增加换肤功能

QXLive/Third/ZLCollectionViewFlowLayout/ZLBaseEventModel.h

@@ -0,0 +1,25 @@
+//
+//  ZLBaseEventModel.h
+//  ZLCollectionView
+//
+//  Created by hqtech on 2020/4/18.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ZLBaseEventModel : NSObject
+
+@property(nonatomic,copy)NSString* _Nullable eventName;
+@property(nonatomic,strong)id _Nullable parameter;
+
+- (instancetype)initWithEventName:(NSString* _Nullable)eventName;
+- (instancetype)initWithEventName:(NSString* _Nullable)eventName parameter:(id _Nullable)parameter;
++ (instancetype)createWithEventName:(NSString* _Nullable)eventName;
++ (instancetype)createWithEventName:(NSString* _Nullable)eventName parameter:(id _Nullable)parameter;
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLBaseEventModel.m

@@ -0,0 +1,35 @@
+//
+//  ZLBaseEventModel.m
+//  ZLCollectionView
+//
+//  Created by hqtech on 2020/4/18.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLBaseEventModel.h"
+
+@implementation ZLBaseEventModel
+
+- (instancetype)initWithEventName:(NSString* _Nullable)eventName {
+    return [self initWithEventName:eventName parameter:nil];
+}
+
+- (instancetype)initWithEventName:(NSString* _Nullable)eventName parameter:(id _Nullable)parameter {
+    if (self == [super init]) {
+        self.eventName = eventName;
+        self.parameter = parameter;
+    }
+    return self;
+}
+
++ (instancetype)createWithEventName:(NSString* _Nullable)eventName {
+    ZLBaseEventModel* eventModel = [[ZLBaseEventModel alloc]initWithEventName:eventName parameter:nil];
+    return eventModel;
+}
+
++ (instancetype)createWithEventName:(NSString* _Nullable)eventName parameter:(id _Nullable)parameter {
+    ZLBaseEventModel* eventModel = [[ZLBaseEventModel alloc]initWithEventName:eventName parameter:parameter];
+    return eventModel;
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCellFakeView.h

@@ -0,0 +1,25 @@
+//
+//  ZLCellFakeView.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/25.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface ZLCellFakeView : UIView
+
+@property (nonatomic, weak)UICollectionViewCell *cell;
+@property (nonatomic, strong)UIImageView *cellFakeImageView;
+@property (nonatomic, strong)UIImageView *cellFakeHightedView;
+@property (nonatomic, strong)NSIndexPath *indexPath;
+@property (nonatomic, assign)CGPoint originalCenter;
+@property (nonatomic, assign)CGRect cellFrame;
+
+- (instancetype)initWithCell:(UICollectionViewCell *)cell;
+- (void)changeBoundsIfNeeded:(CGRect)bounds;
+- (void)pushFowardView;
+- (void)pushBackView:(void(^)(void))completion;
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCellFakeView.m

@@ -0,0 +1,100 @@
+//
+//  ZLCellFakeView.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/25.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCellFakeView.h"
+
+@implementation ZLCellFakeView
+
+- (instancetype)initWithCell:(UICollectionViewCell *)cell{
+    self = [super initWithFrame:cell.frame];
+    if (self) {
+        self.cell = cell;
+        
+        self.layer.shadowColor = [UIColor blackColor].CGColor;
+        self.layer.shadowOffset = CGSizeMake(0, 0);
+        self.layer.shadowOpacity = 0;
+        self.layer.shadowRadius = 5.0;
+        self.layer.shouldRasterize = false;
+        self.layer.masksToBounds = YES;
+        self.clipsToBounds = YES;
+        
+        self.cellFakeImageView = [[UIImageView alloc]initWithFrame:self.bounds];
+        self.cellFakeImageView.contentMode = UIViewContentModeScaleAspectFill;
+        self.cellFakeImageView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+        
+        self.cellFakeHightedView = [[UIImageView alloc]initWithFrame:self.bounds];
+        self.cellFakeHightedView.contentMode = UIViewContentModeScaleAspectFill;
+        self.cellFakeHightedView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+        
+        cell.highlighted = YES;
+        self.cellFakeHightedView.image = [self getCellImage];
+        cell.highlighted = NO;
+        self.cellFakeImageView.image = [self getCellImage];
+        
+        [self addSubview:self.cellFakeImageView];
+        [self addSubview:self.cellFakeHightedView];
+        
+    }
+    
+    return self;
+}
+
+- (void)changeBoundsIfNeeded:(CGRect)bounds{
+    if (CGRectEqualToRect(self.bounds, bounds)) {
+        return;
+    }
+    [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionBeginFromCurrentState animations:^{
+        self.bounds = bounds;
+    } completion:nil];
+}
+
+- (void)pushFowardView{
+    [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionBeginFromCurrentState animations:^{
+        self.center = self.originalCenter;
+        self.transform = CGAffineTransformMakeScale(1.1, 1.1);
+        self.cellFakeHightedView.alpha = 0;
+        
+        CABasicAnimation *shadowAnimation = [CABasicAnimation animationWithKeyPath:@"shadowOpacity"];
+        shadowAnimation.fromValue = @(0);
+        shadowAnimation.toValue = @(0.7);
+        shadowAnimation.removedOnCompletion = NO;
+        shadowAnimation.fillMode = kCAFillModeForwards;
+        [self.layer addAnimation:shadowAnimation forKey:@"applyShadow"];
+    } completion:^(BOOL finished) {
+        [self.cellFakeHightedView removeFromSuperview];
+    }];
+}
+
+- (void)pushBackView:(void(^)(void))completion{
+    [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionBeginFromCurrentState animations:^{
+        //self.transform = CGAffineTransformIdentity;
+        //self.frame = self.cellFrame;
+        CABasicAnimation *shadowAnimation = [CABasicAnimation animationWithKeyPath:@"shadowOpacity"];
+        shadowAnimation.fromValue = @(0.7);
+        shadowAnimation.toValue = @(0);
+        shadowAnimation.removedOnCompletion = NO;
+        shadowAnimation.fillMode = kCAFillModeForwards;
+        [self.layer addAnimation:shadowAnimation forKey:@"removeShadow"];
+    } completion:^(BOOL finished) {
+        if (completion) {
+            completion();
+        }
+    }];
+}
+
+- (UIImage *)getCellImage{
+    UIGraphicsBeginImageContextWithOptions(_cell.bounds.size, NO, [UIScreen mainScreen].scale * 2);
+    
+    [self.cell.layer renderInContext:UIGraphicsGetCurrentContext()];
+    
+    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    return image;
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionBaseDecorationView.h

@@ -0,0 +1,17 @@
+//
+//  ZLCollectionBackView.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2020/4/17.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ZLCollectionBaseDecorationView : UICollectionReusableView
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionBaseDecorationView.m

@@ -0,0 +1,46 @@
+//
+//  ZLCollectionBackView.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2020/4/17.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionBaseDecorationView.h"
+#import "ZLCollectionViewBackgroundViewLayoutAttributes.h"
+#import <objc/runtime.h>
+
+@implementation ZLCollectionBaseDecorationView
+
+- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes {
+    //设置背景颜色
+    ZLCollectionViewBackgroundViewLayoutAttributes *myLayoutAttributes = (ZLCollectionViewBackgroundViewLayoutAttributes*)layoutAttributes;
+    unsigned int methodCount = 0;
+    Method *methods = class_copyMethodList([self class], &methodCount);
+    if ([myLayoutAttributes isKindOfClass:[ZLCollectionViewBackgroundViewLayoutAttributes class]] && myLayoutAttributes.eventName != nil && myLayoutAttributes.eventName.length > 0) {
+        for(int i = 0; i < methodCount; i++) {
+            Method method = methods[i];
+            SEL sel = method_getName(method);
+            const char *name = sel_getName(sel);
+            NSString* methodName = [NSString stringWithUTF8String:name];
+            if ([methodName isEqualToString:myLayoutAttributes.eventName]) {
+                //object_setClass(self, newClass);
+                SEL selector = NSSelectorFromString(myLayoutAttributes.eventName);
+                IMP imp = [self methodForSelector:selector];
+                if ([self respondsToSelector:selector]) {
+                    if (myLayoutAttributes.parameter) {
+                        void (*func) (id, SEL, id) = (void *)imp;
+                        func(self,selector,myLayoutAttributes.parameter);
+                    } else {
+                        void (*func) (id, SEL) = (void *)imp;
+                        func(self,selector);
+                    }
+                }
+               break;
+            };
+        }
+    }
+    free(methods);
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionReusableView.h

@@ -0,0 +1,13 @@
+//
+//  ZLCollectionReusableView.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/9.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface ZLCollectionReusableView : UICollectionReusableView
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionReusableView.m

@@ -0,0 +1,57 @@
+//
+//  ZLCollectionReusableView.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/9.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionReusableView.h"
+#import "ZLCollectionViewLayoutAttributes.h"
+
+@interface ZLCollectionReusableView ()
+
+@property(nonatomic,strong)UIImageView* ivBackground;
+
+@end
+
+@implementation ZLCollectionReusableView
+
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self == [super initWithFrame:frame]) {
+        self.translatesAutoresizingMaskIntoConstraints = NO;
+        [self addSubview:self.ivBackground];
+        self.ivBackground.translatesAutoresizingMaskIntoConstraints = NO;
+        [self addConstraints:@[
+            [NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0.0],
+            [NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeRight multiplier:1.0 constant: 0.0],
+            [NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeTop multiplier:1.0 constant: 0.0],
+            [NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeBottom multiplier:1.0 constant: 0.0]
+            ]];
+    }
+    return self;
+}
+
+- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes {
+    [super applyLayoutAttributes:layoutAttributes];
+    //设置背景颜色
+    ZLCollectionViewLayoutAttributes *ecLayoutAttributes = (ZLCollectionViewLayoutAttributes*)layoutAttributes;
+    if (ecLayoutAttributes.color) {
+        self.backgroundColor = ecLayoutAttributes.color;
+    }
+    if (ecLayoutAttributes.image) {
+        self.ivBackground.image = ecLayoutAttributes.image;
+    }
+}
+
+
+- (UIImageView*)ivBackground {
+    if (!_ivBackground) {
+        _ivBackground = [[UIImageView alloc]init];
+        _ivBackground.contentMode = UIViewContentModeScaleAspectFill;
+        _ivBackground.backgroundColor = [UIColor clearColor];
+    }
+    return _ivBackground;
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBackgroundViewLayoutAttributes.h

@@ -0,0 +1,27 @@
+//
+//  ZLCollectionViewBackViewLayoutAttributes.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2020/4/17.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "ZLBaseEventModel.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ZLCollectionViewBackgroundViewLayoutAttributes : UICollectionViewLayoutAttributes
+
+//此属性只是header会单独设置，其他均直接返回其frame属性
+@property(nonatomic,assign,readonly)CGRect headerFrame;
+@property(nonatomic,assign,readonly)CGRect footerFrame;
+
+@property(nonatomic,copy)NSString* eventName;
+@property(nonatomic,copy)id parameter;
+
+- (void)callMethod:(ZLBaseEventModel*)eventModel;
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBackgroundViewLayoutAttributes.m

@@ -0,0 +1,45 @@
+//
+//  ZLCollectionViewBackViewLayoutAttributes.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2020/4/17.
+//  Copyright © 2020 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewBackgroundViewLayoutAttributes.h"
+
+@implementation ZLCollectionViewBackgroundViewLayoutAttributes
+@synthesize headerFrame = _headerFrame;
+@synthesize footerFrame = _footerFrame;
+
++ (instancetype)layoutAttributesForDecorationViewOfKind:(NSString *)decorationViewKind withIndexPath:(NSIndexPath *)indexPath orginalFrmae:(CGRect)orginalFrame{
+    ZLCollectionViewBackgroundViewLayoutAttributes *layoutAttributes = [super layoutAttributesForDecorationViewOfKind:decorationViewKind withIndexPath:indexPath];
+    [layoutAttributes setValue:[NSValue valueWithCGRect:orginalFrame] forKey:@"orginalFrame"];
+    layoutAttributes.frame = orginalFrame;
+    return layoutAttributes;
+}
+
+-(CGRect)orginalFrame {
+    if ([self.representedElementKind isEqualToString:UICollectionElementKindSectionHeader]) {
+        return _headerFrame;
+    } else if ([self.representedElementKind isEqualToString:UICollectionElementKindSectionFooter]) {
+        return _footerFrame;
+    } else {
+        return self.frame;
+    }
+}
+
+- (void)callMethod:(ZLBaseEventModel*)eventModel {
+    NSAssert([eventModel isKindOfClass:[ZLBaseEventModel class]], @"callMethod必须传入ZLBaseEventModel类型参数");
+    if (eventModel == nil) {
+        return;
+    }
+    if (eventModel.eventName != nil) {
+        self.eventName = eventModel.eventName;
+    }
+    if (eventModel.parameter) {
+        self.parameter = eventModel.parameter;
+    }
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBaseFlowLayout.h

