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[ASPagerNode] Fix crash in example reload by nilling-out currentIndexPath after usage. #1418

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Mar 24, 2016
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[ASPagerNode] Fix crash in example reload by nilling-out currentIndexPath after usage. #1418

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10 changes: 6 additions & 4 deletions AsyncDisplayKit/ASPagerFlowLayout.m
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Original file line number Diff line number Diff line change
Expand Up @@ -25,16 +25,18 @@ - (void)invalidateLayout
- (CGPoint)targetContentOffsetForProposedContentOffset:(CGPoint)proposedContentOffset
{
if (self.currentIndexPath) {
return [self _targetContentOffsetForItemAtIndexPath:self.currentIndexPath
proposedContentOffset:proposedContentOffset];
CGPoint contentOffset = [self _targetContentOffsetForItemAtIndexPath:self.currentIndexPath
proposedContentOffset:proposedContentOffset];
self.currentIndexPath = nil;
return contentOffset;
}

return [super targetContentOffsetForProposedContentOffset:proposedContentOffset];
}

- (CGPoint)_targetContentOffsetForItemAtIndexPath:(NSIndexPath *)indexPath proposedContentOffset:(CGPoint)proposedContentOffset
{
UICollectionViewLayoutAttributes *attributes = [self layoutAttributesForItemAtIndexPath:self.currentIndexPath];
UICollectionViewLayoutAttributes *attributes = [self layoutAttributesForItemAtIndexPath:indexPath];
CGFloat xOffset = (self.collectionView.bounds.size.width - attributes.frame.size.width) / 2;
return CGPointMake(attributes.frame.origin.x - xOffset, proposedContentOffset.y);
}
Expand All @@ -60,4 +62,4 @@ - (CGRect)_visibleRect
return visibleRect;
}

@end
@end