// // LMHWaterFallLayout.h // WateFallLayoutTest // // Created by 刘梦桦 on 2017/5/18. // Copyright © 2017年 lmh. All rights reserved. // #import @class LMHWaterFallLayout; @protocol LMHWaterFallLayoutDeleaget @required /** * 每个item的高度 */ - (CGFloat)waterFallLayout:(LMHWaterFallLayout *)waterFallLayout heightForItemAtIndexPath:(NSUInteger)indexPath itemWidth:(CGFloat)itemWidth; @optional /** * 有多少列 */ - (NSUInteger)columnCountInWaterFallLayout:(LMHWaterFallLayout *)waterFallLayout; /** * 每列之间的间距 */ - (CGFloat)columnMarginInWaterFallLayout:(LMHWaterFallLayout *)waterFallLayout; /** * 每行之间的间距 */ - (CGFloat)rowMarginInWaterFallLayout:(LMHWaterFallLayout *)waterFallLayout; /** * 每个item的内边距 */ - (UIEdgeInsets)edgeInsetdInWaterFallLayout:(LMHWaterFallLayout *)waterFallLayout; @end @interface LMHWaterFallLayout : UICollectionViewFlowLayout /** 代理 */ @property(nonatomic,assign)NSInteger tag; @property (nonatomic, weak) id delegate; @end