@@ -0,0 +1,136 @@
+//
+//  ZLCollectionViewBaseFlowLayout.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "ZLBaseEventModel.h"
+
+/**
+ 版本：1.4.9
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef enum {
+    LabelHorizontalLayout   = 1,        //标签横向
+    LabelVerticalLayout     = 2,        //标签纵向
+    LabelLayout             = LabelHorizontalLayout,        //标签页布局。   一堆label标签的集合
+    ClosedLayout            = 3,
+    ColumnLayout            = ClosedLayout, //列布局       指定列数，按列数来等分一整行，itemSize的width可以任意写，在布局中会自动帮你计算。可用于瀑布流，普通UITableViewCell
+    PercentLayout           = 4,        //百分比布局     需实现percentOfRow的代理，根据设定值来计算每个itemSize的宽度
+    FillLayout              = 5,        //填充式布局     将一堆大小不一的view见缝插针的填充到一个平面内，规则为先判断从左到右是否有间隙填充，再从上到下判断。
+    AbsoluteLayout          = 6,        //绝对定位布局    需实现rectOfItem的代理，指定每个item的frame
+} ZLLayoutType;
+
+typedef enum {
+    minHeight               = 1,        // 按最小高度
+    Sequence                = 2,        // 按顺序
+} ZLColumnSortType;
+
+@class ZLCollectionViewBaseFlowLayout;
+@protocol  ZLCollectionViewBaseFlowLayoutDelegate <NSObject, UICollectionViewDelegateFlowLayout>
+@optional
+//指定是什么布局，如没有指定则为FillLayout(填充式布局)
+- (ZLLayoutType)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout typeOfLayout:(NSInteger)section;
+
+/******** 设置每个section的背景色 ***********/
+//设置每个section的背景色
+- (UIColor*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backColorForSection:(NSInteger)section;
+
+//设置每个section的背景图
+- (UIImage*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backImageForSection:(NSInteger)section;
+
+//自定义每个section的背景view，需要继承UICollectionReusableView(如要调用方法传递参数需要继承ZLCollectionBaseDecorationView)，返回类名
+- (NSString*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout registerBackView:(NSInteger)section;
+
+//向每个section自定义背景view传递自定义方法 eventName:方法名（注意带参数的方法名必须末尾加:）,parameter:参数
+- (ZLBaseEventModel*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backgroundViewMethodForSection:(NSInteger)section;
+
+//背景是否延伸覆盖到headerView，默认为NO
+- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout attachToTop:(NSInteger)section;
+
+//背景是否延伸覆盖到footerView，默认为NO
+- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout attachToBottom:(NSInteger)section;
+
+/******** 提取出UICollectionViewLayoutAttributes的一些属性 ***********/
+//设置每个item的zIndex，不指定默认为0
+- (NSInteger)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout zIndexOfItem:(NSIndexPath*)indexPath;
+//设置每个item的CATransform3D，不指定默认为CATransform3DIdentity
+- (CATransform3D)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout transformOfItem:(NSIndexPath*)indexPath;
+//设置每个item的alpha，不指定默认为1
+- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout alphaOfItem:(NSIndexPath*)indexPath;
+
+/******** ClosedLayout列布局需要的代理 ***********/
+//在ClosedLayout列布局中指定一行有几列，不指定默认为1列
+- (NSInteger)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout columnCountOfSection:(NSInteger)section;
+
+//在ClosedLayout列布局中指定哪列哪行可以是单行布局，不指定以上个方法为准
+- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout singleColumnCountOfIndexPath:(NSIndexPath*)indexPath;
+
+/******** PercentLayout百分比布局需要的代理 ***********/
+//在PercentLayout百分比布局中指定每个item占该行的几分之几，如3.0/4，注意为大于0小于等于1的数字。不指定默认为1
+- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout percentOfRow:(NSIndexPath*)indexPath;
+
+/******** AbsoluteLayout绝对定位布局需要的代理 ***********/
+//在AbsoluteLayout绝对定位布局中指定每个item的frame，不指定默认为CGRectZero
+- (CGRect)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout rectOfItem:(NSIndexPath*)indexPath;
+
+/******** 拖动cell的相关代理 ***************************/
+//- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout shouldMoveCell:(NSIndexPath*)indexPath;
+
+- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout didMoveCell:(NSIndexPath*)atIndexPath toIndexPath:(NSIndexPath*)toIndexPath;
+
+@end
+
+
+/***
+ 此类是基类，不要调用。
+ 
+ 纵向布局请调用 #import "ZLCollectionViewVerticalLayout.h"
+ 横向布局请调用 #import "ZLCollectionViewHorzontalLayout.h"
+ ***/
+@interface ZLCollectionViewBaseFlowLayout : UICollectionViewFlowLayout
+
+@property (nonatomic,weak) id<ZLCollectionViewBaseFlowLayoutDelegate> delegate;
+
+@property (nonatomic,assign) BOOL isFloor; // 宽度是否向下取整，默认YES，用于填充布局，未来加入百分比布局
+
+@property (nonatomic,assign) BOOL canDrag;              //是否允许拖动cell，默认是NO
+
+@property (nonatomic,assign) BOOL header_suspension;    //头部是否悬浮，默认是NO
+
+@property (nonatomic,assign) ZLLayoutType layoutType;   //指定layout的类型，也可以在代理里设置
+
+@property (nonatomic,assign) NSInteger columnCount;     //指定列数
+
+@property (nonatomic,assign) ZLColumnSortType columnSortType;   // 瀑布流列排序的方式
+
+@property (nonatomic,assign) CGFloat fixTop;            //header偏移量
+
+@property (nonatomic,assign) CGFloat xBeyond;           //x轴允许超出的偏移量（仅填充布局，默认3px）
+
+//每个section的每一列的高度
+@property (nonatomic, strong) NSMutableArray *collectionHeightsArray;
+//存放每一个cell的属性
+@property (nonatomic, strong) NSMutableArray *attributesArray;
+//存放header属性, 外部不要干预
+@property (nonatomic, strong, readonly) NSMutableArray *headerAttributesArray;
+
+//是否需要重新计算所有布局
+//内部控制，一般情况外部无需干预(内部会在外部调用reloadData,insertSections,insertItems,deleteItems...等方法调用时将此属性自动置为YES)
+@property (nonatomic, assign, readonly) BOOL isNeedReCalculateAllLayout;
+
+//提供一个方法来设置isNeedReCalculateAllLayout (之所以提供是因为特殊情况下外部可能需要强制重新计算布局)
+//比如需要强制刷新布局时，可以先调用此函数设置为YES, 一般情况外部无需干预
+- (void)forceSetIsNeedReCalculateAllLayout:(BOOL)isNeedReCalculateAllLayout;
+
+// 注册所有的背景view(传入类名)
+- (void)registerDecorationView:(NSArray<NSString*>*)classNames;
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBaseFlowLayout.m

