2014/10/15 下午 10:10:59

iphone Programming Glossary: layoutattributesforelementsinrect

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

const NSInteger kMaxCellSpacing 9 @implementation CWDLeftAlignedCollectionViewFlowLayout NSArray layoutAttributesForElementsInRect CGRect rect NSArray attributesToReturn super layoutAttributesForElementsInRect rect for UICollectionViewLayoutAttributes.. NSArray layoutAttributesForElementsInRect CGRect rect NSArray attributesToReturn super layoutAttributesForElementsInRect rect for UICollectionViewLayoutAttributes attributes in attributesToReturn if nil attributes.representedElementKind NSIndexPath..

targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionViewFlowLayout

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

0 self.collectionView.bounds.size.width self.collectionView.bounds.size.height NSArray array super layoutAttributesForElementsInRect targetRect for UICollectionViewLayoutAttributes layoutAttributes in array CGFloat itemOffset layoutAttributes.frame.origin.x..

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

methods Methods to Override Every layout object should implement the following methods collectionViewContentSize layoutAttributesForElementsInRect layoutAttributesForItemAtIndexPath layoutAttributesForSupplementaryViewOfKind atIndexPath if your layout supports supplementary.. UICollectionViewFlowLayout @end Inside the Implementation File make sure it has the following NSArray layoutAttributesForElementsInRect CGRect rect NSMutableArray answer super layoutAttributesForElementsInRect rect mutableCopy UICollectionView const cv self.collectionView.. File make sure it has the following NSArray layoutAttributesForElementsInRect CGRect rect NSMutableArray answer super layoutAttributesForElementsInRect rect mutableCopy UICollectionView const cv self.collectionView CGPoint const contentOffset cv.contentOffset NSMutableIndexSet..