How to recognize swipe in all 4 directions

Question

I need to use swipe to recognize swipe gesture down and then right  But on swift UISwipeGestureRecognizer has predeterminate Right direction   And I don t know how make this for use other directions

User · Answer

I just felt like contributing this  looks more elegant in the end   func addSwipe         let directions   UISwipeGestureRecognizerDirection      Right   Left   Up   Down      for direction in directions           let gesture   UISwipeGestureRecognizer target  self  action  Selector  handleSwipe             gesture direction   direction         self addGestureRecognizer gesture           func handleSwipe sender  UISwipeGestureRecognizer        print sender direction

User · Answer

Easy  Just follow the code below and enjoy     SwipeGestureMethodUsing func SwipeGestureMethodUsing            AddSwipeGesture      UISwipeGestureRecognizerDirection right       UISwipeGestureRecognizerDirection left       UISwipeGestureRecognizerDirection up       UISwipeGestureRecognizerDirection down  forEach   direction in         let swipe   UISwipeGestureRecognizer target  self  action   selector self respondToSwipeGesture           swipe direction   direction         window  addGestureRecognizer swipe               respondToSwipeGesture func respondToSwipeGesture gesture  UIGestureRecognizer         if let swipeGesture   gesture as  UISwipeGestureRecognizer               switch swipeGesture direction                   case UISwipeGestureRecognizerDirection right              print  Swiped right           case UISwipeGestureRecognizerDirection down              print  Swiped down           case UISwipeGestureRecognizerDirection left              print  Swiped left           case UISwipeGestureRecognizerDirection up              print  Swiped up           default              break

User · Answer

UISwipeGestureRecognizer has a direction property that has the following definition   var direction  UISwipeGestureRecognizerDirection      The permitted direction of the swipe for this gesture recognizer      The problem with Swift 3 0 1  and below  is that even if UISwipeGestureRecognizerDirection conforms to OptionSet  the following snippet will compile but won t produce any positive expected result      This compiles but does not work let gesture   UISwipeGestureRecognizer target  self  action   selector gestureHandler   gesture direction     right   left   up   down  self addGestureRecognizer gesture    As a workaround  you will have to create a UISwipeGestureRecognizer for each desired direction     The following Playground code shows how to implement several UISwipeGestureRecognizer for the same UIView and the same selector using Array s map method   import UIKit import PlaygroundSupport  class SwipeableView  UIView       convenience init             self init frame  CGRect x  100  y  100  width  100  height  100           backgroundColor    red           UISwipeGestureRecognizerDirection right   left   up   down  map               let gesture   UISwipeGestureRecognizer target  self  action   selector gestureHandler               gesture direction    0             self addGestureRecognizer gesture                        func gestureHandler sender  UISwipeGestureRecognizer            switch sender direction           case   left     frame origin x -  10         case   right    frame origin x    10         case   up       frame origin y -  10         case   down     frame origin y    10         default         break                    class ViewController  UIViewController       override func viewDidLoad             super viewDidLoad           view backgroundColor    white         view addSubview SwipeableView             let controller   ViewController   PlaygroundPage current liveView   controller