@@ -0,0 +1,527 @@
+//
+//  ZLCollectionViewBaseFlowLayout.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewBaseFlowLayout.h"
+#import "ZLCollectionViewLayoutAttributes.h"
+#import "ZLCellFakeView.h"
+
+typedef NS_ENUM(NSUInteger, LewScrollDirction) {
+    LewScrollDirctionStay,
+    LewScrollDirctionToTop,
+    LewScrollDirctionToEnd,
+};
+
+@interface ZLCollectionViewBaseFlowLayout ()
+<UIGestureRecognizerDelegate>
+
+//关于拖动的参数
+@property (nonatomic, strong) ZLCellFakeView *cellFakeView;
+@property (nonatomic, strong) UILongPressGestureRecognizer *longPress;
+@property (nonatomic, strong) UIPanGestureRecognizer *panGesture;
+@property (nonatomic, assign) CGPoint fakeCellCenter;
+@property (nonatomic, assign) CGPoint panTranslation;
+@property (nonatomic) LewScrollDirction continuousScrollDirection;
+@property (nonatomic, strong) CADisplayLink *displayLink;
+
+@end
+
+@implementation ZLCollectionViewBaseFlowLayout {
+    BOOL _isNeedReCalculateAllLayout;
+}
+
+- (instancetype)init {
+    if (self == [super init]) {
+        self.isFloor = YES;
+        self.canDrag = NO;
+        self.header_suspension = NO;
+        self.layoutType = FillLayout;
+        self.columnCount = 1;
+        self.columnSortType = minHeight;
+        self.fixTop = 0;
+        self.xBeyond = 3;
+        _isNeedReCalculateAllLayout = YES;
+        _headerAttributesArray = @[].mutableCopy;
+        [self addObserver:self forKeyPath:@"collectionView" options:NSKeyValueObservingOptionNew context:nil];
+    }
+    return self;
+}
+
+#pragma mark - 当尺寸有所变化时，重新刷新
+- (BOOL)shouldInvalidateLayoutForBoundsChange:(CGRect)newBounds {
+    return self.header_suspension;
+}
+
+//+ (Class)layoutAttributesClass {
+//    return [ZLCollectionViewLayoutAttributes class];
+//}
+
+- (void)invalidateLayoutWithContext:(UICollectionViewLayoutInvalidationContext *)context {
+    //外部调用relaodData或变更任意数据时则认为需要进行全量布局的刷新
+    //好处是在外部变更数据时内部布局会及时刷新
+    //劣势是在你在上拉加载某一页时,布局会全部整体重新计算一遍,并非只计算新增的布局
+    _isNeedReCalculateAllLayout = context.invalidateEverything || context.invalidateDataSourceCounts;
+    [super invalidateLayoutWithContext:context];
+}
+
+// 注册所有的背景view(传入类名)
+- (void)registerDecorationView:(NSArray<NSString*>*)classNames {
+    for (NSString* className in classNames) {
+        if (className.length > 0) {
+            [self registerClass:NSClassFromString(className) forDecorationViewOfKind:className];
+        }
+    }
+}
+
+- (void)dealloc {
+    [self removeObserver:self forKeyPath:@"collectionView"];
+}
+
+#pragma mark - 所有cell和view的布局属性
+- (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect
+{
+    if (!self.attributesArray || self.collectionView.numberOfSections == 0) {
+        return [super layoutAttributesForElementsInRect:rect];
+    } else {
+        if (self.header_suspension) {
+            //只在headerAttributesArray里面查找需要悬浮的属性
+            for (UICollectionViewLayoutAttributes *attriture in self.headerAttributesArray) {
+                if (![attriture.representedElementKind isEqualToString:UICollectionElementKindSectionHeader])
+                    continue;
+                NSInteger section = attriture.indexPath.section;
+                CGRect frame = attriture.frame;
+                BOOL isNeedChangeFrame = NO;
+                if (section == 0) {
+                    if (self.scrollDirection == UICollectionViewScrollDirectionVertical) {
+                        CGFloat offsetY = self.collectionView.contentOffset.y + self.fixTop;
+                        if (offsetY > 0 && offsetY < [self.collectionHeightsArray[0] floatValue]) {
+                            frame.origin.y = offsetY;
+                            attriture.zIndex = 1000+section;
+                            attriture.frame = frame;
+                            isNeedChangeFrame = YES;
+                        }
+                    } else {
+                        CGFloat offsetX = self.collectionView.contentOffset.y + self.fixTop;
+                        if (offsetX > 0 && offsetX < [self.collectionHeightsArray[0] floatValue]) {
+                            frame.origin.x = offsetX;
+                            attriture.zIndex = 1000+section;
+                            attriture.frame = frame;
+                            isNeedChangeFrame = YES;
+                        }
+                    }
+                } else {
+                    if (self.scrollDirection == UICollectionViewScrollDirectionVertical) {
+                        CGFloat offsetY = self.collectionView.contentOffset.y + self.fixTop;
+                        if (offsetY > [self.collectionHeightsArray[section-1] floatValue] &&
+                            offsetY < [self.collectionHeightsArray[section] floatValue]) {
+                            frame.origin.y = offsetY;
+                            attriture.zIndex = 1000+section;
+                            attriture.frame = frame;
+                            isNeedChangeFrame = YES;
+                        }
+                    } else {
+                        CGFloat offsetX = self.collectionView.contentOffset.y + self.fixTop;
+                        if (offsetX > [self.collectionHeightsArray[section-1] floatValue] &&
+                            offsetX < [self.collectionHeightsArray[section] floatValue]) {
+                            frame.origin.x = offsetX;
+                            attriture.zIndex = 1000+section;
+                            attriture.frame = frame;
+                            isNeedChangeFrame = YES;
+                        }
+                    }
+                }
+                
+                if (!isNeedChangeFrame) {
+                    /*
+                     这里需要注意，在悬浮的情况下改变了headerAtt的frame
+                     在滑出header又滑回来时,headerAtt已经被修改过，需要改回原始值
+                     否则header无法正确归位
+                     */
+                    if ([attriture isKindOfClass:[ZLCollectionViewLayoutAttributes class]]) {
+                        attriture.frame = ((ZLCollectionViewLayoutAttributes*)attriture).orginalFrame;
+                    }
+                }
+            }
+        }
+        return self.attributesArray;
+    }
+}
+
+// 1.4.8暂时去掉layoutAttributesForItemAtIndexPath方法
+//- (UICollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSIndexPath *)indexPath {
+//    UICollectionViewLayoutAttributes *layoutAttributes = (UICollectionViewLayoutAttributes*)self.attributesArray[indexPath.item];
+//    if(!layoutAttributes) {
+//        layoutAttributes = [super layoutAttributesForItemAtIndexPath:indexPath];
+//    }
+//    return layoutAttributes;
+//}
+
+/**
+
+ */
+
+#pragma mark 以下是拖动排序的代码
+- (void)setCanDrag:(BOOL)canDrag {
+    _canDrag = canDrag;
+    if (canDrag) {
+        if (self.longPress == nil && self.panGesture == nil) {
+            [self setUpGestureRecognizers];
+        }
+    } else {
+        [self.collectionView removeGestureRecognizer:self.longPress];
+        self.longPress.delegate = nil;
+        self.longPress = nil;
+        [self.collectionView removeGestureRecognizer:self.panGesture];
+        self.panGesture.delegate = nil;
+        self.panGesture = nil;
+    }
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
+    if ([keyPath isEqualToString:@"collectionView"]) {
+        if (self.canDrag) {
+            [self setUpGestureRecognizers];
+        }
+    }else{
+        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
+    }
+}
+
+- (void)setUpGestureRecognizers{
+    if (self.collectionView == nil) {
+        return;
+    }
+    self.longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPress:)];
+    self.panGesture = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanGesture:)];
+    self.longPress.delegate = self;
+    self.panGesture.delegate = self;
+    self.panGesture.maximumNumberOfTouches = 1;
+    NSArray *gestures = [self.collectionView gestureRecognizers];
+    __weak typeof(ZLCollectionViewBaseFlowLayout*) weakSelf = self;
+    [gestures enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+        if ([obj isKindOfClass:[UILongPressGestureRecognizer class]]) {
+            [(UILongPressGestureRecognizer *)obj requireGestureRecognizerToFail:weakSelf.longPress];
+        }
+    }];
+    [self.collectionView addGestureRecognizer:self.longPress];
+    [self.collectionView addGestureRecognizer:self.panGesture];
+}
+
+#pragma mark - gesture
+- (void)handleLongPress:(UILongPressGestureRecognizer *)longPress {
+    CGPoint location = [longPress locationInView:self.collectionView];
+    NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:location];
+    
+    //    __weak typeof(ZLCollectionViewBaseFlowLayout*) weakSelf = self;
+    //    if ([weakSelf.delegate respondsToSelector:@selector(collectionView:layout:shouldMoveCell:)]) {
+    //        if ([weakSelf.delegate collectionView:weakSelf.collectionView layout:weakSelf shouldMoveCell:indexPath] == NO) {
+    //            return;
+    //        }
+    //    }
+    
+    if (_cellFakeView != nil) {
+        indexPath = self.cellFakeView.indexPath;
+    }
+    
+    if (indexPath == nil) {
+        return;
+    }
+    
+    switch (longPress.state) {
+        case UIGestureRecognizerStateBegan:{
+            // will begin drag item
+            self.collectionView.scrollsToTop = NO;
+            
+            UICollectionViewCell *currentCell = [self.collectionView cellForItemAtIndexPath:indexPath];
+            
+            self.cellFakeView = [[ZLCellFakeView alloc]initWithCell:currentCell];
+            self.cellFakeView.indexPath = indexPath;
+            self.cellFakeView.originalCenter = currentCell.center;
+            self.cellFakeView.cellFrame = [self layoutAttributesForItemAtIndexPath:indexPath].frame;
+            [self.collectionView addSubview:self.cellFakeView];
+            
+            self.fakeCellCenter = self.cellFakeView.center;
+            
+            [self invalidateLayout];
+            
+            [self.cellFakeView pushFowardView];
+        }
+            break;
+        case UIGestureRecognizerStateCancelled:
+        case UIGestureRecognizerStateEnded:
+            [self cancelDrag:indexPath];
+        default:
+            break;
+    }
+}
+
+// pan gesture
+- (void)handlePanGesture:(UIPanGestureRecognizer *)pan {
+    _panTranslation = [pan translationInView:self.collectionView];
+    if (_cellFakeView != nil) {
+        switch (pan.state) {
+            case UIGestureRecognizerStateChanged:{
+                CGPoint center = _cellFakeView.center;
+                center.x = self.fakeCellCenter.x + self.panTranslation.x;
+                center.y = self.fakeCellCenter.y + self.panTranslation.y;
+                self.cellFakeView.center = center;
