Android How to handle right to left swipe gestures

Question

I want my app to recognize when a user swipes from right to left on the phone screen   How to do this

User · Answer

import android content Context import android view GestureDetector import android view GestureDetector SimpleOnGestureListener import android view MotionEvent import android view View import android view View OnTouchListener         Detects left and right swipes across a view      class OnSwipeTouchListener context  Context  onSwipeCallBack  OnSwipeCallBack     OnTouchListener        private var gestureDetector   GestureDetector     private var onSwipeCallBack  OnSwipeCallBack  null      init            gestureDetector   GestureDetector context  GestureListener            this onSwipeCallBack   onSwipeCallBack             companion object            private val SWIPE DISTANCE THRESHOLD   100         private val SWIPE VELOCITY THRESHOLD   100              fun onSwipeLeft           fun onSwipeRight             override fun onTouch v  View  event  MotionEvent   Boolean             return gestureDetector onTouchEvent event             private inner class GestureListener   SimpleOnGestureListener              override fun onDown e  MotionEvent   Boolean               return true                    override fun onFling eve1  MotionEvent   eve2  MotionEvent   velocityX  Float  velocityY  Float   Boolean               try                   if eve1    null amp  amp  eve2   null                        val distanceX   eve2  x - eve1  x                     val distanceY   eve2  y - eve1  y                     if  Math abs distanceX   gt  Math abs distanceY   amp  amp  Math abs distanceX   gt  SWIPE DISTANCE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  distanceX  gt  0                              onSwipeCallBack   onSwipeLeftCallback                           else                             onSwipeCallBack   onSwipeRightCallback                           return true                                                      catch  exception Exception                   exception printStackTrace                              return false

User · Answer

Expanding on Mirek s answer  for the case when you want to use the swipe gestures inside a scroll view  By default the touch listener for the scroll view get disabled and therefore scroll action does not happen  In order to fix this you need to override the dispatchTouchEvent method of the Activity and return the inherited version of this method after you re done with your own listener   In order to do a few modifications to Mirek s code  I add a getter for the gestureDetector in the OnSwipeTouchListener   public GestureDetector getGestureDetector        return  gestureDetector      Declare the OnSwipeTouchListener inside the Activity as a class-wide field   OnSwipeTouchListener onSwipeTouchListener    Modify the usage code accordingly   onSwipeTouchListener   new OnSwipeTouchListener MyActivity this        public void onSwipeTop             Toast makeText MyActivity this   top   Toast LENGTH SHORT  show              public void onSwipeRight             Toast makeText MyActivity this   right   Toast LENGTH SHORT  show              public void onSwipeLeft             Toast makeText MyActivity this   left   Toast LENGTH SHORT  show              public void onSwipeBottom             Toast makeText MyActivity this   bottom   Toast LENGTH SHORT  show               imageView setOnTouchListener onSwipeTouchListener     And override the dispatchTouchEvent method inside Activity    Override     public boolean dispatchTouchEvent MotionEvent ev           swipeListener getGestureDetector   onTouchEvent ev                return super dispatchTouchEvent ev              Now both scroll and swipe actions should work

User · Answer

Mirek Rusin answeir is very good  But  there is small bug  and fix is requried -  public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY                boolean result   false              try                   float diffY   e2 getY   - e1 getY                    float diffX   e2 getX   - e1 getX                    if  Math abs diffX   gt  Math abs diffY                         if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  diffX  gt  0                                if  getOnSwipeListener      null                                    getOnSwipeListener   onSwipeRight                                                            else                               if  getOnSwipeListener      null                                    getOnSwipeListener   onSwipeLeft                                                                                    result   true                                                          else if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                        if  diffY  gt  0                            if  getOnSwipeListener      null                                getOnSwipeListener   onSwipeBottom                                                    else                           if  getOnSwipeListener      null                                getOnSwipeListener   onSwipeTop                                                                        result   true                      What the difference  We set result   true  only if we have checked that all requrinments  both SWIPE THRESHOLD  and SWIPE VELOCITY THRESHOLD are Ok    This is important if we discard swipe if some of requrinments are not achieved  and we have to do smth in onTouchEvent method of OnSwipeTouchListener

