├── 6pssss.gif ├── CustomerCollectionView ├── CustomerCollectionView.xcodeproj │ ├── project.xcworkspace │ │ └── contents.xcworkspacedata │ └── project.pbxproj ├── CustomerCollectionView │ ├── ViewController.h │ ├── AppDelegate.h │ ├── main.m │ ├── Assets.xcassets │ │ └── AppIcon.appiconset │ │ │ └── Contents.json │ ├── Info.plist │ ├── WHCWaterFlowLayout │ │ ├── WHCWaterfallFlowLayout.h │ │ └── WHCWaterfallFlowLayout.m │ ├── Base.lproj │ │ ├── Main.storyboard │ │ └── LaunchScreen.storyboard │ ├── AppDelegate.m │ └── ViewController.m ├── CustomerCollectionViewTests │ ├── Info.plist │ └── CustomerCollectionViewTests.m └── CustomerCollectionViewUITests │ ├── Info.plist │ └── CustomerCollectionViewUITests.m ├── README.md └── .gitignore /6pssss.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Wanghongchao12138/CustomerCollectionView/HEAD/6pssss.gif -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/ViewController.h: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.h 3 | // CustomerCollectionView 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface ViewController : UIViewController 12 | 13 | 14 | @end 15 | 16 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/AppDelegate.h: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.h 3 | // CustomerCollectionView 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface AppDelegate : UIResponder 12 | 13 | @property (strong, nonatomic) UIWindow *window; 14 | 15 | 16 | @end 17 | 18 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/main.m: -------------------------------------------------------------------------------- 1 | // 2 | // main.m 3 | // CustomerCollectionView 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | #import "AppDelegate.h" 11 | 12 | int main(int argc, char * argv[]) { 13 | @autoreleasepool { 14 | return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionViewTests/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | BNDL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | 22 | 23 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionViewUITests/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | BNDL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | 22 | 23 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # CustomerCollectionView 2 | 自定义瀑布流（可添加自定义header和footer） 3 | 4 | ![image](https://github.com/Wanghongchao12138/CustomerCollectionView/blob/master/6pssss.gif) 5 | 6 | /* 7 | 设置cell 的宽高 8 | */ 9 | - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout heightForWidth:(CGFloat)width atIndexPath:(NSIndexPath*)indexPath; 10 | 11 | /* 12 | 设置collection 的头视图的size 13 | */ 14 | - (CGSize)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section; 15 | 16 | /* 17 | 设置collection footer 视图的size 18 | */ 19 | - (CGSize)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section; 20 | 21 | -- colCount -- 设置CollectionView 的cell 的列数 22 | -- sectionInset -- 设置cell 的间距 23 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionViewTests/CustomerCollectionViewTests.m: -------------------------------------------------------------------------------- 1 | // 2 | // CustomerCollectionViewTests.m 3 | // CustomerCollectionViewTests 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface CustomerCollectionViewTests : XCTestCase 12 | 13 | @end 14 | 15 | @implementation CustomerCollectionViewTests 16 | 17 | - (void)setUp { 18 | [super setUp]; 19 | // Put setup code here. This method is called before the invocation of each test method in the class. 20 | } 21 | 22 | - (void)tearDown { 23 | // Put teardown code here. This method is called after the invocation of each test method in the class. 