├── .gitignore
├── AwsomeLayout.xcodeproj
    ├── project.pbxproj
    └── project.xcworkspace
    │   └── contents.xcworkspacedata
├── AwsomeLayout
    ├── AppDelegate.swift
    ├── Assets.xcassets
    │   └── AppIcon.appiconset
    │   │   └── Contents.json
    ├── Base.lproj
    │   ├── LaunchScreen.storyboard
    │   └── Main.storyboard
    ├── Controller
    │   └── ViewController.swift
    ├── Info.plist
    └── Layouts
    │   └── CardLayout.swift
└── README.md


/.gitignore:
--------------------------------------------------------------------------------
 1 | # Xcode
 2 | #
 3 | build/
 4 | *.pbxuser
 5 | !default.pbxuser
 6 | *.mode1v3
 7 | !default.mode1v3
 8 | *.mode2v3
 9 | !default.mode2v3
10 | *.perspectivev3
11 | !default.perspectivev3
12 | xcuserdata
13 | *.xccheckout
14 | *.moved-aside
15 | DerivedData
16 | *.hmap
17 | *.ipa
18 | *.xcuserstate
19 | 
20 | # CocoaPods
21 | #
22 | # We recommend against adding the Pods directory to your .gitignore. However
23 | # you should judge for yourself, the pros and cons are mentioned at:
24 | # http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
25 | #
26 | #Pods/
27 | 


--------------------------------------------------------------------------------
/AwsomeLayout.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
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 77 | 			);
 78 | 			name = Support;
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128 | 			);
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364 | }
365 | 


--------------------------------------------------------------------------------
/AwsomeLayout.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:/Users/chen/Desktop/Project/iOS/AwsomeLayout-Swift/AwsomeLayout.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/AwsomeLayout/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  AwsomeLayout
 4 | //
 5 | //  Created by 陈凯 on 2017/3/2.
 6 | //  Copyright © 2017年 陈凯. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 | 
14 |     var window: UIWindow?
15 | 
16 | 
17 |     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
18 |         // Override point for customization after application launch.
19 |         return true
20 |     }
21 | 
22 |     func applicationWillResignActive(_ application: UIApplication) {
23 |         // 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.
24 |         // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
25 |     }
26 | 
27 |     func applicationDidEnterBackground(_ application: UIApplication) {
28 |         // 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.
29 |         // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
30 |     }
31 | 
32 |     func applicationWillEnterForeground(_ application: UIApplication) {
33 |         // 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.
34 |     }
35 | 
36 |     func applicationDidBecomeActive(_ application: UIApplication) {
37 |         // 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.
38 |     }
39 | 
40 |     func applicationWillTerminate(_ application: UIApplication) {
41 |         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
42 |     }
43 | 
44 | 
45 | }
46 | 
47 | 


--------------------------------------------------------------------------------
/AwsomeLayout/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 | }


--------------------------------------------------------------------------------
/AwsomeLayout/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
 5 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--View Controller-->
 9 |         <scene sceneID="EHf-IW-A2E">
10 |             <objects>
11 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
12 |                     <layoutGuides>
13 |                         <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
14 |                         <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
15 |                     </layoutGuides>
16 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
17 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
18 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
19 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
20 |                     </view>
21 |                 </viewController>
22 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
23 |             </objects>
24 |             <point key="canvasLocation" x="53" y="375"/>
25 |         </scene>
26 |     </scenes>
27 | </document>
28 | 


--------------------------------------------------------------------------------
/AwsomeLayout/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
 5 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--View Controller-->
 9 |         <scene sceneID="tne-QT-ifu">
10 |             <objects>
11 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" customModuleProvider="target" sceneMemberID="viewController">
12 |                     <layoutGuides>
13 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
14 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
15 |                     </layoutGuides>
16 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
17 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
18 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
19 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
20 |                     </view>
21 |                 </viewController>
22 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
23 |             </objects>
24 |         </scene>
25 |     </scenes>
26 | </document>
27 | 