User · Answer

You need to have one UISwipeGestureRecognizer for each direction  It s a little weird because the UISwipeGestureRecognizer direction property is an options-style bit mask  but each recognizer can only handle one direction  You can send them all to the same handler if you want  and sort it out there  or send them to different handlers  Here s one implementation   override func viewDidLoad         super viewDidLoad        let swipeRight   UISwipeGestureRecognizer target  self  action   selector respondToSwipeGesture       swipeRight direction    right     self view addGestureRecognizer swipeRight       let swipeDown   UISwipeGestureRecognizer target  self  action   selector respondToSwipeGesture       swipeDown direction    down     self view addGestureRecognizer swipeDown      objc func respondToSwipeGesture gesture  UIGestureRecognizer         if let swipeGesture   gesture as  UISwipeGestureRecognizer            switch swipeGesture direction           case  right              print  Swiped right           case  down              print  Swiped down           case  left              print  Swiped left           case  up              print  Swiped up           default              break                     Swift 3   override func viewDidLoad         super viewDidLoad        let swipeRight   UISwipeGestureRecognizer target  self  action   selector self respondToSwipeGesture       swipeRight direction   UISwipeGestureRecognizerDirection right     self view addGestureRecognizer swipeRight       let swipeDown   UISwipeGestureRecognizer target  self  action   selector self respondToSwipeGesture       swipeDown direction   UISwipeGestureRecognizerDirection down     self view addGestureRecognizer swipeDown     func respondToSwipeGesture gesture  UIGestureRecognizer        if let swipeGesture   gesture as  UISwipeGestureRecognizer           switch swipeGesture direction           case UISwipeGestureRecognizerDirection right              print  Swiped right           case UISwipeGestureRecognizerDirection down              print  Swiped down           case UISwipeGestureRecognizerDirection left              print  Swiped left           case UISwipeGestureRecognizerDirection up              print  Swiped up           default              break

User · Answer

In Swift 4 2 and Xcode 9 4 1  Add Animation delegate  CAAnimationDelegate to your class    Swipe gesture for left and right let swipeFromRight   UISwipeGestureRecognizer target  self  action   selector didSwipeLeft   swipeFromRight direction   UISwipeGestureRecognizerDirection left menuTransparentView addGestureRecognizer swipeFromRight   let swipeFromLeft   UISwipeGestureRecognizer target  self  action   selector didSwipeRight   swipeFromLeft direction   UISwipeGestureRecognizerDirection right menuTransparentView addGestureRecognizer swipeFromLeft     Swipe gesture selector function  objc func didSwipeLeft gesture  UIGestureRecognizer          We can add some animation also     DispatchQueue main async execute                let animation   CATransition               animation type   kCATransitionReveal             animation subtype   kCATransitionFromRight             animation duration   0 5             animation delegate   self             animation timingFunction   CAMediaTimingFunction name  kCAMediaTimingFunctionEaseInEaseOut                Add this animation to your view             self transparentView layer add animation  forKey  nil              self transparentView removeFromSuperview    Remove or hide your view if requirement                  Swipe gesture selector function  objc func didSwipeRight gesture  UIGestureRecognizer               Add animation here         DispatchQueue main async execute                let animation   CATransition               animation type   kCATransitionReveal             animation subtype   kCATransitionFromLeft             animation duration   0 5             animation delegate   self             animation timingFunction   CAMediaTimingFunction name  kCAMediaTimingFunctionEaseInEaseOut                Add this animation to your view             self transparentView layer add animation  forKey  nil              self transparentView removeFromSuperview    Remove or hide yourview if requirement                 If you want to remove gesture  from view use this code   self transparentView removeGestureRecognizer gesture    Ex   func willMoveFromView view  UIView        if view gestureRecognizers    nil           for gesture in view gestureRecognizers                  view removeGestureRecognizer gesture   This will remove all gestures including tap etc                if let recognizer   gesture as  UISwipeGestureRecognizer                     view removeGestureRecognizer recognizer   This will remove all swipe gestures                 if recognizer direction     left    Especially for left swipe                     view removeGestureRecognizer recognizer                                                      Call this function like    Remove swipe gesture self willMoveFromView view  self transparentView    Like this you can write remaining directions and please careful whether if you have scroll view or not from bottom to top and vice versa  If you have scroll view  you will get conflict for Top to bottom and view versa gestures

User · Answer

After digging around for a while   The shortest way to add swipes for all 4 directions is    override func viewDidLoad         super viewDidLoad           for direction in  UISwipeGestureRecognizer Direction down   up   left   right           let swipeGest   UISwipeGestureRecognizer target  self  action   selector swipeAction               swipeGest direction   direction         self view addGestureRecognizer swipeGest             objc func swipeAction   gesture  UISwipeGestureRecognizer       switch gesture direction       case UISwipeGestureRecognizer Direction right          print  Swiped right       case UISwipeGestureRecognizer Direction down          print  Swiped down       case UISwipeGestureRecognizer Direction left          print  Swiped left       case UISwipeGestureRecognizer Direction up          print  Swiped up       default  break