24 | [super tearDown]; 25 | } 26 | 27 | - (void)testExample { 28 | // This is an example of a functional test case. 29 | // Use XCTAssert and related functions to verify your tests produce the correct results. 30 | } 31 | 32 | - (void)testPerformanceExample { 33 | // This is an example of a performance test case. 34 | [self measureBlock:^{ 35 | // Put the code you want to measure the time of here. 36 | }]; 37 | } 38 | 39 | @end 40 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "iphone", 5 | "size" : "29x29", 6 | "scale" : "2x" 7 | }, 8 | { 9 | "idiom" : "iphone", 10 | "size" : "29x29", 11 | "scale" : "3x" 12 | }, 13 | { 14 | "idiom" : "iphone", 15 | "size" : "40x40", 16 | "scale" : "2x" 17 | }, 18 | { 19 | "idiom" : "iphone", 20 | "size" : "40x40", 21 | "scale" : "3x" 22 | }, 23 | { 24 | "idiom" : "iphone", 25 | "size" : "60x60", 26 | "scale" : "2x" 27 | }, 28 | { 29 | "idiom" : "iphone", 30 | "size" : "60x60", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "idiom" : "ipad", 35 | "size" : "29x29", 36 | "scale" : "1x" 37 | }, 38 | { 39 | "idiom" : "ipad", 40 | "size" : "29x29", 41 | "scale" : "2x" 42 | }, 43 | { 44 | "idiom" : "ipad", 45 | "size" : "40x40", 46 | "scale" : "1x" 47 | }, 48 | { 49 | "idiom" : "ipad", 50 | "size" : "40x40", 51 | "scale" : "2x" 52 | }, 53 | { 54 | "idiom" : "ipad", 55 | "size" : "76x76", 56 | "scale" : "1x" 57 | }, 58 | { 59 | "idiom" : "ipad", 60 | "size" : "76x76", 61 | "scale" : "2x" 62 | } 63 | ], 64 | "info" : { 65 | "version" : 1, 66 | "author" : "xcode" 67 | } 68 | } -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionViewUITests/CustomerCollectionViewUITests.m: -------------------------------------------------------------------------------- 1 | // 2 | // CustomerCollectionViewUITests.m 3 | // CustomerCollectionViewUITests 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface CustomerCollectionViewUITests : XCTestCase 12 | 13 | @end 14 | 15 | @implementation CustomerCollectionViewUITests 16 | 17 | - (void)setUp { 18 | [super setUp]; 19 | 20 | // Put setup code here. This method is called before the invocation of each test method in the class. 21 | 22 | // In UI tests it is usually best to stop immediately when a failure occurs. 23 | self.continueAfterFailure = NO; 24 | // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method. 25 | [[[XCUIApplication alloc] init] launch]; 26 | 27 | // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this. 28 | } 29 | 30 | - (void)tearDown { 31 | // Put teardown code here. This method is called after the invocation of each test method in the class. 32 | [super tearDown]; 33 | } 34 | 35 | - (void)testExample { 36 | // Use recording to get started writing UI tests. 37 | // Use XCTAssert and related functions to verify your tests produce the correct results. 38 | } 39 | 40 | @end 41 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Xcode 2 | # 3 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 4 | 5 | ## Build generated 6 | build/ 7 | DerivedData/ 8 | 9 | ## Various settings 10 | *.pbxuser 11 | !default.pbxuser 12 | *.mode1v3 13 | !default.mode1v3 14 | *.mode2v3 15 | !default.mode2v3 16 | *.perspectivev3 17 | !default.perspectivev3 18 | xcuserdata/ 19 | 20 | ## Other 21 | *.moved-aside 22 | *.xccheckout 23 | *.xcscmblueprint 24 | 25 | ## Obj-C/Swift specific 26 | *.hmap 27 | *.ipa 28 | *.dSYM.zip 29 | *.dSYM 30 | 31 | # CocoaPods 32 | # 33 | # We recommend against adding the Pods directory to your .gitignore. However 34 | # you should judge for yourself, the pros and cons are mentioned at: 35 | # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control 36 | # 37 | # Pods/ 38 | 39 | # Carthage 40 | # 41 | # Add this line if you want to avoid checking in source code from Carthage dependencies. 