+                [self beginScrollIfNeeded];
+                [self moveItemIfNeeded];
+            }
+                break;
+            case UIGestureRecognizerStateCancelled:
+            case UIGestureRecognizerStateEnded:
+                [self invalidateDisplayLink];
+            default:
+                break;
+        }
+    }
+}
+
+// gesture recognize delegate
+- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
+    
+    // allow move item
+    CGPoint location = [gestureRecognizer locationInView:self.collectionView];
+    NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:location];
+    if (!indexPath) {
+        return NO;
+    }
+    
+    if ([gestureRecognizer isEqual:self.longPress]){
+        return (self.collectionView.panGestureRecognizer.state == UIGestureRecognizerStatePossible || self.collectionView.panGestureRecognizer.state == UIGestureRecognizerStateFailed);
+    } else if ([gestureRecognizer isEqual:self.panGesture]){
+        return (self.longPress.state != UIGestureRecognizerStatePossible && self.longPress.state != UIGestureRecognizerStateFailed);
+    }
+    return YES;
+}
+
+- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
+    if ([self.panGesture isEqual:gestureRecognizer]) {
+        return [self.longPress isEqual:otherGestureRecognizer];
+    } else if ([self.collectionView.panGestureRecognizer isEqual:gestureRecognizer]) {
+        return (self.longPress.state != UIGestureRecognizerStatePossible && self.longPress.state != UIGestureRecognizerStateFailed);
+    }
+    return YES;
+}
+
+- (void)cancelDrag:(NSIndexPath *)toIndexPath {
+    if (self.cellFakeView == nil) {
+        return;
+    }
+    self.collectionView.scrollsToTop = YES;
+    self.fakeCellCenter = CGPointZero;
+    [self invalidateDisplayLink];
+    
+    __weak typeof(ZLCollectionViewBaseFlowLayout*) weakSelf = self;
+    [self.cellFakeView pushBackView:^{
+        [weakSelf.cellFakeView removeFromSuperview];
+        weakSelf.cellFakeView = nil;
+        [weakSelf invalidateLayout];
+    }];
+}
+
+- (void)beginScrollIfNeeded{
+    if (self.cellFakeView == nil) {
+        return;
+    }
+    CGFloat offset = self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.contentOffset.y : self.collectionView.contentOffset.x;
+    CGFloat trigerInsetTop = self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.contentInset.top: self.collectionView.contentInset.left;
+    CGFloat trigerInsetEnd = self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.contentInset.bottom : self.collectionView.contentInset.right;
+    CGFloat paddingTop = 0;
+    CGFloat paddingEnd = 0;
+    CGFloat length = self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.frame.size.height : self.collectionView.frame.size.width;
+    CGFloat fakeCellTopEdge = self.scrollDirection == UICollectionViewScrollDirectionVertical ? CGRectGetMinY(self.cellFakeView.frame) : CGRectGetMinX(self.cellFakeView.frame);
+    CGFloat fakeCellEndEdge = self.scrollDirection == UICollectionViewScrollDirectionVertical ? CGRectGetMaxY(self.cellFakeView.frame) : CGRectGetMaxX(self.cellFakeView.frame);
+    
+    if(fakeCellTopEdge <= offset + paddingTop + trigerInsetTop){
+        self.continuousScrollDirection = LewScrollDirctionToTop;
+        [self setUpDisplayLink];
+    }else if(fakeCellEndEdge >= offset + length - paddingEnd - trigerInsetEnd) {
+        self.continuousScrollDirection = LewScrollDirctionToEnd;
+        [self setUpDisplayLink];
+    }else {
+        [self invalidateDisplayLink];
+    }
+}
+
+// move item
+- (void)moveItemIfNeeded {
+    NSIndexPath *atIndexPath = nil;
+    NSIndexPath *toIndexPath = nil;
+    __weak typeof(ZLCollectionViewBaseFlowLayout*) weakSelf = self;
+    
+    if (self.cellFakeView) {
+        atIndexPath = _cellFakeView.indexPath;
+        toIndexPath = [self.collectionView indexPathForItemAtPoint:_cellFakeView.center];
+    }
+    
+    if (atIndexPath.section != toIndexPath.section) {
+        return;
+    }
+    
+    //    if ([weakSelf.delegate respondsToSelector:@selector(collectionView:layout:shouldMoveCell:)]) {
+    //        if ([weakSelf.delegate collectionView:weakSelf.collectionView layout:weakSelf shouldMoveCell:toIndexPath] == NO) {
+    //            return;
+    //        }
+    //    }
+    
+    if (atIndexPath == nil || toIndexPath == nil) {
+        return;
+    }
+    
+    if ([atIndexPath isEqual:toIndexPath]) {
+        return;
+    }
+    
+    UICollectionViewLayoutAttributes *attribute = nil;//[self layoutAttributesForItemAtIndexPath:toIndexPath];
+    for (ZLCollectionViewLayoutAttributes* attr in weakSelf.attributesArray) {
+        if (attr.indexPath.section == toIndexPath.section && attr.indexPath.item == toIndexPath.item &&
+            attr.representedElementKind != UICollectionElementKindSectionHeader &&
+            attr.representedElementKind != UICollectionElementKindSectionFooter) {
+            attribute = attr;
+            break;
+        }
+    }
+    //NSLog(@"拖动从%@到%@",atIndexPath,toIndexPath);
+    if (attribute != nil) {
+        [self.collectionView performBatchUpdates:^{
+            weakSelf.cellFakeView.indexPath = toIndexPath;
+            weakSelf.cellFakeView.cellFrame = attribute.frame;
+            [weakSelf.cellFakeView changeBoundsIfNeeded:attribute.bounds];
+            [weakSelf.collectionView moveItemAtIndexPath:atIndexPath toIndexPath:toIndexPath];
+            if ([weakSelf.delegate respondsToSelector:@selector(collectionView:layout:didMoveCell:toIndexPath:)]) {
+                [weakSelf.delegate collectionView:weakSelf.collectionView layout:weakSelf didMoveCell:atIndexPath toIndexPath:toIndexPath];
+            }
+        } completion:nil];
+    }
+}
+
+- (void)setUpDisplayLink{
+    if (_displayLink) {
+        return;
+    }
+    _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(continuousScroll)];
+    [_displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes];
+}
+
+- (void)invalidateDisplayLink{
+    _continuousScrollDirection = LewScrollDirctionStay;
+    [_displayLink invalidate];
+    _displayLink = nil;
+}
+
+- (void)continuousScroll{
+    if (_cellFakeView == nil) {
+        return;
+    }
+    
+    CGFloat percentage = [self calcTrigerPercentage];
+    CGFloat scrollRate = [self scrollValueWithSpeed:10 andPercentage:percentage];
+    
+    CGFloat offset = 0;
+    CGFloat insetTop = 0;
+    CGFloat insetEnd = 0;
+    CGFloat length = self.scrollDirection == UICollectionViewScrollDirectionVertical ?  self.collectionView.frame.size.height : self.collectionView.frame.size.width;
+    CGFloat contentLength = self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.contentSize.height : self.collectionView.contentSize.width;
+    
+    if (contentLength + insetTop + insetEnd <= length) {
+        return;
+    }
+    
+    if (offset + scrollRate <= -insetTop) {
+        scrollRate = -insetTop - offset;
+    } else if (offset + scrollRate >= contentLength + insetEnd - length) {
+        scrollRate = contentLength + insetEnd - length - offset;
+    }
+    
+    __weak typeof(ZLCollectionViewBaseFlowLayout*) weakSelf = self;
+    [self.collectionView performBatchUpdates:^{
+        if (weakSelf.scrollDirection == UICollectionViewScrollDirectionVertical) {
+            CGPoint point = weakSelf.fakeCellCenter;
+            point.y += scrollRate;
+            weakSelf.fakeCellCenter = point;
+            CGPoint center = weakSelf.cellFakeView.center;
+            center.y = weakSelf.fakeCellCenter.y + weakSelf.panTranslation.y;
+            weakSelf.cellFakeView.center = center;
+            CGPoint contentOffset = weakSelf.collectionView.contentOffset;
+            contentOffset.y += scrollRate;
+            weakSelf.collectionView.contentOffset = contentOffset;
+        } else {
+            CGPoint point = weakSelf.fakeCellCenter;
+            point.x += scrollRate;
+            weakSelf.fakeCellCenter = point;
+            //_fakeCellCenter.x += scrollRate;
+            CGPoint center = weakSelf.cellFakeView.center;
+            center.x = weakSelf.fakeCellCenter.x + weakSelf.panTranslation.x;
+            weakSelf.cellFakeView.center = center;
+            CGPoint contentOffset = weakSelf.collectionView.contentOffset;
+            contentOffset.x += scrollRate;
+            weakSelf.collectionView.contentOffset = contentOffset;
+        }
+    } completion:nil];
+    
+    [self moveItemIfNeeded];
+}
+
+- (CGFloat)calcTrigerPercentage{
+    if (_cellFakeView == nil) {
+        return 0;
+    }
+    CGFloat offset = 0;
+    CGFloat offsetEnd = 0 + self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.collectionView.frame.size.height : self.collectionView.frame.size.width;
+    CGFloat insetTop = 0;
+    CGFloat trigerInsetTop = 0;
+    CGFloat trigerInsetEnd = 0;
+    CGFloat paddingTop = 0;
+    CGFloat paddingEnd = 0;
+    
+    CGFloat percentage = 0.0;
+    
+    if (self.continuousScrollDirection == LewScrollDirctionToTop) {
+        if (self.cellFakeView) {
+            percentage = 1.0 - (((self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.cellFakeView.frame.origin.y : self.cellFakeView.frame.origin.x) - (offset + paddingTop)) / trigerInsetTop);
+        }
+    } else if (self.continuousScrollDirection == LewScrollDirctionToEnd){
+        if (self.cellFakeView) {
+            percentage = 1.0 - (((insetTop + offsetEnd - paddingEnd) - ((self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.cellFakeView.frame.origin.y : self.cellFakeView.frame.origin.x) + (self.scrollDirection == UICollectionViewScrollDirectionVertical ? self.cellFakeView.frame.size.height : self.cellFakeView.frame.size.width) + insetTop)) / trigerInsetEnd);
+        }
+    }
+    percentage = fmin(1.0f, percentage);
+    percentage = fmax(0.0f, percentage);
+    return percentage;
+}
+
+#pragma mark - getter
+- (CGFloat)scrollValueWithSpeed:(CGFloat)speed andPercentage:(CGFloat)percentage{
+    CGFloat value = 0.0f;
+    switch (_continuousScrollDirection) {
+        case LewScrollDirctionStay: {
+            return 0.0f;
+            break;
+        }
+        case LewScrollDirctionToTop: {
+            value = -speed;
+            break;
+        }
+        case LewScrollDirctionToEnd: {
+            value = speed;
+            break;
+        }
+        default: {
+            return 0.0f;
+        }
+    }
+    
+    CGFloat proofedPercentage = fmax(fmin(1.0f, percentage), 0.0f);
+    return value * proofedPercentage;
+}
+- (void)forceSetIsNeedReCalculateAllLayout:(BOOL)isNeedReCalculateAllLayout
+{
+    _isNeedReCalculateAllLayout = isNeedReCalculateAllLayout;
+}
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewHorzontalLayout.h

