Elastic pull to refresh compontent developed in Swift

Inspired by this Dribbble post: Pull Down to Refresh by Hoang Nguyen

Tutorial on how this bounce effect was achieved can be found here.

• Xcode 7 or higher
• iOS 8.0 or higher (may work on previous versions, just did not test it)
• ARC
• Swift 2.0

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

pod "DGElasticPullToRefresh"

Add DGElasticPullToRefresh folder into your project.

// 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.

deinit() {
    tableView.dg_removePullToRefresh()
}

Add pull to refresh without loading view:

func dg_addPullToRefreshWithActionHandler(actionHandler: () -> Void)

Add pull to refresh with loading view:

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

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

func setPullProgress(progress: CGFloat) { }
func startAnimating() { }
func stopLoading() { }

Remove pull to refresh:

func dg_removePullToRefresh()

Change pull to refresh background color:

func dg_setPullToRefreshBackgroundColor(color: UIColor)

Change pull to refresh fill color:

func dg_setPullToRefreshFillColor(color: UIColor)

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

Danil Gontovnik

• https://github.com/gontovnik
• https://twitter.com/gontovnik
• http://gontovnik.com/
• [email protected]
• http://iostuts.io/author/danil-gontovnik/

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.