NEW: Master Swift design patterns with my latest book! >>

How to detect edge swipes

Written by Paul Hudson    @twostraws

Detecting pan gestures is easy enough with a regular UIPanGestureRecognizer, but there's a special gesture recognizer to use if you want to detect the user swiping from the edge of their screen. The example below demonstrates detecting the user swiping from the left edge of the screen:

override func viewDidLoad() {
    super.viewDidLoad()

    let edgePan = UIScreenEdgePanGestureRecognizer(target: self, action: #selector(screenEdgeSwiped))
    edgePan.edges = .left

    view.addGestureRecognizer(edgePan)
}

@objc func screenEdgeSwiped(_ recognizer: UIScreenEdgePanGestureRecognizer) {
    if recognizer.state == .recognized {
        print("Screen edge swiped!")
    }
}

Available from iOS 7.0

Did this solution work for you? Please pass it on!

Other people are reading…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

Love Hacking with Swift?

Get all 40 projects in PDF and HTML: buy the Hacking with Swift book! It contains over 1300 pages of hands-on Swift coding, and will really help boost your iOS career

Click here to visit the Hacking with Swift store >>