@@ -0,0 +1,17 @@
+//
+//  ZLCollectionViewHorzontalLayout.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewBaseFlowLayout.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ZLCollectionViewHorzontalLayout : ZLCollectionViewBaseFlowLayout
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewHorzontalLayout.m

@@ -0,0 +1,362 @@
+//
+//  ZLCollectionViewHorzontalLayout.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewHorzontalLayout.h"
+#import "ZLCollectionReusableView.h"
+#import "ZLCollectionViewLayoutAttributes.h"
+#import "ZLCollectionViewBackgroundViewLayoutAttributes.h"
+
+@interface ZLCollectionViewHorzontalLayout()
+
+@end
+
+@implementation ZLCollectionViewHorzontalLayout
+
+#pragma mark - 初始化属性
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        self.scrollDirection = UICollectionViewScrollDirectionHorizontal;
+    }
+    return self;
+}
+
+- (void)prepareLayout {
+    [super prepareLayout];
+    
+    //这里很关键，不加此判断在悬浮情况下将卡的怀疑人生...
+    if (!self.isNeedReCalculateAllLayout) {
+        return;
+    }
+    
+    CGFloat totalHeight = self.collectionView.frame.size.height;
+    CGFloat x = 0;
+    CGFloat y = 0;
+    CGFloat headerW = 0;
+    CGFloat footerW = 0;
+    UIEdgeInsets edgeInsets = UIEdgeInsetsZero;
+    CGFloat minimumLineSpacing = 0;
+    CGFloat minimumInteritemSpacing = 0;
+    NSUInteger sectionCount = [self.collectionView numberOfSections];
+    self.attributesArray = [NSMutableArray new];
+    self.collectionHeightsArray = [NSMutableArray arrayWithCapacity:sectionCount];
+    for (int index= 0; index<sectionCount; index++) {
+        NSUInteger itemCount = [self.collectionView numberOfItemsInSection:index];
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForHeaderInSection:)]) {
+            headerW = [self.delegate collectionView:self.collectionView layout:self referenceSizeForHeaderInSection:index].width;
+        } else {
+            headerW = self.headerReferenceSize.width;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForFooterInSection:)]) {
+            footerW = [self.delegate collectionView:self.collectionView layout:self referenceSizeForFooterInSection:index].width;
+        } else {
+            footerW = self.footerReferenceSize.width;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:insetForSectionAtIndex:)]) {
+            edgeInsets = [self.delegate collectionView:self.collectionView layout:self insetForSectionAtIndex:index];
+        } else {
+            edgeInsets = self.sectionInset;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:minimumLineSpacingForSectionAtIndex:)]) {
+            minimumLineSpacing = [self.delegate collectionView:self.collectionView layout:self minimumLineSpacingForSectionAtIndex:index];
+        } else {
+            minimumLineSpacing = self.minimumLineSpacing;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:minimumInteritemSpacingForSectionAtIndex:)]) {
+            minimumInteritemSpacing = [self.delegate collectionView:self.collectionView layout:self minimumInteritemSpacingForSectionAtIndex:index];
+        } else {
+            minimumInteritemSpacing = self.minimumInteritemSpacing;
+        }
+        
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:registerBackView:)]) {
+            NSString* className = [self.delegate collectionView:self.collectionView layout:self registerBackView:index];
+            if (className != nil && className.length > 0) {
+                NSAssert([[NSClassFromString(className) alloc]init]!=nil, @"代理collectionView:layout:registerBackView:里面必须返回有效的类名!");
+                [self registerClass:NSClassFromString(className) forDecorationViewOfKind:className];
+            } else {
+                [self registerClass:[ZLCollectionReusableView class] forDecorationViewOfKind:@"ZLCollectionReusableView"];
+            }
+        }
+        else {
+            [self registerClass:[ZLCollectionReusableView class] forDecorationViewOfKind:@"ZLCollectionReusableView"];
+        }
+        x = [self maxHeightWithSection:index];
+        y = edgeInsets.top;
+        
+        // 添加页首属性
+        if (headerW > 0) {
+            NSIndexPath *headerIndexPath = [NSIndexPath indexPathForItem:0 inSection:index];
+            ZLCollectionViewLayoutAttributes* headerAttr = [ZLCollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionHeader withIndexPath:headerIndexPath];
+            headerAttr.frame = CGRectMake(x, 0, headerW, self.collectionView.frame.size.height);
+            [headerAttr setValue:[NSValue valueWithCGRect:headerAttr.frame] forKey:@"orginalFrame"];
+            [self.attributesArray addObject:headerAttr];
+            [self.headerAttributesArray addObject:headerAttr];
+        }
+        
+        x += headerW ;
+        CGFloat itemStartX = x;
+        CGFloat lastX = x;
+        
+        if (itemCount > 0) {
+            x += edgeInsets.left;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:typeOfLayout:)]) {
+                self.layoutType = [self.delegate collectionView:self.collectionView layout:self typeOfLayout:index];
+            }
+            NSAssert((self.layoutType==LabelVerticalLayout||self.layoutType==ColumnLayout||self.layoutType==AbsoluteLayout), @"横向布局暂时只支持LabelVerticalLayout,ColumnLayout,AbsoluteLayout!");
+            //NSInteger columnCount = 1;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:columnCountOfSection:)]) {
+                self.columnCount = [self.delegate collectionView:self.collectionView layout:self columnCountOfSection:index];
+            }
+            // 定义一个列高数组 记录每一列的总高度
+            CGFloat *columnWidths = (CGFloat *) malloc(self.columnCount * sizeof(CGFloat));
+            CGFloat itemHeight = 0.0;
+            if (self.layoutType == ClosedLayout) {
+                for (int i=0; i<self.columnCount; i++) {
+                    columnWidths[i] = x;
+                }
+                itemHeight = (totalHeight - edgeInsets.top - edgeInsets.bottom - minimumInteritemSpacing * (self.columnCount - 1)) / self.columnCount;
+            }
+            
+            NSInteger lastColumnIndex = 0;
+            
+            NSMutableArray* arrayOfAbsolute = [NSMutableArray new]; //储存绝对定位布局的数组
+            
+            for (int i=0; i<itemCount; i++) {
+                NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:index];
+                CGSize itemSize = CGSizeZero;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:sizeForItemAtIndexPath:)]) {
+                    itemSize = [self.delegate collectionView:self.collectionView layout:self sizeForItemAtIndexPath:indexPath];
+                } else {
+                    itemSize = self.itemSize;
+                }
+                ZLCollectionViewLayoutAttributes *attributes = [ZLCollectionViewLayoutAttributes layoutAttributesForCellWithIndexPath:indexPath];
+                
+                NSInteger preRow = self.attributesArray.count - 1;
+                switch (self.layoutType) {
+#pragma mark 纵向标签布局处理
+                    case LabelVerticalLayout: {
+                        //找上一个cell
+                        if(preRow >= 0){
+                            if(i > 0) {
+                                ZLCollectionViewLayoutAttributes *preAttr = self.attributesArray[preRow];
+                                y = preAttr.frame.origin.y + preAttr.frame.size.height + minimumInteritemSpacing;
+                                if (y + itemSize.height > totalHeight - edgeInsets.bottom) {
+                                    y = edgeInsets.top;
+                                    x += itemSize.width + minimumLineSpacing;
+                                }
+                            }
+                        }
+                        attributes.frame = CGRectMake(x, y, itemSize.width, itemSize.height);
+                    }
+                        break;
+                    case LabelHorizontalLayout: {
+                        
+                    }
+                        break;
+#pragma mark 列布局处理 | 横向标签布局处理
+                    case ClosedLayout: {
+                        CGFloat max = CGFLOAT_MAX;
+                        NSInteger column = 0;
+                        if (self.columnSortType == Sequence) {
+                            column = lastColumnIndex;
+                        } else {
+                            for (int i = 0; i < self.columnCount; i++) {
+                                if (columnWidths[i] < max) {
+                                    max = columnWidths[i];
+                                    column = i;
+                                }
+                            }
+                        }
+                        CGFloat itemX = columnWidths[column];
+                        CGFloat itemY = edgeInsets.top + (itemHeight+minimumInteritemSpacing)*column;
+                        attributes.frame = CGRectMake(itemX, itemY, itemSize.width, itemHeight);
+                        columnWidths[column] += (itemSize.width + minimumLineSpacing);
+                        lastColumnIndex++;
+                        if (lastColumnIndex >= self.columnCount) {
+                            lastColumnIndex = 0;
+                        }
+                    }
+                        break;
+                    case AbsoluteLayout: {
+                        CGRect itemFrame = CGRectZero;
+                        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:rectOfItem:)]) {
+                            itemFrame = [self.delegate collectionView:self.collectionView layout:self rectOfItem:indexPath];
+                        }
+                        CGFloat absolute_x = x+itemFrame.origin.x;
+                        CGFloat absolute_y = edgeInsets.top+itemFrame.origin.y;
+                        CGFloat absolute_h = itemFrame.size.height;
+                        if ((absolute_y+absolute_h>self.collectionView.frame.size.height-edgeInsets.bottom)&&(absolute_y<self.collectionView.frame.size.height-edgeInsets.top)) {
+                            absolute_h -= (absolute_y+absolute_h-(self.collectionView.frame.size.height-edgeInsets.bottom));
+                        }
+                        CGFloat absolute_w = itemFrame.size.width;
+                        attributes.frame = CGRectMake(absolute_x, absolute_y, absolute_w, absolute_h);
+                        [arrayOfAbsolute addObject:attributes];
+                    }
+                        break;
+                    default: {
+                        
+                    }
+                        break;
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:transformOfItem:)]) {
+                    attributes.transform3D = [self.delegate collectionView:self.collectionView layout:self transformOfItem:indexPath];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:zIndexOfItem:)]) {
+                    attributes.zIndex = [self.delegate collectionView:self.collectionView layout:self zIndexOfItem:indexPath];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:alphaOfItem:)]) {
+                    attributes.alpha = [self.delegate collectionView:self.collectionView layout:self alphaOfItem:indexPath];
+                }
+                attributes.indexPath = indexPath;
+                if (self.layoutType != PercentLayout) {
+                    //if (![self.attributesArray containsObject:attributes]) {
+                    [self.attributesArray addObject:attributes];
+                    //}
+                }
+                if (self.layoutType == ClosedLayout) {
+                    CGFloat max = 0;
+                    for (int i = 0; i < self.columnCount; i++) {
+                        if (columnWidths[i] > max) {
+                            max = columnWidths[i];
+                        }
+                    }
+                    lastX = max;
+                } else if (self.layoutType == AbsoluteLayout) {
+                    if (i==itemCount-1) {
+                        for (ZLCollectionViewLayoutAttributes* attr in arrayOfAbsolute) {
+                            if (lastX < attr.frame.origin.x+attr.frame.size.width) {
+                                lastX = attr.frame.origin.x+attr.frame.size.width;
+                            }
+                        }
+                    }
+                } else {
+                    lastX = attributes.frame.origin.x + attributes.frame.size.width;
+                }
+            }
+            free(columnWidths);
+        }
+        if (self.layoutType == ClosedLayout) {
+            if (itemCount > 0) {
+                lastX -= minimumLineSpacing;
+            }
+        }
+        if (itemCount > 0) {
+            lastX += edgeInsets.right;
+        }
+        
+        // 添加页脚属性
+        if (footerW > 0) {
+            NSIndexPath *footerIndexPath = [NSIndexPath indexPathForItem:0 inSection:index];
+            ZLCollectionViewLayoutAttributes *footerAttr = [ZLCollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter withIndexPath:footerIndexPath];
+            footerAttr.frame = CGRectMake(lastX, 0, footerW, self.collectionView.frame.size.height);
+            [self.attributesArray addObject:footerAttr];
+            lastX += footerW;
+        }
+        
+#pragma mark 添加背景视图
+        CGFloat backWidth = lastX-itemStartX+([self isAttachToTop:index]?headerW:0)-([self isAttachToBottom:index]?0:footerW);
+        if (backWidth < 0) {
+            backWidth = 0;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:registerBackView:)]) {
+            NSString* className = [self.delegate collectionView:self.collectionView layout:self registerBackView:index];
+            if (className != nil && className.length > 0) {
+                ZLCollectionViewBackgroundViewLayoutAttributes *attr = [ZLCollectionViewBackgroundViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:className withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+                attr.frame = CGRectMake([self isAttachToTop:index]?itemStartX-headerW:itemStartX, 0, backWidth, self.collectionView.frame.size.height);
+                attr.zIndex = -1000;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backgroundViewMethodForSection:)]) {
+                    if ([self.delegate collectionView:self.collectionView layout:self backgroundViewMethodForSection:index] != nil) {
+                        [attr callMethod:[self.delegate collectionView:self.collectionView layout:self backgroundViewMethodForSection:index]];
+                    }
+                }
+                [self.attributesArray addObject:attr];
+            } else {
+                ZLCollectionViewLayoutAttributes *attr = [ZLCollectionViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:@"ZLCollectionReusableView" withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+                attr.frame = CGRectMake([self isAttachToTop:index]?itemStartX-headerW:itemStartX, 0, backWidth, self.collectionView.frame.size.height);
+                attr.color = self.collectionView.backgroundColor;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backColorForSection:)]) {
+                    attr.color = [self.delegate collectionView:self.collectionView layout:self backColorForSection:index];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backImageForSection:)]) {
+                    attr.image = [self.delegate collectionView:self.collectionView layout:self backImageForSection:index];
+                }
+                attr.zIndex = -1000;
+                [self.attributesArray addObject:attr];
+            }
+        } else {
+            ZLCollectionViewLayoutAttributes *attr = [ZLCollectionViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:@"ZLCollectionReusableView" withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+            attr.frame = CGRectMake([self isAttachToTop:index]?itemStartX-headerW:itemStartX, 0, backWidth, self.collectionView.frame.size.height);
+            attr.color = self.collectionView.backgroundColor;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backColorForSection:)]) {
+                attr.color = [self.delegate collectionView:self.collectionView layout:self backColorForSection:index];
+            }
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backImageForSection:)]) {
+                attr.image = [self.delegate collectionView:self.collectionView layout:self backImageForSection:index];
+            }
+            attr.zIndex = -1000;
+            [self.attributesArray addObject:attr];
+        }
+        
+        self.collectionHeightsArray[index] = [NSNumber numberWithFloat:lastX];
+    }
+    [self forceSetIsNeedReCalculateAllLayout:NO];
+//    for (int i=0; i<self.attributesArray.count; i++) {
+//        ZLCollectionViewLayoutAttributes* attr = self.attributesArray[i];
+//        NSLog(@"第%d个-----%@",i,NSStringFromCGRect(attr.frame));
+//    }
+}
+
+#pragma mark - CollectionView的滚动范围
+- (CGSize)collectionViewContentSize
+{
+    if (self.collectionHeightsArray.count <= 0) {
+        return CGSizeMake(self.collectionView.frame.size.width, self.collectionView.frame.size.height);
+    }
+    CGFloat footerW = 0.0f;
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForFooterInSection:)]) {
+        footerW = [self.delegate collectionView:self.collectionView layout:self referenceSizeForFooterInSection:self.collectionHeightsArray.count-1].width;
+    } else {
+        footerW = self.footerReferenceSize.width;
+    }
+    UIEdgeInsets edgeInsets = UIEdgeInsetsZero;
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:insetForSectionAtIndex:)]) {
+        edgeInsets = [self.delegate collectionView:self.collectionView layout:self insetForSectionAtIndex:self.collectionHeightsArray.count-1];
+    } else {
+        edgeInsets = self.sectionInset;
+    }
+    return CGSizeMake([self.collectionHeightsArray[self.collectionHeightsArray.count-1] floatValue], self.collectionView.frame.size.height);
+}
+
+/**
+ 每个区的初始X坐标
+ @param section 区索引
+ @return Y坐标
+ */
+- (CGFloat)maxHeightWithSection:(NSInteger)section {
+    if (section>0) {
+        return [self.collectionHeightsArray[section-1] floatValue];
+    } else {
+        return 0;
+    }
+}
+
+- (BOOL)isAttachToTop:(NSInteger)section {
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:attachToTop:)]) {
+        return [self.delegate collectionView:self.collectionView layout:self attachToTop:section];
+    }
+    return NO;
+}
+
+- (BOOL)isAttachToBottom:(NSInteger)section {
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:attachToBottom:)]) {
+        return [self.delegate collectionView:self.collectionView layout:self attachToBottom:section];
+    }
+    return NO;
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewLayoutAttributes.h

@@ -0,0 +1,21 @@
+//
+//  ZLCollectionViewLayoutAttributes.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/9.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface ZLCollectionViewLayoutAttributes : UICollectionViewLayoutAttributes
+
+@property(nonatomic,copy)UIColor* color;
+@property(nonatomic,copy)UIImage* image;
+
+//此属性只是header会单独设置，其他均直接返回其frame属性
+@property(nonatomic,assign,readonly)CGRect orginalFrame;
+
+
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewLayoutAttributes.m

@@ -0,0 +1,30 @@
+//
+//  ZLCollectionViewLayoutAttributes.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2018/7/9.
+//  Copyright © 2018年 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewLayoutAttributes.h"
+#import "ZLCollectionReusableView.h"
+
+@implementation ZLCollectionViewLayoutAttributes
+@synthesize orginalFrame = _orginalFrame;
+
++ (instancetype)layoutAttributesForDecorationViewOfKind:(NSString *)decorationViewKind withIndexPath:(NSIndexPath *)indexPath orginalFrmae:(CGRect)orginalFrame{
+    ZLCollectionViewLayoutAttributes *layoutAttributes = [super layoutAttributesForDecorationViewOfKind:decorationViewKind withIndexPath:indexPath];
+    [layoutAttributes setValue:[NSValue valueWithCGRect:orginalFrame] forKey:@"orginalFrame"];
+    layoutAttributes.frame = orginalFrame;
+    return layoutAttributes;
+}
+
+-(CGRect)orginalFrame {
+    if ([self.representedElementKind isEqualToString:UICollectionElementKindSectionHeader]) {
+        return _orginalFrame;
+    } else {
+        return self.frame;
+    }
+}
+
+@end

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewVerticalLayout.h

@@ -0,0 +1,17 @@
+//
+//  ZLCollectionViewVerticalLayout.h
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewBaseFlowLayout.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface ZLCollectionViewVerticalLayout : ZLCollectionViewBaseFlowLayout
+
+@end
+
+NS_ASSUME_NONNULL_END

QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewVerticalLayout.m

@@ -0,0 +1,750 @@
+//
+//  ZLCollectionViewVerticalLayout.m
+//  ZLCollectionView
+//
+//  Created by zhaoliang chen on 2019/1/25.
+//  Copyright © 2019 zhaoliang chen. All rights reserved.
+//
+
+#import "ZLCollectionViewVerticalLayout.h"
+#import "ZLCollectionReusableView.h"
+#import "ZLCollectionViewLayoutAttributes.h"
+#import "ZLCollectionViewBackgroundViewLayoutAttributes.h"
+
+@interface ZLCollectionViewVerticalLayout ()
+
+@end
+
+@implementation ZLCollectionViewVerticalLayout
+
+#pragma mark - 初始化属性
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        self.scrollDirection = UICollectionViewScrollDirectionVertical;
+    }
+    return self;
+}
+
+- (void)prepareLayout {
+    [super prepareLayout];
+    
+    //这里很关键，不加此判断在悬浮情况下将卡的怀疑人生...
+    if (!self.isNeedReCalculateAllLayout) {
+        return;
+    }
+    
+    CGFloat totalWidth = self.collectionView.frame.size.width;
+    CGFloat x = 0;
+    CGFloat y = 0;
+    CGFloat headerH = 0;
+    CGFloat footerH = 0;
+    UIEdgeInsets edgeInsets = UIEdgeInsetsZero;
+    CGFloat minimumLineSpacing = 0;
+    CGFloat minimumInteritemSpacing = 0;
+    NSUInteger sectionCount = [self.collectionView numberOfSections];
+    self.attributesArray = [NSMutableArray new];
+    [self.headerAttributesArray removeAllObjects];
+    self.collectionHeightsArray = [NSMutableArray arrayWithCapacity:sectionCount];
+    for (int index= 0; index<sectionCount; index++) {
+        NSUInteger itemCount = [self.collectionView numberOfItemsInSection:index];
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForHeaderInSection:)]) {
+            headerH = [self.delegate collectionView:self.collectionView layout:self referenceSizeForHeaderInSection:index].height;
+        } else {
+            headerH = self.headerReferenceSize.height;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForFooterInSection:)]) {
+            footerH = [self.delegate collectionView:self.collectionView layout:self referenceSizeForFooterInSection:index].height;
+        } else {
+            footerH = self.footerReferenceSize.height;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:insetForSectionAtIndex:)]) {
+            edgeInsets = [self.delegate collectionView:self.collectionView layout:self insetForSectionAtIndex:index];
+        } else {
+            edgeInsets = self.sectionInset;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:minimumLineSpacingForSectionAtIndex:)]) {
+            minimumLineSpacing = [self.delegate collectionView:self.collectionView layout:self minimumLineSpacingForSectionAtIndex:index];
+        } else {
+            minimumLineSpacing = self.minimumLineSpacing;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:minimumInteritemSpacingForSectionAtIndex:)]) {
+            minimumInteritemSpacing = [self.delegate collectionView:self.collectionView layout:self minimumInteritemSpacingForSectionAtIndex:index];
+        } else {
+            minimumInteritemSpacing = self.minimumInteritemSpacing;
+        }
+        
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:registerBackView:)]) {
+            NSString* className = [self.delegate collectionView:self.collectionView layout:self registerBackView:index];
+            if (className != nil && className.length > 0) {
+                NSAssert([[NSClassFromString(className) alloc]init]!=nil, @"代理collectionView:layout:registerBackView:里面必须返回有效的类名!");
+                [self registerClass:NSClassFromString(className) forDecorationViewOfKind:className];
+            } else {
+                [self registerClass:[ZLCollectionReusableView class] forDecorationViewOfKind:@"ZLCollectionReusableView"];
+            }
+        } else {
+            [self registerClass:[ZLCollectionReusableView class] forDecorationViewOfKind:@"ZLCollectionReusableView"];
+        }
+        x = edgeInsets.left;
+        y = [self maxHeightWithSection:index];
+        
+        // 添加页首属性
+        if (headerH > 0) {
+            NSIndexPath *headerIndexPath = [NSIndexPath indexPathForItem:0 inSection:index];
+            ZLCollectionViewLayoutAttributes* headerAttr = [ZLCollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionHeader withIndexPath:headerIndexPath];
+            headerAttr.frame = CGRectMake(0, y, self.collectionView.frame.size.width, headerH);
+            [headerAttr setValue:[NSValue valueWithCGRect:headerAttr.frame] forKey:@"orginalFrame"];
+            [self.attributesArray addObject:headerAttr];
+            [self.headerAttributesArray addObject:headerAttr];
+        }
+        
+        y += headerH ;
+        CGFloat itemStartY = y;
+        CGFloat lastY = y;
+        
+        if (itemCount > 0) {
+            y += edgeInsets.top;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:typeOfLayout:)]) {
+                self.layoutType = [self.delegate collectionView:self.collectionView layout:self typeOfLayout:index];
+            }
+            //NSInteger columnCount = 1;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:columnCountOfSection:)]) {
+                self.columnCount = [self.delegate collectionView:self.collectionView layout:self columnCountOfSection:index];
+            }
+            // 定义一个列高数组 记录每一列的总高度
+            CGFloat *columnHeight = (CGFloat *) malloc(self.columnCount * sizeof(CGFloat));
+            CGFloat itemWidth = 0.0;
+            if (self.layoutType == ClosedLayout) {
+                for (int i=0; i<self.columnCount; i++) {
+                    columnHeight[i] = y;
+                }
+                itemWidth = (totalWidth - edgeInsets.left - edgeInsets.right - minimumInteritemSpacing * (self.columnCount - 1)) / self.columnCount;
+            }
+            CGFloat maxYOfPercent = -1;
+            CGFloat maxYOfFill = y;
+            NSMutableArray* arrayOfPercent = [NSMutableArray new];  //储存百分比布局的数组
+            NSMutableArray* arrayOfFill = [NSMutableArray new];     //储存填充式布局的数组
+            NSMutableArray* arrayOfAbsolute = [NSMutableArray new]; //储存绝对定位布局的数组
+            
+            NSMutableArray *arrayXOfFill = [NSMutableArray new]; //储存填充式布局的数组
+            [arrayXOfFill addObject:self.isFloor?@(floor(edgeInsets.left)):@(edgeInsets.left)];
+            NSMutableArray *arrayYOfFill = [NSMutableArray new]; //储存填充式布局的数组
+            [arrayYOfFill addObject:self.isFloor?@(floor(maxYOfFill)):@(maxYOfFill)];
+            
+            NSInteger lastColumnIndex = 0;
+            
+            for (int i=0; i<itemCount; i++) {
+                BOOL singleColumnCount = NO;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:singleColumnCountOfIndexPath:)]) {
+                    singleColumnCount = [self.delegate collectionView:self.collectionView
+                                                               layout:self
+                                         singleColumnCountOfIndexPath:[NSIndexPath indexPathForItem:i inSection:index]];
+                }
+                
+                NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:index];
+                CGSize itemSize = CGSizeZero;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:sizeForItemAtIndexPath:)]) {
+                    itemSize = [self.delegate collectionView:self.collectionView layout:self sizeForItemAtIndexPath:indexPath];
+                } else {
+                    itemSize = self.itemSize;
+                }
+                ZLCollectionViewLayoutAttributes *attributes = [ZLCollectionViewLayoutAttributes layoutAttributesForCellWithIndexPath:indexPath];
+                
+                NSInteger preRow = self.attributesArray.count - 1;
+                switch (self.layoutType) {
+#pragma mark 标签布局处理
+                    case LabelLayout: {
+                        //找上一个cell
+                        if(preRow >= 0){
+                            if(i > 0) {
+                                ZLCollectionViewLayoutAttributes *preAttr = self.attributesArray[preRow];
+                                x = preAttr.frame.origin.x + preAttr.frame.size.width + minimumInteritemSpacing;
+                                if (x + itemSize.width > totalWidth - edgeInsets.right) {
+                                    x = edgeInsets.left;
+                                    y += itemSize.height + minimumLineSpacing;
+                                }
+                            }
+                        }
+                        if (itemSize.width > (totalWidth-edgeInsets.left-edgeInsets.right)) {
+                            itemSize.width = (totalWidth-edgeInsets.left-edgeInsets.right);
+                        }
+                        attributes.frame = CGRectMake(x, y, itemSize.width, itemSize.height);
+                    }
+                        break;
+#pragma mark 列布局处理
+                    case ClosedLayout: {
+                        if (singleColumnCount) {
+                            CGFloat max = 0;
+                            for (int i = 0; i < self.columnCount; i++) {
+                                if (columnHeight[i] > max) {
+                                    max = columnHeight[i];
+                                }
+                            }
+                            CGFloat itemX = 0;
+                            CGFloat itemY = max;
+                            attributes.frame = CGRectMake(edgeInsets.left + itemX, itemY, totalWidth-edgeInsets.left-edgeInsets.right, itemSize.height);
+                            for (int i = 0; i < self.columnCount; i++) {
+                                columnHeight[i] = max + itemSize.height + minimumLineSpacing;
+                            }
+                            lastColumnIndex = 0;
+                        } else {
+                            CGFloat max = CGFLOAT_MAX;
+                            NSInteger column = 0;
+                            if (self.columnSortType == Sequence) {
+                                column = lastColumnIndex;
+                            } else {
+                                for (int i = 0; i < self.columnCount; i++) {
+                                    if (columnHeight[i] < max) {
+                                        max = columnHeight[i];
+                                        column = i;
+                                    }
+                                }
+                            }
+                            CGFloat itemX = edgeInsets.left + (itemWidth+minimumInteritemSpacing)*column;
+                            CGFloat itemY = columnHeight[column];
+                            attributes.frame = CGRectMake(itemX, itemY, itemWidth, itemSize.height);
+                            columnHeight[column] += (itemSize.height + minimumLineSpacing);
+                            lastColumnIndex++;
+                            if (lastColumnIndex >= self.columnCount) {
+                                lastColumnIndex = 0;
+                            }
+                        }
+                    }
+                        break;
+#pragma mark 百分比布局处理
+                    case PercentLayout: {
+                        CGFloat percent = 0.0f;
+                        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:percentOfRow:)]) {
+                            percent = [self.delegate collectionView:self.collectionView layout:self percentOfRow:indexPath];
+                        } else {
+                            percent = 1;
+                        }
+                        if (percent > 1 || percent <= 0) {
+                            percent = 1;
+                        }
+                        
+                        if (arrayOfPercent.count > 0) {
+                            CGFloat totalPercent = 0;
+                            for (NSDictionary* dic in arrayOfPercent) {
+                                totalPercent += [dic[@"percent"] floatValue];
+                            }
+                            if ((totalPercent+percent) >= 1.0) {
+                                if ((totalPercent+percent) < 1.1) {
+                                    //小于1.1就当成一行来计算
+                                    //先添加进总的数组
+                                    attributes.indexPath = indexPath;
+                                    attributes.frame = CGRectMake(0, 0, (itemSize.width>self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right)?self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right:itemSize.width, itemSize.height);
+                                    //再添加进计算比例的数组
+                                    [arrayOfPercent addObject:[NSMutableDictionary dictionaryWithDictionary:@{@"item":attributes,@"percent":[NSNumber numberWithFloat:percent],@"indexPath":indexPath}]];
+                                    if ((totalPercent+percent) > 1) {
+                                        NSMutableDictionary* lastDic = [NSMutableDictionary dictionaryWithDictionary:arrayOfPercent.lastObject];
+                                        CGFloat lastPercent = 1.0;
+                                        for (NSInteger i=0; i<arrayOfPercent.count-1; i++) {
+                                            NSMutableDictionary* dic = arrayOfPercent[i];
+                                            lastPercent -= [dic[@"percent"] floatValue];
+                                        }
+                                        lastDic[@"percent"] = [NSNumber numberWithFloat:lastPercent];
+                                        [arrayOfPercent replaceObjectAtIndex:arrayOfPercent.count-1 withObject:lastDic];
+                                    }
+                                    
+                                    CGFloat realWidth = totalWidth - edgeInsets.left - edgeInsets.right - (arrayOfPercent.count-1)*minimumInteritemSpacing;
+                                    for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                        NSDictionary* dic = arrayOfPercent[i];
+                                        ZLCollectionViewLayoutAttributes *newAttributes = dic[@"item"];
+                                        CGFloat itemX = 0.0f;
+                                        if (i==0) {
+                                            itemX = edgeInsets.left;
+                                        } else {
+                                            ZLCollectionViewLayoutAttributes *preAttr = arrayOfPercent[i-1][@"item"];
+                                            itemX = preAttr.frame.origin.x + preAttr.frame.size.width + minimumInteritemSpacing;
+                                        }
+                                        newAttributes.frame = CGRectMake(itemX, (maxYOfPercent==-1)?y:maxYOfPercent+minimumLineSpacing, realWidth*[dic[@"percent"] floatValue], newAttributes.frame.size.height);
+                                        newAttributes.indexPath = dic[@"indexPath"];
+                                        //if (![self.attributesArray containsObject:newAttributes]) {
+                                        [self.attributesArray addObject:newAttributes];
+                                        //}
+                                    }
+                                    for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                        NSDictionary* dic = arrayOfPercent[i];
+                                        ZLCollectionViewLayoutAttributes *item = dic[@"item"];
+                                        if ((item.frame.origin.y + item.frame.size.height) > maxYOfPercent) {
+                                            maxYOfPercent = (item.frame.origin.y + item.frame.size.height);
+                                        }
+                                    }
+                                    [arrayOfPercent removeAllObjects];
+                                }
+                                else {
+                                    //先添加进总的数组
+                                    if (arrayOfPercent.count > 0) {
+                                        for (int i=0; i<arrayOfPercent.count; i++) {
+                                            NSDictionary* dic = arrayOfPercent[i];