42 | # Carthage/Checkouts 43 | 44 | Carthage/Build 45 | 46 | # fastlane 47 | # 48 | # It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the 49 | # screenshots whenever they are needed. 50 | # For more information about the recommended setup visit: 51 | # https://docs.fastlane.tools/best-practices/source-control/#source-control 52 | 53 | fastlane/report.xml 54 | fastlane/Preview.html 55 | fastlane/screenshots 56 | fastlane/test_output 57 | 58 | # Code Injection 59 | # 60 | # After new code Injection tools there's a generated folder /iOSInjectionProject 61 | # https://github.com/johnno1962/injectionforxcode 62 | 63 | iOSInjectionProject/ 64 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | LSRequiresIPhoneOS 22 | 23 | UILaunchStoryboardName 24 | LaunchScreen 25 | UIMainStoryboardFile 26 | Main 27 | UIRequiredDeviceCapabilities 28 | 29 | armv7 30 | 31 | UISupportedInterfaceOrientations 32 | 33 | UIInterfaceOrientationPortrait 34 | UIInterfaceOrientationLandscapeLeft 35 | UIInterfaceOrientationLandscapeRight 36 | 37 | UISupportedInterfaceOrientations~ipad 38 | 39 | UIInterfaceOrientationPortrait 40 | UIInterfaceOrientationPortraitUpsideDown 41 | UIInterfaceOrientationLandscapeLeft 42 | UIInterfaceOrientationLandscapeRight 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/WHCWaterFlowLayout/WHCWaterfallFlowLayout.h: -------------------------------------------------------------------------------- 1 | // 2 | // WHCWaterfallFlowLayout.h 3 | // CustomCollection 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import 10 | UIKIT_EXTERN NSString *const UICollectionElementKindSectionHeader; 11 | UIKIT_EXTERN NSString *const UICollectionElementKindSectionFooter; 12 | 13 | @class WHCWaterfallFlowLayout; 14 | @protocol WHCWaterfallFlowLayoutDelegate 15 | @required 16 | /* 17 | item heigh 设置第一个cell 的宽高 18 | */ 19 | - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout heightForWidth:(CGFloat)width atIndexPath:(NSIndexPath*)indexPath; 20 | 21 | @optional 22 | /* 23 | 设置collection 的头视图的size 24 | */ 25 | - (CGSize)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section; 26 | /* 27 | section footer 设置collection footer 视图的size 28 | */ 29 | - (CGSize)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section; 30 | @end 31 | 32 | @interface WHCWaterfallFlowLayout : UICollectionViewLayout 33 | 34 | @property(nonatomic, assign)UIEdgeInsets sectionInset; //cell 间距 35 | @property(nonatomic, assign)CGFloat lineSpacing; //line space 36 | @property(nonatomic, assign)CGFloat itemSpacing; //item space 37 | @property(nonatomic, assign)CGFloat colCount; //设置colleciton 的列数 38 | @property(nonatomic, weak)id delegate; 39 | 40 | @end 41 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/AppDelegate.m: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.m 3 | // CustomerCollectionView 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import "AppDelegate.h" 10 | 11 | @interface AppDelegate () 12 | 13 | @end 14 | 15 | @implementation AppDelegate 16 | 17 | 18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 19 | // Override point for customization after application launch. 