User · Answer

To add an onClick as well  here s what I did           in OnSwipeTouchListener class  private final class GestureListener extends SimpleOnGestureListener                normal GestureListener  code      Override     public boolean onSingleTapConfirmed MotionEvent e            onClick       my method         return super onSingleTapConfirmed e               end GestureListener class      public void onSwipeRight                public void onSwipeLeft                public void onSwipeTop                public void onSwipeBottom                public void onClick                    as normal      Override     public boolean onTouch View v  MotionEvent event            return gestureDetector onTouchEvent event           end OnSwipeTouchListener class     I m using Fragments  so using getActivity   for context  This is how I implemented it - and it works     myLayout setOnTouchListener new OnSwipeTouchListener getActivity                  public void onSwipeTop                     Toast makeText getActivity     top   Toast LENGTH SHORT  show                              public void onSwipeRight                     Toast makeText getActivity     right   Toast LENGTH SHORT  show                              public void onSwipeLeft                     Toast makeText getActivity     left   Toast LENGTH SHORT  show                              public void onSwipeBottom                     Toast makeText getActivity     bottom   Toast LENGTH SHORT  show                               public void onClick                    Toast makeText getActivity     clicked   Toast LENGTH SHORT  show

User · Answer

This question was asked many years ago  Now  there is a better solution  SmartSwipe  https   github com luckybilly SmartSwipe  code looks like this   SmartSwipe wrap contentView           addConsumer new StayConsumer      contentView stay while swiping with StayConsumer          enableAllDirections     enable directions as needed          addListener new SimpleSwipeListener                  Override             public void onSwipeOpened SmartSwipeWrapper wrapper  SwipeConsumer consumer  int direction                      direction                       1  left                     2  right                     4  top                     8  bottom

User · Answer

If you want to display some buttons with actions when an list item is swipe are a lot of libraries on the internet that have this behavior  I implemented the library that I found on the internet and I am very satisfied  It is very simple to use and very quick  I improved the original library and I added a new click listener for item click  Also I added font awesome library  http   fortawesome github io Font-Awesome   and now you can simply add a new item title and specify the icon name from font awesome   Here is the github link

User · Answer

If you also need to process click events here some modifications   public class OnSwipeTouchListener implements OnTouchListener        private final GestureDetector gestureDetector   new GestureDetector new GestureListener          public boolean onTouch final View v  final MotionEvent event            return gestureDetector onTouchEvent event              private final class GestureListener extends SimpleOnGestureListener            private static final int SWIPE THRESHOLD   100          private static final int SWIPE VELOCITY THRESHOLD   100             Override         public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY                boolean result   false              try                   float diffY   e2 getY   - e1 getY                    float diffX   e2 getX   - e1 getX                    if  Math abs diffX   gt  Math abs diffY                         if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  diffX  gt  0                                result   onSwipeRight                              else                               result   onSwipeLeft                                                                      else                       if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                            if  diffY  gt  0                                result   onSwipeBottom                              else                               result   onSwipeTop                                                                                    catch  Exception exception                    exception printStackTrace                              return result                       public boolean onSwipeRight             return false             public boolean onSwipeLeft             return false             public boolean onSwipeTop             return false             public boolean onSwipeBottom             return false            And sample usage       background setOnClickListener new View OnClickListener              Override         public void onClick View arg0                toggleSomething                          background setOnTouchListener new OnSwipeTouchListener             public boolean onSwipeTop                 Toast makeText MainActivity this   top   Toast LENGTH SHORT  show                return true                    public boolean onSwipeRight                 Toast makeText MainActivity this   right   Toast LENGTH SHORT  show                return true                    public boolean onSwipeLeft                 Toast makeText MainActivity this   left   Toast LENGTH SHORT  show                return true                    public boolean onSwipeBottom                 Toast makeText MainActivity this   bottom   Toast LENGTH SHORT  show                return true

