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2014/10/15 ¤U¤È 10:15:16

iphone Programming Glossary: uicollectionviewlayoutattributes

how do you determine spacing between cells in UICollectionView flowLayout

http://stackoverflow.com/questions/13017257/how-do-you-determine-spacing-between-cells-in-uicollectionview-flowlayout

CGRect rect NSArray attributesToReturn super layoutAttributesForElementsInRect rect for UICollectionViewLayoutAttributes attributes in attributesToReturn if nil attributes.representedElementKind NSIndexPath indexPath attributes.indexPath attributes.frame.. attributes.frame self layoutAttributesForItemAtIndexPath indexPath .frame return attributesToReturn UICollectionViewLayoutAttributes layoutAttributesForItemAtIndexPath NSIndexPath indexPath UICollectionViewLayoutAttributes currentItemAttributes super layoutAttributesForItemAtIndexPath.. return attributesToReturn UICollectionViewLayoutAttributes layoutAttributesForItemAtIndexPath NSIndexPath indexPath UICollectionViewLayoutAttributes currentItemAttributes super layoutAttributesForItemAtIndexPath indexPath UIEdgeInsets sectionInset UICollectionViewFlowLayout..

targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionViewFlowLayout

http://stackoverflow.com/questions/13492037/targetcontentoffsetforproposedcontentoffsetwithscrollingvelocity-without-subcla

self.collectionView.bounds.size.height NSArray array super layoutAttributesForElementsInRect targetRect for UICollectionViewLayoutAttributes layoutAttributes in array CGFloat itemOffset layoutAttributes.frame.origin.x if ABS itemOffset horizontalOffset ABS offsetAdjustment..

How to make Supplementary View float in UICollectionView as Section Headers do in UITableView plain style

http://stackoverflow.com/questions/13511733/how-to-make-supplementary-view-float-in-uicollectionview-as-section-headers-do-i

CGPoint const contentOffset cv.contentOffset NSMutableIndexSet missingSections NSMutableIndexSet indexSet for UICollectionViewLayoutAttributes layoutAttributes in answer if layoutAttributes.representedElementCategory UICollectionElementCategoryCell missingSections.. UICollectionElementCategoryCell missingSections addIndex layoutAttributes.indexPath.section for UICollectionViewLayoutAttributes layoutAttributes in answer if layoutAttributes.representedElementKind isEqualToString UICollectionElementKindSectionHeader.. ^ NSUInteger idx BOOL stop NSIndexPath indexPath NSIndexPath indexPathForItem 0 inSection idx UICollectionViewLayoutAttributes layoutAttributes self layoutAttributesForSupplementaryViewOfKind UICollectionElementKindSectionHeader atIndexPath indexPath..