20 | return YES; 21 | } 22 | 23 | 24 | - (void)applicationWillResignActive:(UIApplication *)application { 25 | // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 26 | // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 27 | } 28 | 29 | 30 | - (void)applicationDidEnterBackground:(UIApplication *)application { 31 | // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 32 | // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 33 | } 34 | 35 | 36 | - (void)applicationWillEnterForeground:(UIApplication *)application { 37 | // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 38 | } 39 | 40 | 41 | - (void)applicationDidBecomeActive:(UIApplication *)application { 42 | // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 43 | } 44 | 45 | 46 | - (void)applicationWillTerminate:(UIApplication *)application { 47 | // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 48 | } 49 | 50 | 51 | @end 52 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/ViewController.m: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.m 3 | // CustomCollection 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import "ViewController.h" 10 | #import "WHCWaterfallFlowLayout.h" 11 | #define HOME_SCREEN_SIZE [UIScreen mainScreen].bounds.size 12 | #define HOME_SCREEN_WIDTH HOME_SCREEN_SIZE.width 13 | #define HOME_SCREEN_HEIGHT HOME_SCREEN_SIZE.height 14 | 15 | @interface ViewController () 16 | @property (nonatomic , strong)UICollectionView *collectionView; 17 | @end 18 | 19 | @implementation ViewController 20 | 21 | - (void)viewDidLoad { 22 | [super viewDidLoad]; 23 | 24 | WHCWaterfallFlowLayout *whcLayout = [[WHCWaterfallFlowLayout alloc] init]; 25 | whcLayout.itemSpacing = 10; 26 | whcLayout.lineSpacing = 10; 27 | whcLayout.sectionInset = UIEdgeInsetsMake(10, 10, 10, 10); 28 | whcLayout.colCount = 2; 29 | whcLayout.delegate = self; 30 | 31 | _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, HOME_SCREEN_WIDTH, HOME_SCREEN_HEIGHT) collectionViewLayout:whcLayout]; 32 | _collectionView.delegate = self; 33 | _collectionView.dataSource = self; 34 | _collectionView.showsVerticalScrollIndicator = NO; 35 | _collectionView.showsHorizontalScrollIndicator = NO; 36 | [_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"UICollectionViewCell"]; 37 | 38 | // [_collectionView addSubview: self.tipLabel]; 39 | [self.view addSubview:_collectionView]; 40 | self.collectionView.alwaysBounceVertical = YES; 41 | } 42 | #pragma mark collectionViewDatasouce 43 | - (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{ 44 | // return self.viewModel.dataArray.count; 45 | return 1; 46 | } 47 | - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section 48 | { 49 | return 20; 50 | } 51 | - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath 52 | { 53 | NSLog(@"当前点击的是第%ld个cell",(long)indexPath.item); 54 | } 55 | 56 | - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 57 | { 58 | 59 | UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"UICollectionViewCell" forIndexPath:indexPath]; 60 | for (id imageView in cell.subviews) { 61 | [imageView removeFromSuperview]; 62 | } 63 | //随机颜色 64 | cell.backgroundColor = [UIColor colorWithRed:arc4random_uniform(255) / 255.0 green:arc4random_uniform(255)/255.0 blue:arc4random_uniform(255)/255.0 alpha:1]; 65 | UILabel *lable = [[UILabel alloc]initWithFrame:cell.bounds]; 66 | lable.textAlignment = NSTextAlignmentCenter; 67 | lable.text = [NSString stringWithFormat:@"%ld",indexPath.item]; 68 | [cell addSubview:lable]; 69 | return cell; 70 | } 71 | 72 | - (void)didReceiveMemoryWarning { 73 | [super didReceiveMemoryWarning]; 74 | // Dispose of any resources that can be recreated. 