User · Answer

In order to have Click Listener  DoubleClick Listener  OnLongPress Listener  Swipe Left  Swipe Right  Swipe Up  Swipe Down on Single View you need to setOnTouchListener  i e   view setOnTouchListener new OnSwipeTouchListener MainActivity this                  Override             public void onClick                     super onClick                       your on click here                             Override             public void onDoubleClick                     super onDoubleClick                       your on onDoubleClick here                             Override             public void onLongClick                     super onLongClick                       your on onLongClick here                             Override             public void onSwipeUp                     super onSwipeUp                       your swipe up here                             Override             public void onSwipeDown                     super onSwipeDown                       your swipe down here                              Override             public void onSwipeLeft                     super onSwipeLeft                       your swipe left here                              Override             public void onSwipeRight                     super onSwipeRight                       your swipe right here                                 For this you need OnSwipeTouchListener class that implements OnTouchListener   public class OnSwipeTouchListener implements View OnTouchListener    private GestureDetector gestureDetector   public OnSwipeTouchListener Context c        gestureDetector   new GestureDetector c  new GestureListener        public boolean onTouch final View view  final MotionEvent motionEvent        return gestureDetector onTouchEvent motionEvent      private final class GestureListener extends GestureDetector SimpleOnGestureListener        private static final int SWIPE THRESHOLD   100      private static final int SWIPE VELOCITY THRESHOLD   100        Override     public boolean onDown MotionEvent e            return true              Override     public boolean onSingleTapUp MotionEvent e            onClick            return super onSingleTapUp e               Override     public boolean onDoubleTap MotionEvent e            onDoubleClick            return super onDoubleTap e               Override     public void onLongPress MotionEvent e            onLongClick            super onLongPress e                 Determines the fling velocity and then fires the appropriate swipe event accordingly      Override     public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY            boolean result   false          try               float diffY   e2 getY   - e1 getY                float diffX   e2 getX   - e1 getX                if  Math abs diffX   gt  Math abs diffY                     if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                        if  diffX  gt  0                            onSwipeRight                          else                           onSwipeLeft                                                          else                   if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                        if  diffY  gt  0                            onSwipeDown                          else                           onSwipeUp                                                                    catch  Exception exception                exception printStackTrace                      return result           public void onSwipeRight        public void onSwipeLeft        public void onSwipeUp        public void onSwipeDown        public void onClick         public void onDoubleClick         public void onLongClick

User · Answer

My solution is similar to those above but I have abstracted the gesture handling into an abstract class OnGestureRegisterListener java  which includes swipe  click and long click gestures    OnGestureRegisterListener java  public abstract class OnGestureRegisterListener implements View OnTouchListener        private final GestureDetector gestureDetector      private View view       public OnGestureRegisterListener Context context            gestureDetector   new GestureDetector context  new GestureListener                 Override     public boolean onTouch View view  MotionEvent event            this view   view          return gestureDetector onTouchEvent event              public abstract void onSwipeRight View view       public abstract void onSwipeLeft View view       public abstract void onSwipeBottom View view       public abstract void onSwipeTop View view       public abstract void onClick View view       public abstract boolean onLongClick View view        private final class GestureListener extends GestureDetector SimpleOnGestureListener            private static final int SWIPE THRESHOLD   100          private static final int SWIPE VELOCITY THRESHOLD   100            Override         public boolean onDown MotionEvent e                return true                      Override         public void onLongPress MotionEvent e                onLongClick view               super onLongPress e                       Override         public boolean onSingleTapUp MotionEvent e                onClick view               return super onSingleTapUp e                       Override         public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY                boolean result   false              try                   float diffY   e2 getY   - e1 getY                    float diffX   e2 getX   - e1 getX                    if  Math abs diffX   gt  Math abs diffY                         if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  diffX  gt  0                                onSwipeRight view                             else                               onSwipeLeft view                                                     result   true                                                          else if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                        if  diffY  gt  0                            onSwipeBottom view                         else                           onSwipeTop view                                             result   true                                  catch  Exception exception                    exception printStackTrace                              return result                       And use it like so  Note that you can also easily pass in your View parameter   OnGestureRegisterListener onGestureRegisterListener   new OnGestureRegisterListener this        public void onSwipeRight View view               Do something           public void onSwipeLeft View view               Do something           public void onSwipeBottom View view               Do something           public void onSwipeTop View view               Do something           public void onClick View view               Do something           public boolean onLongClick View view                Do something         return true            Button button   findViewById R id my button   button setOnTouchListener onGestureRegisterListener

