https://github.com/ltebean/LTInfiniteScrollView-Swift

Paged scrollview allowing easily applying animation(Swift 3)
https://github.com/ltebean/LTInfiniteScrollView-Swift

Last synced: about 1 month ago
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Paged scrollview allowing easily applying animation(Swift 3)

• Host: GitHub
• URL: https://github.com/ltebean/LTInfiniteScrollView-Swift
• Owner: ltebean
• License: mit
• Created: 2016-01-21T08:48:50.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2017-07-25T03:44:51.000Z (over 7 years ago)
• Last Synced: 2024-10-08T07:02:15.722Z (2 months ago)
• Language: Swift
• Homepage:
• Size: 22.5 KB
• Stars: 202
• Watchers: 10
• Forks: 32
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome - LTInfiniteScrollView-Swift - Paged scrollview allowing easily applying animation(Swift 3) (etc)
• awesome - LTInfiniteScrollView-Swift - Paged scrollview allowing easily applying animation(Swift 3) (etc)

README

        
![LTInfiniteScrollViewSwift](https://cocoapod-badges.herokuapp.com/v/LTInfiniteScrollViewSwift/badge.png)

## Demo

##### 1. You can apply animation to each view during the scroll:

![LTInfiniteScrollView](https://raw.githubusercontent.com/ltebean/LTInfiniteScrollView/master/demo/demo.gif)

##### 2. The iOS 9 task switcher animation can be implemented in ten minutes with the support of this lib:

![LTInfiniteScrollView](https://raw.githubusercontent.com/ltebean/LTInfiniteScrollView/master/demo/task-switcher-demo.gif)

##### 3. The fancy menu can also be implemented easily:

![LTInfiniteScrollView](https://raw.githubusercontent.com/ltebean/LTInfiniteScrollView/master/demo/menu-demo.gif)

You can find the full demo in the Objective-C version: https://github.com/ltebean/LTInfiniteScrollView.

## Installation

```

pod 'LTInfiniteScrollViewSwift'

```

Or just copy `LTInfiniteScrollView.swift` into your project.

## Usage

You can create the scroll view by:

```swift

scrollView = LTInfiniteScrollView(frame: CGRect(x: 0, y: 200, width: screenWidth, height: 300))

scrollView.dataSource = self

scrollView.delegate = self

scrollView.maxScrollDistance = 5

scrollView.reloadData(initialIndex: 0)

```

Then implement `LTInfiniteScrollViewDataSource` protocol:

```swift

public protocol LTInfiniteScrollViewDataSource: class {

    func viewAtIndex(index: Int, reusingView view: UIView?) -> UIView

    func numberOfViews() -> Int

    func numberOfVisibleViews() -> Int

}

```

Sample code:

```swift

func numberOfViews() -> Int {

    return 100

}

    

func numberOfVisibleViews() -> Int {

    return 5

}

func viewAtIndex(index: Int, reusingView view: UIView?) -> UIView {

    if let label = view as? UILabel {

        label.text = "\(index)"

        return label

    }

    else {

        let size = screenWidth / CGFloat(numberOfVisibleViews())

        let label = UILabel(frame: CGRect(x: 0, y: 0, width: size, height: size))

        label.textAlignment = .Center

        label.backgroundColor = UIColor.darkGrayColor()

        label.textColor = UIColor.whiteColor()

        label.layer.cornerRadius = size / 2

        label.layer.masksToBounds = true

        label.text = "\(index)"

        return label

    }

}

```

If you want to apply any animation during scrolling, implement `LTInfiniteScrollViewDelegate` protocol: 

```swift

public protocol LTInfiniteScrollViewDelegate: class {

    func updateView(view: UIView, withProgress progress: CGFloat, scrollDirection direction: ScrollDirection)

}

```

The value of progress dependends on the position of that view, if there are 5 visible views, the value will be ranged from -2 to 2:

```

|                  |

|-2  -1   0   1   2|

|                  |

```

You can clone the project and investigate the example for details.