75 | } 76 | 77 | #pragma mark WHCWaterfallFlowLayout 78 | - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(WHCWaterfallFlowLayout*)collectionViewLayout heightForWidth:(CGFloat)width atIndexPath:(NSIndexPath*)indexPath 79 | { 80 | //这个位置可以设置cell 的宽高例：设置第一个cell的宽高 81 | CGFloat W = (HOME_SCREEN_WIDTH - 10) / 2; 82 | if (indexPath.section == 0) { 83 | if (indexPath.row == 0) { 84 | return 100/W*width; 85 | }else 86 | { 87 | return (W + 50)/W*width; 88 | } 89 | } 90 | else 91 | { 92 | return 0; 93 | } 94 | } 95 | 96 | @end 97 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView/WHCWaterFlowLayout/WHCWaterfallFlowLayout.m: -------------------------------------------------------------------------------- 1 | // 2 | // WHCWaterfallFlowLayout.m 3 | // CustomCollection 4 | // 5 | // Created by WHC on 2017/7/31. 6 | // Copyright © 2017年 Wang. All rights reserved. 7 | // 8 | 9 | #import "WHCWaterfallFlowLayout.h" 10 | 11 | /* 默认值 */ 12 | static const CGFloat inset = 10; 13 | static const CGFloat colCount = 3; 14 | 15 | @interface WHCWaterfallFlowLayout () 16 | @property (nonatomic, strong) NSMutableDictionary *colunMaxYDic; 17 | @end 18 | @implementation WHCWaterfallFlowLayout 19 | - (instancetype)init 20 | { 21 | if (self=[super init]) { 22 | self.itemSpacing = inset; 23 | self.lineSpacing = inset; 24 | self.sectionInset = UIEdgeInsetsMake(inset, inset, inset, inset); 25 | self.colCount = colCount; 26 | self.colunMaxYDic = [[NSMutableDictionary alloc] init]; 27 | } 28 | return self; 29 | } 30 | 31 | - (void)prepareLayout 32 | { 33 | [super prepareLayout]; 34 | } 35 | 36 | - (BOOL)shouldInvalidateLayoutForBoundsChange:(CGRect)newBounds 37 | { 38 | return YES; 39 | } 40 | 41 | - (CGSize)collectionViewContentSize 42 | { 43 | __block NSString * maxCol = @"0"; 44 | //遍历找出最高的列 45 | [self.colunMaxYDic enumerateKeysAndObjectsUsingBlock:^(NSString * column, NSNumber *maxY, BOOL *stop) { 46 | if ([maxY floatValue] > [self.colunMaxYDic[maxCol] floatValue]) { 47 | maxCol = column; 48 | } 49 | }]; 50 | 51 | return CGSizeMake(0, [self.colunMaxYDic[maxCol] floatValue]); 52 | } 53 | 54 | - (nullable UICollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSIndexPath *)indexPath; 55 | { 56 | __block NSString * minCol = @"0"; 57 | //遍历找出最短的列 58 | [self.colunMaxYDic enumerateKeysAndObjectsUsingBlock:^(NSString * column, NSNumber *maxY, BOOL *stop) { 59 | if ([maxY floatValue] < [self.colunMaxYDic[minCol] floatValue]) { 60 | minCol = column; 61 | } 62 | }]; 63 | 64 | // 宽度 65 | CGFloat width = (self.collectionView.frame.size.width - self.sectionInset.left - self.sectionInset.right- (self.colCount-1) * self.itemSpacing)/self.colCount; 66 | // 高度 67 | CGFloat height = 0; 68 | if ([self.delegate respondsToSelector:@selector(collectionView:layout:heightForWidth:atIndexPath:)]) { 69 | height = [self.delegate collectionView:self.collectionView layout:self heightForWidth:width atIndexPath:indexPath]; 70 | } 71 | 72 | CGFloat x = self.sectionInset.left + (width + self.itemSpacing) * [minCol intValue]; 73 | 74 | CGFloat space = 0.0; 75 | if (indexPath.item < self.colCount) { 76 | space = 0.0; 77 | }else{ 78 | space = self.lineSpacing; 79 | } 80 | CGFloat y =[self.colunMaxYDic[minCol] floatValue] + space; 81 | 82 | // 跟新对应列的高度 83 | self.colunMaxYDic[minCol] = @(y + height); 84 | 85 | // 计算位置 86 | UICollectionViewLayoutAttributes * attri = [UICollectionViewLayoutAttributes layoutAttributesForCellWithIndexPath:indexPath]; 87 | attri.frame = CGRectMake(x, y, width, height); 88 | 89 | return attri; 90 | } 91 | 92 | - (nullable UICollectionViewLayoutAttributes *)layoutAttributesForSupplementaryViewOfKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath{ 93 | 94 | __block NSString * maxCol = @"0"; 95 | //遍历找出最高的列 96 | [self.colunMaxYDic