User · Answer

This issue still exists  An OnTouchListener with an OnSwipeTouchListener solves it in a simple way  myView setOnTouchListener      new View OnTouchListener             public boolean onTouch View v  MotionEvent event                if  swipe onTouch v  event                     if  event getAction      MotionEvent ACTION UP                           your code here                      return true                    else if  event getAction      MotionEvent ACTION DOWN                           your code here                      return true                                              return false                       where swipe refers to a class which records whether swipe methods have been invoked  then forwards events to the delegate OnSwipeTouchListener  private class DirtyOnSwipeTouchListener extends OnSwipeTouchListener       private boolean dirty   false      private OnSwipeTouchListener delegate       public DirtyOnSwipeTouchListener Context ctx  OnSwipeTouchListener delegate            super ctx            this delegate   delegate             private void reset             dirty   false             public void onSwipeTop             dirty   true          delegate onSwipeTop               public void onSwipeRight             dirty   true          delegate onSwipeRight               public void onSwipeLeft             dirty   true          delegate onSwipeLeft               public void onSwipeBottom             dirty   true          delegate onSwipeBottom                Override     public boolean onTouch View v  MotionEvent event            try               super onTouch v  event                return dirty            finally               dirty   false

User · Answer

You don t need complicated calculations  It can be done just by using OnGestureListener interface from GestureDetector class   Inside onFling method you can detect all four directions like this   MyGestureListener java   import android util Log  import android view GestureDetector  import android view MotionEvent   public class MyGestureListener implements GestureDetector OnGestureListener       private static final long VELOCITY THRESHOLD   3000        Override     public boolean onDown final MotionEvent e   return false          Override     public void onShowPress final MotionEvent e           Override     public boolean onSingleTapUp final MotionEvent e   return false          Override     public boolean onScroll final MotionEvent e1  final MotionEvent e2  final float distanceX                          final float distanceY   return false          Override     public void onLongPress final MotionEvent e           Override     public boolean onFling final MotionEvent e1  final MotionEvent e2                         final float velocityX                         final float velocityY            if Math abs velocityX   lt  VELOCITY THRESHOLD                       amp  amp  Math abs velocityY   lt  VELOCITY THRESHOLD               return false   if the fling is not fast enough then it s just like drag                      if velocity in X direction is higher than velocity in Y direction            then the fling is horizontal  else- gt vertical         if Math abs velocityX   gt  Math abs velocityY                if velocityX  gt   0                   Log i  TAG    swipe right                 else   if velocityX is negative  then it s towards left                 Log i  TAG    swipe left                           else              if velocityY  gt   0                   Log i  TAG    swipe down                 else                  Log i  TAG    swipe up                                     return true            usage   GestureDetector mDetector   new GestureDetector MainActivity this  new MyGestureListener      view setOnTouchListener new View OnTouchListener         Override     public boolean onTouch final View v  final MotionEvent event           return mDetector onTouchEvent event

User · Answer

the usage of Edward Brey s answer in Kotlin   view setOnTouchListener object  OnSwipeTouchListener this          override fun onSwipeLeft             super onSwipeLeft                 override fun onSwipeRight             super onSwipeRight

User · Answer

OnSwipeTouchListener java   import android content Context  import android view GestureDetector  import android view GestureDetector SimpleOnGestureListener  import android view MotionEvent  import android view View  import android view View OnTouchListener   public class OnSwipeTouchListener implements OnTouchListener        private final GestureDetector gestureDetector       public OnSwipeTouchListener  Context ctx           gestureDetector   new GestureDetector ctx  new GestureListener                 Override     public boolean onTouch View v  MotionEvent event            return gestureDetector onTouchEvent event              private final class GestureListener extends SimpleOnGestureListener            private static final int SWIPE THRESHOLD   100          private static final int SWIPE VELOCITY THRESHOLD   100            Override         public boolean onDown MotionEvent e                return true                      Override         public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY                boolean result   false              try                   float diffY   e2 getY   - e1 getY                    float diffX   e2 getX   - e1 getX                    if  Math abs diffX   gt  Math abs diffY                         if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  diffX  gt  0                                onSwipeRight                              else                               onSwipeLeft                                                      result   true                                                          else if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                        if  diffY  gt  0                            onSwipeBottom                          else                           onSwipeTop                                              result   true                                  catch  Exception exception                    exception printStackTrace                              return result                       public void onSwipeRight                public void onSwipeLeft                public void onSwipeTop                public void onSwipeBottom               Usage   imageView setOnTouchListener new OnSwipeTouchListener MyActivity this        public void onSwipeTop             Toast makeText MyActivity this   top   Toast LENGTH SHORT  show              public void onSwipeRight             Toast makeText MyActivity this   right   Toast LENGTH SHORT  show              public void onSwipeLeft             Toast makeText MyActivity this   left   Toast LENGTH SHORT  show              public void onSwipeBottom             Toast makeText MyActivity this   bottom   Toast LENGTH SHORT  show