+                                            ZLCollectionViewLayoutAttributes* attr = dic[@"item"];
+                                            if ((attr.frame.origin.y+attr.frame.size.height) > maxYOfPercent ) {
+                                                maxYOfPercent = attr.frame.origin.y+attr.frame.size.height;
+                                            }
+                                        }
+                                    }
+                                    attributes.indexPath = indexPath;
+                                    attributes.frame = CGRectMake(edgeInsets.left, maxYOfPercent, (itemSize.width>self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right)?self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right:itemSize.width, itemSize.height);
+                                    for (int i=0; i<arrayOfPercent.count; i++) {
+                                        NSDictionary* dic = arrayOfPercent[i];
+                                        ZLCollectionViewLayoutAttributes* attr = dic[@"item"];
+                                        attr.indexPath = dic[@"indexPath"];
+                                        [self.attributesArray addObject:attr];
+                                    }
+                                    [arrayOfPercent removeAllObjects];
+                                    //再添加进计算比例的数组
+                                    [arrayOfPercent addObject:[NSMutableDictionary dictionaryWithDictionary:@{@"item":attributes,@"percent":[NSNumber numberWithFloat:percent],@"indexPath":indexPath}]];
+                                    //如果该行item总比例还是小于1，但是item已经是最后一个
+                                    if (i==itemCount-1) {
+                                        CGFloat realWidth = totalWidth - edgeInsets.left - edgeInsets.right - (arrayOfPercent.count-1)*minimumInteritemSpacing;
+                                        for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                            NSDictionary* dic = arrayOfPercent[i];
+                                            ZLCollectionViewLayoutAttributes *newAttributes = dic[@"item"];
+                                            CGFloat itemX = 0.0f;
+                                            if (i==0) {
+                                                itemX = edgeInsets.left;
+                                            } else {
+                                                ZLCollectionViewLayoutAttributes *preAttr = arrayOfPercent[i-1][@"item"];
+                                                itemX = preAttr.frame.origin.x + preAttr.frame.size.width + minimumInteritemSpacing;
+                                            }
+                                            newAttributes.frame = CGRectMake(itemX, (maxYOfPercent==-1)?y:maxYOfPercent+minimumLineSpacing, realWidth*[dic[@"percent"] floatValue], newAttributes.frame.size.height);
+                                            newAttributes.indexPath = dic[@"indexPath"];
+                                            [self.attributesArray addObject:newAttributes];
+                                        }
+                                        for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                            NSDictionary* dic = arrayOfPercent[i];
+                                            ZLCollectionViewLayoutAttributes *item = dic[@"item"];
+                                            if ((item.frame.origin.y + item.frame.size.height) > maxYOfPercent) {
+                                                maxYOfPercent = (item.frame.origin.y + item.frame.size.height);
+                                            }
+                                        }
+                                        [arrayOfPercent removeAllObjects];
+                                    }
+                                }
+                            }
+                            else {
+                                //先添加进总的数组
+                                attributes.indexPath = indexPath;
+                                NSDictionary* lastDicForPercent = arrayOfPercent[arrayOfPercent.count-1];
+                                ZLCollectionViewLayoutAttributes *lastAttributesForPercent = lastDicForPercent[@"item"];
+                                attributes.frame = CGRectMake(lastAttributesForPercent.frame.origin.x+lastAttributesForPercent.frame.size.width+minimumInteritemSpacing, lastAttributesForPercent.frame.origin.y, itemSize.width, itemSize.height);
+                                //再添加进计算比例的数组
+                                [arrayOfPercent addObject:[NSMutableDictionary dictionaryWithDictionary:@{@"item":attributes,@"percent":[NSNumber numberWithFloat:percent],@"indexPath":indexPath}]];
+                                //如果已经是最后一个
+                                if (i==itemCount-1) {
+                                    NSInteger space = arrayOfPercent.count-1;
+                                    if (arrayOfPercent.count > 0) {
+                                        NSDictionary* dic = arrayOfPercent[0];
+                                        BOOL equal = YES;
+                                        for (NSDictionary* d in arrayOfPercent) {
+                                            if ([dic[@"percent"] floatValue] != [d[@"percent"] floatValue]) {
+                                                equal = NO;
+                                                break;
+                                            }
+                                        }
+                                        if (equal == YES) {
+                                            space = (1/([dic[@"percent"] floatValue]))-1;
+                                        }
+                                    }
+                                    CGFloat realWidth = totalWidth - edgeInsets.left - edgeInsets.right - space*minimumInteritemSpacing;
+                                    for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                        NSDictionary* dic = arrayOfPercent[i];
+                                        ZLCollectionViewLayoutAttributes *newAttributes = dic[@"item"];
+                                        CGFloat itemX = 0.0f;
+                                        if (i==0) {
+                                            itemX = edgeInsets.left;
+                                        } else {
+                                            ZLCollectionViewLayoutAttributes *preAttr = arrayOfPercent[i-1][@"item"];
+                                            itemX = preAttr.frame.origin.x + preAttr.frame.size.width + minimumInteritemSpacing;
+                                        }
+                                        newAttributes.frame = CGRectMake(itemX, (maxYOfPercent==-1)?y:maxYOfPercent+minimumLineSpacing, realWidth*[dic[@"percent"] floatValue], newAttributes.frame.size.height);
+                                        newAttributes.indexPath = dic[@"indexPath"];
+                                        //if (![self.attributesArray containsObject:newAttributes]) {
+                                        [self.attributesArray addObject:newAttributes];
+                                        //}
+                                    }
+                                    for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                        NSDictionary* dic = arrayOfPercent[i];
+                                        ZLCollectionViewLayoutAttributes *item = dic[@"item"];
+                                        if ((item.frame.origin.y + item.frame.size.height) > maxYOfPercent) {
+                                            maxYOfPercent = (item.frame.origin.y + item.frame.size.height);
+                                        }
+                                    }
+                                    [arrayOfPercent removeAllObjects];
+                                } else {
+                                    
+                                }
+                            }
+                        }
+                        else {
+                            //先添加进总的数组
+                            attributes.indexPath = indexPath;
+                            attributes.frame = CGRectMake(edgeInsets.left, (maxYOfPercent==-1)?y:maxYOfPercent+minimumLineSpacing, (itemSize.width>self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right)?self.collectionView.frame.size.width-edgeInsets.left-edgeInsets.right:itemSize.width, itemSize.height);
+                            //再添加进计算比例的数组
+                            [arrayOfPercent addObject:[NSMutableDictionary dictionaryWithDictionary:@{@"item":attributes,@"percent":[NSNumber numberWithFloat:percent],@"indexPath":indexPath}]];
+                            //如果已经是最后一个
+                            if (i==itemCount-1) {
+                                NSInteger space = arrayOfPercent.count-1;
+                                if (arrayOfPercent.count > 0) {
+                                    NSDictionary* dic = arrayOfPercent[0];
+                                    BOOL equal = YES;
+                                    for (NSDictionary* d in arrayOfPercent) {
+                                        if ([dic[@"percent"] floatValue] != [d[@"percent"] floatValue]) {
+                                            equal = NO;
+                                            break;
+                                        }
+                                    }
+                                    if (equal == YES) {
+                                        space = (1/([dic[@"percent"] floatValue]))-1;
+                                    }
+                                }
+                                CGFloat realWidth = totalWidth - edgeInsets.left - edgeInsets.right - space*minimumInteritemSpacing;
+                                for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                    NSDictionary* dic = arrayOfPercent[i];
+                                    ZLCollectionViewLayoutAttributes *newAttributes = dic[@"item"];
+                                    CGFloat itemX = 0.0f;
+                                    if (i==0) {
+                                        itemX = edgeInsets.left;
+                                    } else {
+                                        ZLCollectionViewLayoutAttributes *preAttr = arrayOfPercent[i-1][@"item"];
+                                        itemX = preAttr.frame.origin.x + preAttr.frame.size.width + minimumInteritemSpacing;
+                                    }
+                                    newAttributes.frame = CGRectMake(itemX, (maxYOfPercent==-1)?y:maxYOfPercent+minimumLineSpacing, realWidth*[dic[@"percent"] floatValue], newAttributes.frame.size.height);
+                                    newAttributes.indexPath = dic[@"indexPath"];
+                                    [self.attributesArray addObject:newAttributes];
+                                }
+                                for (NSInteger i=0; i<arrayOfPercent.count; i++) {
+                                    NSDictionary* dic = arrayOfPercent[i];
+                                    ZLCollectionViewLayoutAttributes *item = dic[@"item"];
+                                    if ((item.frame.origin.y + item.frame.size.height) > maxYOfPercent) {
+                                        maxYOfPercent = (item.frame.origin.y + item.frame.size.height);
+                                    }
+                                }
+                                [arrayOfPercent removeAllObjects];
+                            } else {
+                                
+                            }
+                        }
+                    }
+                        break;
+#pragma mark 填充布局处理
+                    case FillLayout: {
+                        BOOL qualified = YES;
+                        if (arrayOfFill.count == 0) {
+                            attributes.frame = CGRectMake(self.isFloor?floor(edgeInsets.left):edgeInsets.left, self.isFloor?floor(maxYOfFill):maxYOfFill, self.isFloor?floor(itemSize.width):itemSize.width, self.isFloor?floor(itemSize.height):itemSize.height);
+                            [arrayOfFill addObject:attributes];
+                        } else {
+                            BOOL leftQualified = NO;
+                            BOOL topQualified = NO;
+                            for (NSNumber* yFill in arrayYOfFill) {
+                                for (NSNumber* xFill in arrayXOfFill) {
+                                    qualified = YES;
+                                    CGFloat attrX = self.isFloor?(floor([xFill floatValue])==floor(edgeInsets.left)?floor([xFill floatValue]):(floor([xFill floatValue])+minimumInteritemSpacing)):([xFill floatValue]==edgeInsets.left?[xFill floatValue]:([xFill floatValue]+minimumInteritemSpacing));
+                                    CGFloat attrY = (fabs([yFill floatValue] - maxYOfFill) < 0.0001) ? [yFill floatValue] : [yFill floatValue] + minimumLineSpacing;
+                                    if (self.isFloor) {
+                                        attrY = floor([yFill floatValue])==floor(maxYOfFill)?floor([yFill floatValue]):floor([yFill floatValue])+floor(minimumLineSpacing);
+                                    }
+                                    attributes.frame = CGRectMake(attrX, attrY, self.isFloor?floor(itemSize.width):itemSize.width, self.isFloor?floor(itemSize.height):itemSize.height);
+                                    if (self.isFloor) {
+                                        if (floor(attributes.frame.origin.x)+floor(attributes.frame.size.width) > floor(totalWidth)-floor(edgeInsets.right)) {
+                                            qualified = NO;
+                                            break;
+                                        }
+                                    } else {
+                                        if (attributes.frame.origin.x+attributes.frame.size.width > totalWidth-edgeInsets.right+self.xBeyond) {
+                                            qualified = NO;
+                                            break;
+                                        }
+                                    }
+                                    for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                                        if (CGRectIntersectsRect(attributes.frame, attr.frame)) {
+                                            qualified = NO;
+                                            break;
+                                        }
+                                    }
+                                    if (qualified == NO) {
+                                        continue;
+                                    } else {
+                                        // 对比左侧的cell
+                                        CGPoint leftPt = CGPointMake(attributes.frame.origin.x - floor(minimumInteritemSpacing), attributes.frame.origin.y);
+                                        CGRect leftRect = CGRectZero;
+                                        for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                                            if (CGRectContainsPoint(attr.frame, leftPt)) {
+                                                leftRect = attr.frame;
+                                                break;
+                                            }
+                                        }
+                                        if (CGRectEqualToRect(leftRect, CGRectZero)) {
+                                            leftQualified = YES;
+                                        } else {
+                                            if (attributes.frame.origin.x - (leftRect.origin.x + leftRect.size.width) >= floor(minimumInteritemSpacing)) {
+                                                leftQualified = YES;
+                                            } else if (floor(leftRect.origin.x) + floor(leftRect.size.width) <= leftPt.x) {
+                                                leftQualified = YES;