--------------------------------------------------------------------------------
/AwsomeLayout/Controller/ViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.swift
 3 | //  AwsomeLayout
 4 | //
 5 | //  Created by 陈凯 on 2017/3/2.
 6 | //  Copyright © 2017年 陈凯. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class ViewController: UIViewController {
12 | 
13 |     var collectionView: UICollectionView!
14 |     
15 |     override func viewDidLoad() {
16 |         super.viewDidLoad()
17 |         
18 |         let layout = CardLayout()
19 |         layout.scale = 1.1
20 |         layout.itemSize = CGSize(width: 200, height: 300)
21 |         
22 |         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
23 |         collectionView.backgroundColor = .white
24 |         collectionView.dataSource = self
25 |         collectionView.showsVerticalScrollIndicator = false
26 |         collectionView.showsHorizontalScrollIndicator = false
27 |         collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "CellID")
28 |         view.addSubview(collectionView)
29 |     }
30 |     
31 |     override func viewDidLayoutSubviews() {
32 |         super.viewDidLayoutSubviews()
33 |         
34 |         collectionView.frame = view.bounds
35 |     }
36 |     
37 |     override var prefersStatusBarHidden: Bool {
38 |         return true
39 |     }
40 | }
41 | 
42 | extension ViewController: UICollectionViewDataSource {
43 |     
44 |     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
45 |         return 10
46 |     }
47 |     
48 |     func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
49 |         let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CellID", for: indexPath)
50 |         cell.layer.cornerRadius = 5
51 |         cell.backgroundColor = UIColor(white: 0.8, alpha: 1)//indexPath.item%2==0 ? UIColor(white: 0.8, alpha: 1) : UIColor(white: 0.6, alpha: 1)
52 |         return cell
53 |     }
54 |     
55 | }
56 | 
57 | 


--------------------------------------------------------------------------------
/AwsomeLayout/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>LSRequiresIPhoneOS</key>
22 | 	<true/>
23 | 	<key>UILaunchStoryboardName</key>
24 | 	<string>LaunchScreen</string>
25 | 	<key>UIMainStoryboardFile</key>
26 | 	<string>Main</string>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UISupportedInterfaceOrientations</key>
32 | 	<array>
33 | 		<string>UIInterfaceOrientationPortrait</string>
34 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
35 | 		<string>UIInterfaceOrientationLandscapeRight</string>
36 | 	</array>
37 | 	<key>UISupportedInterfaceOrientations~ipad</key>
38 | 	<array>
39 | 		<string>UIInterfaceOrientationPortrait</string>
40 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
41 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
42 | 		<string>UIInterfaceOrientationLandscapeRight</string>
43 | 	</array>
44 | </dict>
45 | </plist>
46 | 