User · Answer

This code detects left and right swipes  avoids deprecated API calls  and has other miscellaneous improvements over earlier answers          Detects left and right swipes across a view      public class OnSwipeTouchListener implements OnTouchListener        private final GestureDetector gestureDetector       public OnSwipeTouchListener Context context            gestureDetector   new GestureDetector context  new GestureListener                public void onSwipeLeft                public void onSwipeRight                public boolean onTouch View v  MotionEvent event            return gestureDetector onTouchEvent event              private final class GestureListener extends SimpleOnGestureListener            private static final int SWIPE DISTANCE THRESHOLD   100          private static final int SWIPE VELOCITY THRESHOLD   100            Override         public boolean onDown MotionEvent e                return true                      Override         public boolean onFling MotionEvent e1  MotionEvent e2  float velocityX  float velocityY                float distanceX   e2 getX   - e1 getX                float distanceY   e2 getY   - e1 getY                if  Math abs distanceX   gt  Math abs distanceY   amp  amp  Math abs distanceX   gt  SWIPE DISTANCE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                    if  distanceX  gt  0                      onSwipeRight                    else                     onSwipeLeft                    return true                            return false                      Use it like this   view setOnTouchListener new OnSwipeTouchListener context         Override     public void onSwipeLeft                Whatever

User · Answer

I know its a bit late since 2012 but I hope it will help someone since I think it s a shorter and cleaner code than most of the answers  view setOnTouchListener  v  event  - gt             int action   MotionEventCompat getActionMasked event    switch action        case  MotionEvent ACTION DOWN            Log d DEBUG TAG  quot Action was DOWN quot            return true       case  MotionEvent ACTION MOVE            Log d DEBUG TAG  quot Action was MOVE quot            return true       case  MotionEvent ACTION UP            Log d DEBUG TAG  quot Action was UP quot            return true       case  MotionEvent ACTION CANCEL            Log d DEBUG TAG  quot Action was CANCEL quot            return true       case  MotionEvent ACTION OUTSIDE            Log d DEBUG TAG  quot Movement occurred outside bounds  quot                     quot of current screen element quot            return true       default           return super onTouchEvent event              of course you can leave only the relevant gestures to you  src  https   developer android com training gestures detector

User · Answer

public class TranslatorSwipeTouch implements OnTouchListener      private String TAG  TranslatorSwipeTouch        SuppressWarnings  deprecation      private GestureDetector detector new GestureDetector new TranslatorGestureListener          Override    public boolean onTouch View view  MotionEvent event            return detector onTouchEvent event         private class TranslatorGestureListener extends SimpleOnGestureListener        private final int GESTURE THRESHOULD 100      private final int GESTURE VELOCITY THRESHOULD 100        Override     public boolean onDown MotionEvent e            return true              Override     public boolean onFling MotionEvent event1 MotionEvent event2 float velocityx float velocityy                try                       float diffx event2 getX  -event1 getX                float diffy event2 getY  -event1 getY                 if Math abs diffx  gt Math abs diffy                                 if Math abs diffx  gt GESTURE THRESHOULD  amp  amp  Math abs velocityx  gt GESTURE VELOCITY THRESHOULD                                        if diffx gt 0                                                onSwipeRight                                              else                                               onSwipeLeft                                                                      else                               if Math abs diffy  gt GESTURE THRESHOULD  amp  amp  Math abs velocityy  gt GESTURE VELOCITY THRESHOULD                                        if diffy gt 0                                                 onSwipeBottom                                              else                                               onSwipeTop                                                                            catch Exception e                        Log d TAG     e getMessage                       return false                        public void onSwipeRight                   Toast makeText this getClass   get   swipe right   Toast LENGTH SHORT  show            Log i TAG   Right              public void onSwipeLeft                 Log i TAG   Left              Toast makeText MyActivity this   swipe left   Toast LENGTH SHORT  show               public void onSwipeTop                 Log i TAG   Top              Toast makeText MyActivity this   swipe top   Toast LENGTH SHORT  show               public void onSwipeBottom                 Log i TAG   Bottom              Toast makeText MyActivity this   swipe bottom   Toast LENGTH SHORT  show

