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https://github.com/gontovnik/DGElasticPullToRefresh

Elastic pull to refresh for iOS developed in Swift
https://github.com/gontovnik/DGElasticPullToRefresh

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Elastic pull to refresh for iOS developed in Swift

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# DGElasticPullToRefresh

Elastic pull to refresh compontent developed in Swift



Inspired by this Dribbble post: [Pull Down to Refresh](https://dribbble.com/shots/2232385-Pull-Down-to-Refresh) by [Hoang Nguyen](https://dribbble.com/Hoanguyen)



Tutorial on how this bounce effect was achieved can be found [here](https://medium.com/@gontovnik/elastic-view-animation-or-how-i-built-dgelasticpulltorefresh-269a3ba8636e#.9dioekqv6).



![](https://raw.githubusercontent.com/gontovnik/DGElasticPullToRefresh/master/DGElasticPullToRefreshPreview1.gif)

![](https://raw.githubusercontent.com/gontovnik/DGElasticPullToRefresh/master/DGElasticPullToRefreshPreview2.gif)



## Requirements

* Xcode 7 or higher

* iOS 8.0 or higher (may work on previous versions, just did not test it)

* ARC

* Swift 3.0



## Demo



Open and run the DGElasticPullToRefreshExample project in Xcode to see DGElasticPullToRefresh in action.



## Installation



### CocoaPods



``` ruby

pod 'DGElasticPullToRefresh'

```



### Manual



Add DGElasticPullToRefresh folder into your project.



## Example usage



``` swift

// Initialize tableView

let loadingView = DGElasticPullToRefreshLoadingViewCircle()

loadingView.tintColor = UIColor(red: 78/255.0, green: 221/255.0, blue: 200/255.0, alpha: 1.0)

tableView.dg_addPullToRefreshWithActionHandler({ [weak self] () -> Void in

    // Add your logic here

    // Do not forget to call dg_stopLoading() at the end

    self?.tableView.dg_stopLoading()

}, loadingView: loadingView)

tableView.dg_setPullToRefreshFillColor(UIColor(red: 57/255.0, green: 67/255.0, blue: 89/255.0, alpha: 1.0))

tableView.dg_setPullToRefreshBackgroundColor(tableView.backgroundColor!)

```



Do not forget to remove pull to refresh on view controller deinit. It is a temporary solution.



``` swift

deinit {

    tableView.dg_removePullToRefresh()

}

```



### Description



Add pull to refresh without loading view:



``` swift

func dg_addPullToRefreshWithActionHandler(_ actionHandler: @escaping () -> Void)

```



Add pull to refresh with loading view:



``` swift

func dg_addPullToRefreshWithActionHandler(_ actionHandler: @escaping () -> Void, loadingView: DGElasticPullToRefreshLoadingView?)

```



You can use built-in *DGElasticPullToRefreshLoadingViewCircle* or create your own by subclassing **DGElasticPullToRefreshLoadingView** and implementing these methods:



``` swift

func setPullProgress(_ progress: CGFloat)

func startAnimating()

func stopLoading()

```



Remove pull to refresh:



``` swift

func dg_removePullToRefresh()

```



Set auto start loading:



``` swift

func dg_startLoading()

```



Change pull to refresh background color:



``` swift

func dg_setPullToRefreshBackgroundColor(_ color: UIColor)

```



Change pull to refresh fill color:



``` swift

func dg_setPullToRefreshFillColor(_ color: UIColor)

```



## Contribution



Please feel free to submit pull requests. Cannot wait to see your custom loading views for this pull to refresh.



## Contact



Danil Gontovnik



- https://github.com/gontovnik

- https://twitter.com/gontovnik

- http://gontovnik.com/

- [email protected]



## License



The MIT License (MIT)



Copyright (c) 2015 Danil Gontovnik



Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:



The above copyright notice and this permission notice shall be included in all

copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

SOFTWARE.