enumerateKeysAndObjectsUsingBlock:^(NSString * column, NSNumber *maxY, BOOL *stop) { 97 | if ([maxY floatValue] > [self.colunMaxYDic[maxCol] floatValue]) { 98 | maxCol = column; 99 | } 100 | }]; 101 | 102 | //header 103 | if ([UICollectionElementKindSectionHeader isEqualToString:elementKind]) { 104 | UICollectionViewLayoutAttributes *attri = [UICollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionHeader withIndexPath:indexPath]; 105 | //size 106 | CGSize size = CGSizeZero; 107 | if ([self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForHeaderInSection:)]) { 108 | size = [self.delegate collectionView:self.collectionView layout:self referenceSizeForHeaderInSection:indexPath.section]; 109 | } 110 | CGFloat x = self.sectionInset.left; 111 | CGFloat y = [[self.colunMaxYDic objectForKey:maxCol] floatValue] + self.sectionInset.top; 112 | 113 | // 跟新所有对应列的高度 114 | for(NSString *key in self.colunMaxYDic.allKeys) 115 | { 116 | self.colunMaxYDic[key] = @(y + size.height); 117 | } 118 | 119 | attri.frame = CGRectMake(x , y, size.width, size.height); 120 | return attri; 121 | } 122 | 123 | //footer 124 | else{ 125 | UICollectionViewLayoutAttributes *attri = [UICollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter withIndexPath:indexPath]; 126 | //size 127 | CGSize size = CGSizeZero; 128 | if ([self.delegate respondsToSelector:@selector(collectionView:layout:referenceSizeForFooterInSection:)]) { 129 | size = [self.delegate collectionView:self.collectionView layout:self referenceSizeForFooterInSection:indexPath.section]; 130 | } 131 | CGFloat x = self.sectionInset.left; 132 | CGFloat y = [[self.colunMaxYDic objectForKey:maxCol] floatValue]; 133 | 134 | // 跟新所有对应列的高度 135 | for(NSString *key in self.colunMaxYDic.allKeys) 136 | { 137 | self.colunMaxYDic[key] = @(y + size.height + self.sectionInset.bottom); 138 | } 139 | 140 | attri.frame = CGRectMake(x , y, size.width, size.height); 141 | return attri; 142 | } 143 | } 144 | 145 | - (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect 146 | { 147 | for(NSInteger i = 0;i < self.colCount; i++) 148 | { 149 | NSString * col = [NSString stringWithFormat:@"%ld",(long)i]; 150 | self.colunMaxYDic[col] = @0; 151 | } 152 | 153 | NSMutableArray * attrsArray = [NSMutableArray array]; 154 | 155 | NSInteger section = [self.collectionView numberOfSections]; 156 | for (NSInteger i = 0 ; i < section; i++) { 157 | 158 | //获取header的UICollectionViewLayoutAttributes 159 | UICollectionViewLayoutAttributes *headerAttrs = [self layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionHeader atIndexPath:[NSIndexPath indexPathForItem:0 inSection:i]]; 160 | [attrsArray addObject:headerAttrs]; 161 | 162 | //获取item的UICollectionViewLayoutAttributes 163 | NSInteger count = [self.collectionView numberOfItemsInSection:i]; 164 | for (NSInteger j = 0; j < count; j++) { 165 | UICollectionViewLayoutAttributes * attrs = [self layoutAttributesForItemAtIndexPath:[NSIndexPath indexPathForItem:j inSection:i]]; 166 | [attrsArray addObject:attrs]; 167 | } 168 | 169 | //获取footer的UICollectionViewLayoutAttributes 170 | UICollectionViewLayoutAttributes *footerAttrs = [self layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter atIndexPath:[NSIndexPath indexPathForItem:0 inSection:i]]; 171 | [attrsArray addObject:footerAttrs]; 172 | } 173 | 174 | return attrsArray; 175 | } 176 | 177 | @end 178 | -------------------------------------------------------------------------------- /CustomerCollectionView/CustomerCollectionView.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 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