User · Answer

I ve been doing similar things  but for horizontal swipes only  import android content Context import android view GestureDetector import android view MotionEvent import android view View  abstract class OnHorizontalSwipeListener val context  Context    View OnTouchListener            companion object            const val SWIPE MIN   50          const val SWIPE VELOCITY MIN   100            private val detector   GestureDetector context  GestureListener         override fun onTouch view  View  event  MotionEvent    detector onTouchEvent event           abstract fun onRightSwipe        abstract fun onLeftSwipe        private inner class GestureListener   GestureDetector SimpleOnGestureListener                  override fun onDown e  MotionEvent    true          override fun onFling e1  MotionEvent  e2  MotionEvent  velocityX  Float  velocityY  Float                Boolean                val deltaY   e2 y - e1 y             val deltaX   e2 x - e1 x              if  Math abs deltaX   lt  Math abs deltaY   return false              if  Math abs deltaX   lt  SWIPE MIN                      amp  amp  Math abs velocityX   lt  SWIPE VELOCITY MIN  return false              if  deltaX  gt  0  onRightSwipe   else onLeftSwipe                return true                     And then it can be used for view components   private fun listenHorizontalSwipe view  View        view setOnTouchListener object   OnHorizontalSwipeListener context                  override fun onRightSwipe                     Log d TAG   Swipe right                              override fun onLeftSwipe                     Log d TAG   Swipe left

User · Answer

Kotlin version of  Mirek Rusin is here   OnSwipeTouchListener kt    open class OnSwipeTouchListener ctx  Context    OnTouchListener        private val gestureDetector  GestureDetector      companion object            private val SWIPE THRESHOLD   100         private val SWIPE VELOCITY THRESHOLD   100            init           gestureDetector   GestureDetector ctx  GestureListener               override fun onTouch v  View  event  MotionEvent   Boolean           return gestureDetector onTouchEvent event             private inner class GestureListener   SimpleOnGestureListener               override fun onDown e  MotionEvent   Boolean               return true                    override fun onFling e1  MotionEvent  e2  MotionEvent  velocityX  Float  velocityY  Float   Boolean               var result   false             try                   val diffY   e2 y - e1 y                 val diffX   e2 x - e1 x                 if  Math abs diffX   gt  Math abs diffY                         if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                            if  diffX  gt  0                                onSwipeRight                             else                               onSwipeLeft                                                     result   true                                         else if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                        if  diffY  gt  0                            onSwipeBottom                         else                           onSwipeTop                                             result   true                                 catch  exception  Exception                    exception printStackTrace                              return result                        open fun onSwipeRight           open fun onSwipeLeft           open fun onSwipeTop           open fun onSwipeBottom          Usage   view setOnTouchListener object   OnSwipeTouchListener context         override fun onSwipeTop             super onSwipeTop              override fun onSwipeBottom             super onSwipeBottom              override fun onSwipeLeft             super onSwipeLeft              override fun onSwipeRight             super onSwipeRight              the open keyword was the point for me

User · Answer

Edward Brey s method works great  If someone would also like to copy  amp  paste the imports for the OnSwipeTouchListener  here they are    import android content Context   import android view GestureDetector   import android view GestureDetector SimpleOnGestureListener   import android view MotionEvent   import android view View   import android view View OnTouchListener