--------------------------------------------------------------------------------
/AwsomeLayout/Layouts/CardLayout.swift:
--------------------------------------------------------------------------------
  1 | //
  2 | //  CardLayout.swift
  3 | //  AwsomeLayout
  4 | //
  5 | //  Created by 陈凯 on 2017/3/2.
  6 | //  Copyright © 2017年 陈凯. All rights reserved.
  7 | //
  8 | 
  9 | import UIKit
 10 | 
 11 | class CardLayout: UICollectionViewLayout {
 12 | 
 13 |     var itemSize: CGSize = CGSize(width: 280, height: 400) {
 14 |         
 15 |         didSet {
 16 |             if itemSize != oldValue {
 17 |                 invalidateLayout()
 18 |             }
 19 |         }
 20 |     }
 21 |     
 22 |     var spacing: CGFloat = 20.0 {
 23 |         didSet {
 24 |             if spacing != oldValue {
 25 |                 invalidateLayout()
 26 |             }
 27 |         }
 28 |     }
 29 |     
 30 |     var scale: CGFloat = 1.0 {
 31 |         didSet {
 32 |             if scale != oldValue {
 33 |                 invalidateLayout()
 34 |             }
 35 |         }
 36 |     }
 37 |     
 38 |     var edgeInset: UIEdgeInsets = UIEdgeInsetsMake(20, 20, 20, 20) {
 39 |         didSet {
 40 |             if edgeInset != oldValue {
 41 |                 invalidateLayout()
 42 |             }
 43 |         }
 44 |     }
 45 |     
 46 |     var scrollDirection: UICollectionViewScrollDirection = .horizontal {
 47 |         didSet {
 48 |             if scrollDirection != oldValue {
 49 |                 invalidateLayout()
 50 |             }
 51 |         }
 52 |     }
 53 |     
 54 |     private var rectAttributes:[UICollectionViewLayoutAttributes] = [];
 55 |     
 56 |     override func shouldInvalidateLayout(forBoundsChange newBounds: CGRect) -> Bool {
 57 |         return true
 58 |     }
 59 |     
 60 |     override var collectionViewContentSize: CGSize {
 61 |         
 62 |         guard let collectionView = collectionView else {
 63 |             return .zero
 64 |         }
 65 |         let count = collectionView.numberOfItems(inSection: 0)
 66 |         
 67 |         var width, height: CGFloat
 68 |         switch scrollDirection {
 69 |         case .horizontal:
 70 |             width = CGFloat(count)*(itemSize.width+spacing)-spacing+edgeInset.left+edgeInset.right
 71 |             height = collectionView.bounds.height
 72 |             
 73 |         case .vertical:
 74 |             width = collectionView.bounds.width
 75 |             height = CGFloat(count)*(itemSize.height+spacing)-spacing+edgeInset.top+edgeInset.bottom
 76 |         }
 77 |         return CGSize(width: width, height: height)
 78 |     }
 79 |     
 80 |     override func layoutAttributesForItem(at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? {
 81 |         
 82 |         guard let collectionView = collectionView else {
 83 |             return nil
 84 |         }
 85 |         
 86 |         let attribute = UICollectionViewLayoutAttributes(forCellWith: indexPath)
 87 |         attribute.size = itemSize
 88 |         
 89 |         var x, y:CGFloat
 90 |         switch scrollDirection {
 91 |         case .horizontal:
 92 |             x = edgeInset.left + CGFloat(indexPath.item)*(itemSize.width+spacing)
 93 |             y = 0.5*(collectionView.bounds.height - itemSize.height)
 94 |             
 95 |         case .vertical:
 96 |             x = 0.5*(collectionView.bounds.width - itemSize.width)
 97 |             y = edgeInset.top + CGFloat(indexPath.item)*(itemSize.height+spacing)
 98 |         }
 99 |         attribute.frame = CGRect(origin: CGPoint(x:x, y:y), size: itemSize)
100 |         return attribute
101 |     }
102 |     
103 |     override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
104 |         
105 |         guard let collectionView = collectionView else {
106 |             return nil
107 |         }
108 |         
109 |         let attributes = self.attributes(in: rect)
110 |         
111 |         var scale, offset, deno: CGFloat
112 |         switch scrollDirection {
113 |         case .horizontal:
114 |             let centerX = collectionView.contentOffset.x+0.5*collectionView.bounds.width
115 |             for attribute in attributes {
116 |                 offset = abs(attribute.center.x - centerX)
117 |                 deno = itemSize.width+spacing
118 |                 if offset<deno {
119 |                     scale = 1+(1-offset/deno)*(self.scale-1)
120 |                     attribute.transform = CGAffineTransform(scaleX: scale, y: scale)
121 |                     attribute.zIndex = 1
122 |                 }
123 |             }
124 |             
125 |         case .vertical:
126 |             let centerY = collectionView.contentOffset.y+0.5*collectionView.bounds.height
