go , touch other image it'll animate new touched image and previous image.

i believe it's uicollectionview bug , can't figure out workaround.

here's sample project, if want.

i contacted apple. engineers said it's bug in uikit , there's no know work around , should wait next major ios preview releases (ios 7) check if fixes problem.


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