+                                            } else {
+                                                CGRect rc = attributes.frame;
+                                                rc.origin.x = leftRect.origin.x + leftRect.size.width + floor(minimumInteritemSpacing);
+                                                attributes.frame = rc;
+                                                for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                                                    if (CGRectIntersectsRect(attributes.frame, attr.frame)) {
+                                                        qualified = NO;
+                                                        break;
+                                                    }
+                                                }
+                                            }
+                                        }
+                                        
+                                        // 对比上侧的cell
+                                        CGPoint topPt = CGPointMake(attributes.frame.origin.x, attributes.frame.origin.y - floor(minimumLineSpacing));
+                                        CGRect topRect = CGRectZero;
+                                        for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                                            if (CGRectContainsPoint(attr.frame, topPt)) {
+                                                topRect = attr.frame;
+                                                break;
+                                            }
+                                        }
+                                        if (CGRectEqualToRect(topRect, CGRectZero)) {
+                                            topQualified = YES;
+                                        } else {
+                                            if (attributes.frame.origin.y - (topRect.origin.y + topRect.size.height) >= floor(minimumLineSpacing)) {
+                                                topQualified = YES;
+                                            } else if (floor(topRect.origin.y) + floor(topRect.size.height) <= topPt.y) {
+                                                topQualified = YES;
+                                            } else {
+                                                CGRect rc = attributes.frame;
+                                                rc.origin.y = topRect.origin.y + topRect.size.height + floor(minimumLineSpacing);
+                                                attributes.frame = rc;
+                                                for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                                                    if (CGRectIntersectsRect(attributes.frame, attr.frame)) {
+                                                        qualified = NO;
+                                                        break;
+                                                    }
+                                                }
+                                            }
+                                        }
+                                        if (leftQualified == YES && topQualified == YES) {
+                                            qualified = YES;
+                                            break;
+                                        }
+                                    }
+                                }
+                                if (qualified == YES) {
+                                    break;
+                                }
+                            }
+                            if (qualified == YES) {
+                                //NSLog(@"第%d个,合格的矩形区域=%@",i,NSStringFromCGRect(attributes.frame));
+                                [arrayOfFill addObject:attributes];
+                            }
+                        }
+                        if (qualified == YES) {
+                            if (![arrayXOfFill containsObject:self.isFloor?@(floor(attributes.frame.origin.x)):@(attributes.frame.origin.x)]) {
+                                [arrayXOfFill addObject:self.isFloor?@(floor(attributes.frame.origin.x)):@(attributes.frame.origin.x)];
+                            }
+                            if (![arrayXOfFill containsObject:self.isFloor?@(floor(attributes.frame.origin.x+attributes.frame.size.width)):@(attributes.frame.origin.x+attributes.frame.size.width)]) {
+                                [arrayXOfFill addObject:self.isFloor?@(floor(attributes.frame.origin.x+attributes.frame.size.width)):@(attributes.frame.origin.x+attributes.frame.size.width)];
+                            }
+                            if (![arrayYOfFill containsObject:self.isFloor?@(floor(attributes.frame.origin.y)):@(attributes.frame.origin.y)]) {
+                                [arrayYOfFill addObject:self.isFloor?@(floor(attributes.frame.origin.y)):@(attributes.frame.origin.y)];
+                            }
+                            if (![arrayYOfFill containsObject:self.isFloor?@(floor(attributes.frame.origin.y+attributes.frame.size.height)):@(attributes.frame.origin.y+attributes.frame.size.height)]) {
+                                [arrayYOfFill addObject:self.isFloor?@(floor(attributes.frame.origin.y+attributes.frame.size.height)):@(attributes.frame.origin.y+attributes.frame.size.height)];
+                            }
+                            [arrayXOfFill sortUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
+                                return [obj1 floatValue] > [obj2 floatValue];
+                            }];
+                            [arrayYOfFill sortUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
+                                return [obj1 floatValue] > [obj2 floatValue];
+                            }];
+                        }
+                    }
+                        break;
+#pragma mark 绝对定位布局处理
+                    case AbsoluteLayout: {
+                        CGRect itemFrame = CGRectZero;
+                        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:rectOfItem:)]) {
+                            itemFrame = [self.delegate collectionView:self.collectionView layout:self rectOfItem:indexPath];
+                        }
+                        CGFloat absolute_x = edgeInsets.left+itemFrame.origin.x;
+                        CGFloat absolute_y = y+itemFrame.origin.y;
+                        CGFloat absolute_w = itemFrame.size.width;
+                        if ((absolute_x+absolute_w>self.collectionView.frame.size.width-edgeInsets.right)&&(absolute_x<self.collectionView.frame.size.width-edgeInsets.right)) {
+                            absolute_w -= (absolute_x+absolute_w-(self.collectionView.frame.size.width-edgeInsets.right));
+                        }
+                        CGFloat absolute_h = itemFrame.size.height;
+                        attributes.frame = CGRectMake(absolute_x, absolute_y, absolute_w, absolute_h);
+                        [arrayOfAbsolute addObject:attributes];
+                    }
+                        break;
+                    default: {
+                        //NSLog(@"%@",NSStringFromCGRect(attributes.frame));
+                    }
+                        break;
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:transformOfItem:)]) {
+                    attributes.transform3D = [self.delegate collectionView:self.collectionView layout:self transformOfItem:indexPath];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:zIndexOfItem:)]) {
+                    attributes.zIndex = [self.delegate collectionView:self.collectionView layout:self zIndexOfItem:indexPath];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:alphaOfItem:)]) {
+                    attributes.alpha = [self.delegate collectionView:self.collectionView layout:self alphaOfItem:indexPath];
+                }
+                attributes.indexPath = indexPath;
+                if (self.layoutType != PercentLayout) {
+                    //if (![self.attributesArray containsObject:attributes]) {
+                    [self.attributesArray addObject:attributes];
+                    //}
+                }
+                if (self.layoutType == ClosedLayout) {
+                    CGFloat max = 0;
+                    for (int i = 0; i < self.columnCount; i++) {
+                        if (columnHeight[i] > max) {
+                            max = columnHeight[i];
+                        }
+                    }
+                    lastY = max;
+                } else if (self.layoutType == PercentLayout) {
+                    lastY = maxYOfPercent;
+                } else if (self.layoutType == FillLayout) {
+                    if (i==itemCount-1) {
+                        for (ZLCollectionViewLayoutAttributes* attr in arrayOfFill) {
+                            if (maxYOfFill < attr.frame.origin.y+attr.frame.size.height) {
+                                maxYOfFill = attr.frame.origin.y+attr.frame.size.height;
+                            }
+                        }
+                    }
+                    lastY = maxYOfFill;
+                } else if (self.layoutType == AbsoluteLayout) {
+                    if (i==itemCount-1) {
+                        for (ZLCollectionViewLayoutAttributes* attr in arrayOfAbsolute) {
+                            if (lastY < attr.frame.origin.y+attr.frame.size.height) {
+                                lastY = attr.frame.origin.y+attr.frame.size.height;
+                            }
+                        }
+                    }
+                } else {
+                    lastY = attributes.frame.origin.y + attributes.frame.size.height;
+                }
+            }
+            free(columnHeight);
+        }
+        if (self.layoutType == ClosedLayout) {
+            if (itemCount > 0) {
+                lastY -= minimumLineSpacing;
+            }
+        }
+        if (itemCount > 0) {
+            lastY += edgeInsets.bottom;
+        }
+        
+        // 添加页脚属性
+        if (footerH > 0) {
+            NSIndexPath *footerIndexPath = [NSIndexPath indexPathForItem:0 inSection:index];
+            ZLCollectionViewLayoutAttributes *footerAttr = [ZLCollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter withIndexPath:footerIndexPath];
+            footerAttr.frame = CGRectMake(0, lastY, self.collectionView.frame.size.width, footerH);
+            [self.attributesArray addObject:footerAttr];
+            lastY += footerH;
+        }
+#pragma mark 添加背景图
+        CGFloat backHeight = lastY-itemStartY+([self isAttachToTop:index]?headerH:0)-([self isAttachToBottom:index]?0:footerH);
+        if (backHeight < 0) {
+            backHeight = 0;
+        }
+        if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:registerBackView:)]) {
+            NSString* className = [self.delegate collectionView:self.collectionView layout:self registerBackView:index];
+            if (className != nil && className.length > 0) {
+                ZLCollectionViewBackgroundViewLayoutAttributes *attr = [ZLCollectionViewBackgroundViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:className withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+                attr.frame = CGRectMake(0, [self isAttachToTop:index]?itemStartY-headerH:itemStartY, self.collectionView.frame.size.width, backHeight);
+                attr.zIndex = -1000;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backgroundViewMethodForSection:)]) {
+                    if ([self.delegate collectionView:self.collectionView layout:self backgroundViewMethodForSection:index] != nil) {
+                        [attr callMethod:[self.delegate collectionView:self.collectionView layout:self backgroundViewMethodForSection:index]];
+                    }
+                }
+                [self.attributesArray addObject:attr];
+            } else {
+                ZLCollectionViewLayoutAttributes *attr = [ZLCollectionViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:@"ZLCollectionReusableView" withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+                attr.frame = CGRectMake(0, [self isAttachToTop:index]?itemStartY-headerH:itemStartY, self.collectionView.frame.size.width, backHeight);
+                attr.color = self.collectionView.backgroundColor;
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backColorForSection:)]) {
+                    attr.color = [self.delegate collectionView:self.collectionView layout:self backColorForSection:index];
+                }
+                if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backImageForSection:)]) {
+                    attr.image = [self.delegate collectionView:self.collectionView layout:self backImageForSection:index];
+                }
+                attr.zIndex = -1000;
+                [self.attributesArray addObject:attr];
+            }
+        } else {
+            ZLCollectionViewLayoutAttributes *attr = [ZLCollectionViewLayoutAttributes  layoutAttributesForDecorationViewOfKind:@"ZLCollectionReusableView" withIndexPath:[NSIndexPath indexPathForRow:0 inSection:index]];
+            attr.frame = CGRectMake(0, [self isAttachToTop:index]?itemStartY-headerH:itemStartY, self.collectionView.frame.size.width, backHeight);
+            attr.color = self.collectionView.backgroundColor;
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backColorForSection:)]) {
+                attr.color = [self.delegate collectionView:self.collectionView layout:self backColorForSection:index];
+            }
+            if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:backImageForSection:)]) {
+                attr.image = [self.delegate collectionView:self.collectionView layout:self backImageForSection:index];
+            }
+            attr.zIndex = -1000;
+            [self.attributesArray addObject:attr];
+        }
+        self.collectionHeightsArray[index] = [NSNumber numberWithFloat:lastY];
+    }
+//    for (ZLCollectionViewLayoutAttributes* attr in self.attributesArray) {
+//        NSLog(@"类型=%@,尺寸=%@",attr.representedElementKind, NSStringFromCGRect(attr.frame));
+//    }
+    [self forceSetIsNeedReCalculateAllLayout:NO];
+}
+
+#pragma mark - CollectionView的滚动范围
+- (CGSize)collectionViewContentSize
+{
+    if (self.collectionHeightsArray.count <= 0) {
+        return CGSizeMake(self.collectionView.frame.size.width, self.collectionView.frame.size.height);
+    }
+    CGFloat footerH = 0.0f;
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForFooterInSection:)]) {
+        footerH = [self.delegate collectionView:self.collectionView layout:self referenceSizeForFooterInSection:self.collectionHeightsArray.count-1].height;
+    } else {
+        footerH = self.footerReferenceSize.height;
+    }
+    UIEdgeInsets edgeInsets = UIEdgeInsetsZero;
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:insetForSectionAtIndex:)]) {
+        edgeInsets = [self.delegate collectionView:self.collectionView layout:self insetForSectionAtIndex:self.collectionHeightsArray.count-1];
+    } else {
+        edgeInsets = self.sectionInset;
+    }
+    return CGSizeMake(self.collectionView.frame.size.width, [self.collectionHeightsArray[self.collectionHeightsArray.count-1] floatValue]);// + edgeInsets.bottom + footerH);
+    
+}
+
+/**
+ 每个区的初始Y坐标
+ @param section 区索引
+ @return Y坐标
+ */
+- (CGFloat)maxHeightWithSection:(NSInteger)section {
+    if (section>0) {
+        return [self.collectionHeightsArray[section-1] floatValue];
+    } else {
+        return 0;
+    }
+}
+
+- (BOOL)isAttachToTop:(NSInteger)section {
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:attachToTop:)]) {
+        return [self.delegate collectionView:self.collectionView layout:self attachToTop:section];
+    }
+    return NO;
+}
+
+- (BOOL)isAttachToBottom:(NSInteger)section {
+    if (self.delegate && [self.delegate respondsToSelector:@selector(collectionView:layout:attachToBottom:)]) {
+        return [self.delegate collectionView:self.collectionView layout:self attachToBottom:section];
+    }
+    return NO;
+}
+
+@end