127 |             for attribute in attributes {
128 |                 offset = abs(attribute.center.y - centerY)
129 |                 deno = itemSize.height+spacing
130 |                 if offset<deno {
131 |                     scale = 1+(1-offset/deno)*(self.scale-1)
132 |                     attribute.transform = CGAffineTransform(scaleX: scale, y: scale)
133 |                     attribute.zIndex = 1
134 |                 }
135 |             }
136 |         }
137 |         return attributes
138 |     }
139 |     
140 |     override func targetContentOffset(forProposedContentOffset proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {
141 |         
142 |         guard let collectionView = collectionView else {
143 |             return proposedContentOffset
144 |         }
145 |         
146 |         let rect = CGRect(x: proposedContentOffset.x, y: proposedContentOffset.y, width: collectionView.bounds.width, height: collectionView.bounds.height)
147 |         guard let attributes = layoutAttributesForElements(in: rect) else {
148 |             return proposedContentOffset
149 |         }
150 |         
151 |         switch scrollDirection {
152 |         case .horizontal:
153 |             let centerX = proposedContentOffset.x+0.5*collectionView.bounds.width
154 |             var minOffsetX = CGFloat(Int.max)
155 |             for attribute in attributes {
156 |                 let offsetX = attribute.center.x-centerX
157 |                 if abs(offsetX)<abs(minOffsetX) {
158 |                     minOffsetX = offsetX
159 |                 }
160 |             }
161 |             return CGPoint(x:proposedContentOffset.x+minOffsetX, y:proposedContentOffset.y)
162 |             
163 |         case .vertical:
164 |             let centerY = proposedContentOffset.y+0.5*collectionView.bounds.height
165 |             var minOffsetY = CGFloat(Int.max)
166 |             for attribute in attributes {
167 |                 let offsetY = attribute.center.y-centerY
168 |                 if abs(offsetY)<abs(minOffsetY) {
169 |                     minOffsetY = offsetY
170 |                 }
171 |             }
172 |             return CGPoint(x:proposedContentOffset.x, y:proposedContentOffset.y+minOffsetY)
173 |         }
174 |     }
175 |     
176 |     private func attributes(in rect: CGRect) -> [UICollectionViewLayoutAttributes] {
177 |         
178 |         guard let collectionView = collectionView else {
179 |             return []
180 |         }
181 |         
182 |         let itemCount = collectionView.numberOfItems(inSection: 0)
183 |         var preIndex, latIndex: Int;
184 |         switch scrollDirection {
185 |         case .horizontal:
186 |             preIndex = Int((rect.origin.x-edgeInset.left)/(itemSize.width+spacing))
187 |             latIndex = Int((rect.maxX-edgeInset.left)/(itemSize.width+spacing))
188 |             
189 |         case .vertical:
190 |             preIndex = Int((rect.origin.y-edgeInset.top)/(itemSize.height+spacing))
191 |             latIndex = Int((rect.maxY-edgeInset.top)/(itemSize.height+spacing))
192 |         }
193 |         preIndex = preIndex<0 ? 0 : preIndex
194 |         preIndex = preIndex>=itemCount ? itemCount-1 : preIndex
195 |         latIndex = latIndex>=itemCount ? itemCount-1 : latIndex
196 |         
197 |         rectAttributes.removeAll()
198 |         for i in preIndex...latIndex {
199 |             let indexPath = IndexPath(item: i, section: 0)
200 |             let attribute = layoutAttributesForItem(at: indexPath)
201 |             if rect.intersects(attribute!.frame) {
202 |                 rectAttributes.append(attribute!)
203 |             }
204 |         }
205 |         
206 |         return rectAttributes;
207 |     }
208 |     
209 | }
210 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | ## 卡片布局，支持水平、垂直滚动。OC版本请[点击这里](https://github.com/Pr-Chen/CardLayout-OC)
 2 | ![](https://ww3.sinaimg.cn/large/006tNbRwly1fd8xu377fng305k09vdo5.gif)
 3 | ![](https://ww2.sinaimg.cn/large/006tNbRwly1fd8xu51jf4g305k09vq9x.gif)
 4 | ![](https://ww4.sinaimg.cn/large/006tNbRwly1fd8xug0iejg305k09vdu7.gif)
 5 | ![](https://ww4.sinaimg.cn/large/006tNbRwly1fd8xuimwh4g305k09vn64.gif)
 6 | 
 7 | ## 用法简单
 8 | ```swift
 9 | let layout = CardLayout()
10 | let collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
11 | ```
12 | 
13 | ## 可以设置的属性
14 | ```swift
15 | //cell的尺寸
16 | var itemSize: CGSize
17 | 
18 | //cell间距
19 | var spacing: CGFloat
20 | 
21 | //缩放率
22 | var scale: CGFloat
23 | 
24 | //边距
25 | var edgeInset: UIEdgeInsets
26 | 
27 | //滚动方向
28 | var scrollDirection: UICollectionViewScrollDirection
29 | 
30 | ```
31 | 


--------------------------------------------------------------------------------