User · Answer

Swipe Gesture in Swift 5      override func viewDidLoad         super viewDidLoad       let swipeLeft   UISwipeGestureRecognizer target  self  action   selector handleGesture       swipeLeft direction    left     self view  addGestureRecognizer swipeLeft       let swipeRight   UISwipeGestureRecognizer target  self  action   selector handleGesture       swipeRight direction    right     self view  addGestureRecognizer swipeRight       let swipeUp   UISwipeGestureRecognizer target  self  action   selector handleGesture       swipeUp direction    up     self view  addGestureRecognizer swipeUp       let swipeDown   UISwipeGestureRecognizer target  self  action   selector handleGesture       swipeDown direction    down     self view  addGestureRecognizer swipeDown      objc func handleGesture gesture  UISwipeGestureRecognizer  - gt  Void       if gesture direction    UISwipeGestureRecognizer Direction right           print  Swipe Right             else if gesture direction    UISwipeGestureRecognizer Direction left           print  Swipe Left             else if gesture direction    UISwipeGestureRecognizer Direction up           print  Swipe Up             else if gesture direction    UISwipeGestureRecognizer Direction down           print  Swipe Down

User · Answer

Just a cooler swift syntax for Nate s answer    UISwipeGestureRecognizerDirection right   UISwipeGestureRecognizerDirection left   UISwipeGestureRecognizerDirection up   UISwipeGestureRecognizerDirection down  forEach   direction in     let swipe   UISwipeGestureRecognizer target  self  action   selector self respondToSwipeGesture       swipe direction   direction     self view addGestureRecognizer swipe

User · Answer

Swipe gesture to the view you want  or viewcontroller whole view in Swift 5  amp  XCode 11 based on  Alexandre Cassagne  override func viewDidLoad         super viewDidLoad        addSwipe      func addSwipe         let directions   UISwipeGestureRecognizer Direction      right   left   up   down      for direction in directions           let gesture   UISwipeGestureRecognizer target  self  action   selector handleSwipe           gesture direction   direction         self myView addGestureRecognizer gesture    self view           objc func handleSwipe sender  UISwipeGestureRecognizer        let direction   sender direction     switch direction           case  right              print  Gesture direction  Right           case  left              print  Gesture direction  Left           case  up              print  Gesture direction  Up           case  down              print  Gesture direction  Down           default              print  Unrecognized Gesture Direction

User · Answer

Apple Swift version 3 1 - Xcode Version 8 3  8E162   The handy way from Alexandre Cassagne s approach  let directions   UISwipeGestureRecognizerDirection      up   down   right   left  for direction in directions       let gesture   UISwipeGestureRecognizer target  self  action   selector YourClassName handleSwipe gesture         gesture direction   direction     self view  addGestureRecognizer gesture        func handleSwipe gesture  UISwipeGestureRecognizer        print gesture direction      switch gesture direction       case UISwipeGestureRecognizerDirection down          print  down swipe       case UISwipeGestureRecognizerDirection up          print  up swipe       case UISwipeGestureRecognizerDirection left          print  left swipe       case UISwipeGestureRecognizerDirection right          print  right swipe       default          print  other swipe

User · Answer

In Swift 5    let swipeGesture   UISwipeGestureRecognizer target  self  action   selector handleSwipe   swipeGesture direction     left   right   up   down  view addGestureRecognizer swipeGesture

User · Answer

Just like that   Swift 4 2 1   UISwipeGestureRecognizer Direction init    rawValue  UISwipeGestureRecognizer Direction left rawValue               UISwipeGestureRecognizer Direction right rawValue               UISwipeGestureRecognizer Direction up rawValue               UISwipeGestureRecognizer Direction down rawValue

User · Answer

First create a baseViewController and add viewDidLoad this code  swift4    class BaseViewController  UIViewController                      override func viewDidLoad              super viewDidLoad            let swipeRight   UISwipeGestureRecognizer target  self  action   selector swiped            swipeRight direction   UISwipeGestureRecognizerDirection right          self view addGestureRecognizer swipeRight           let swipeLeft   UISwipeGestureRecognizer target  self  action   selector swiped            swipeLeft direction   UISwipeGestureRecognizerDirection left          self view addGestureRecognizer swipeLeft                  Example Tabbar 5 pages       objc func swiped   gesture  UISwipeGestureRecognizer             if gesture direction     left               if  self tabBarController  selectedIndex    lt  5                   self tabBarController  selectedIndex    1                          else if gesture direction     right                if  self tabBarController  selectedIndex    gt  0                    self tabBarController  selectedIndex -  1                                        And use this baseController class   class YourViewController  BaseViewController          its done  Swipe successful       Now you can use all the Controller you have created without writing any code

User · Answer

From the storyboard    Add four swipe gesture recognizers to your view    Set each one with the target direction from the attribute inspector  You can select right  left  up or down  One by one  select the swipe gesture recognizer  control   drag to your view controller  Insert the name  let us say leftGesture  rightGesture  upGesture and downGesture   change the connection to  Action and type to  UISwipeGestureRecognizer   From your viewController    IBAction func rightGesture sender  UISwipeGestureRecognizer        print  Right      IBAction func leftGesture sender  UISwipeGestureRecognizer        print  Left      IBAction func upGesture sender  UISwipeGestureRecognizer        print  Up       IBAction func downGesture sender  UISwipeGestureRecognizer        print  Down

User · Answer

Looks like things have changed lately  In XCode 7 2 the following approach works   override func viewDidLoad         super viewDidLoad        let swipeGesture   UISwipeGestureRecognizer target  self  action   handleSwipe        swipeGesture direction     Down   Up      self view addGestureRecognizer swipeGesture     func handleSwipe sender  UISwipeGestureRecognizer        print sender direction      Tested in Simulator on iOS 8 4 and 9 2 and on actual device on 9 2   Or  using mlcollard s handy extension here   let swipeGesture   UISwipeGestureRecognizer         print  Gesture recognized        swipeGesture direction     Down   Up  self view addGestureRecognizer swipeGesture

User · Answer

For Swift 5 it s updated    Add in ViewDidLoad let gesture   UISwipeGestureRecognizer target  self  action   selector ViewController handleSwipe           gesture direction    right         self view addGestureRecognizer gesture     Add New Method  objc func handleSwipe sender  UISwipeGestureRecognizer            print  swipe direction is  sender direction

User · Answer

It can be done by simply declaring one function which will handle all your swipe UISwipeGestureRecognizer directions  Here is my code   let swipeGestureRight   UISwipeGestureRecognizer target  self  action  selector ViewController respondToSwipeGesture        swipeGestureRight direction   UISwipeGestureRecognizerDirection right self view  addGestureRecognizer swipeGestureRight   let swipeGestureLeft   UISwipeGestureRecognizer target  self  action   selector ViewController respondToSwipeGesture       swipeGestureLeft direction   UISwipeGestureRecognizerDirection left self view addGestureRecognizer swipeGestureLeft   let swipeGestureUp   UISwipeGestureRecognizer target  self  action   selector ViewController respondToSwipeGesture       swipeGestureUp direction   UISwipeGestureRecognizerDirection up self view addGestureRecognizer swipeGestureUp   let swipeGestureDown   UISwipeGestureRecognizer target  self  action   selector ViewController respondToSwipeGesture       swipeGestureDown direction   UISwipeGestureRecognizerDirection down self view addGestureRecognizer swipeGestureDown    Here is the function which will hande the swipedirection functionality   func respondToSwipeGesture   sender  UIGestureRecognizer        if let swipeGesture   sender as  UISwipeGestureRecognizer           switch swipeGesture direction               case UISwipeGestureRecognizerDirection right                  print  right swipe               case UISwipeGestureRecognizerDirection left                  print  leftSwipe               case UISwipeGestureRecognizerDirection up                  print  upSwipe               case UISwipeGestureRecognizerDirection down                  print  downSwipe               default                  break

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