User · Answer

Here is simple Android Code for detecting gesture direction  In MainActivity java and activity main xml  write the following code      MainActivity java   import java util ArrayList   import android app Activity  import android gesture Gesture  import android gesture GestureLibraries  import android gesture GestureLibrary  import android gesture GestureOverlayView  import android gesture GestureOverlayView OnGesturePerformedListener  import android gesture GestureStroke  import android gesture Prediction  import android os Bundle  import android widget Toast   public class MainActivity extends Activity implements         OnGesturePerformedListener        GestureOverlayView gesture      GestureLibrary lib      ArrayList lt Prediction gt  prediction        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            lib   GestureLibraries fromRawResource MainActivity this                  R id gestureOverlayView1           gesture    GestureOverlayView  findViewById R id gestureOverlayView1           gesture addOnGesturePerformedListener this               Override     public void onGesturePerformed GestureOverlayView overlay  Gesture gesture            ArrayList lt GestureStroke gt  strokeList   gesture getStrokes               prediction   lib recognize gesture           float f     strokeList get 0  points          String str                if  f 0   lt  f f length - 2                 str    Right gesture             else if  f 0   gt  f f length - 2                 str    Left gesture             else               str    no direction                     Toast makeText getApplicationContext    str  Toast LENGTH LONG  show                   activity main xml    lt android gesture GestureOverlayView xmlns android  http   schemas android com apk res android      xmlns tools  http   schemas android com tools      xmlns android1  http   schemas android com apk res android      xmlns android2  http   schemas android com apk res android      android id    id gestureOverlayView1      android layout width  match parent      android layout height  match parent      android1 orientation  vertical   gt        lt TextView         android id    id textView1          android layout width  wrap content          android layout height  wrap content          android text  Draw gesture          android textAppearance   android attr textAppearanceMedium    gt    lt  android gesture GestureOverlayView gt

User · Answer

Use SwipeListView and let it handle the gesture detection for you

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A little modification of  Mirek Rusin answer and now you can detect multitouch swipes  This code is on Kotlin   class OnSwipeTouchListener ctx  Context  val onGesture   gestureCode  Int  - gt  Unit    OnTouchListener    private val SWIPE THRESHOLD   200 private val SWIPE VELOCITY THRESHOLD   200  private val gestureDetector  GestureDetector  var fingersCount   0  fun resetFingers         fingersCount   0    init       gestureDetector   GestureDetector ctx  GestureListener       override fun onTouch v  View  event  MotionEvent   Boolean       if  event pointerCount  gt  fingersCount            fingersCount   event pointerCount           return gestureDetector onTouchEvent event     private inner class GestureListener   SimpleOnGestureListener          override fun onDown e  MotionEvent   Boolean           return true            override fun onFling e1  MotionEvent  e2  MotionEvent  velocityX  Float  velocityY  Float   Boolean           var result   false         try               val diffY   e2 y - e1 y             val diffX   e2 x - e1 x             if  Math abs diffX   gt  Math abs diffY                     if  Math abs diffX   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityX   gt  SWIPE VELOCITY THRESHOLD                        if  diffX  gt  0                            val gesture   when  fingersCount                                1 - gt  Gesture SWIPE RIGHT                             2 - gt  Gesture TWO FINGER SWIPE RIGHT                             3 - gt  Gesture THREE FINGER SWIPE RIGHT                             else - gt  -1                                                   if  gesture  gt  0                                onGesture invoke gesture                                                  else                           val gesture   when  fingersCount                                1 - gt  Gesture SWIPE LEFT                             2 - gt  Gesture TWO FINGER SWIPE LEFT                             3 - gt  Gesture THREE FINGER SWIPE LEFT                             else - gt  -1                                                   if  gesture  gt  0                                onGesture invoke gesture                                                                      resetFingers                                   else if  Math abs diffY   gt  SWIPE THRESHOLD  amp  amp  Math abs velocityY   gt  SWIPE VELOCITY THRESHOLD                    if  diffY  gt  0                        val gesture   when  fingersCount                            1 - gt   Gesture SWIPE DOWN                         2 - gt  Gesture TWO FINGER SWIPE DOWN                         3 - gt  Gesture THREE FINGER SWIPE DOWN                         else - gt  -1                                           if  gesture  gt  0                            onGesture invoke gesture                                          else                       val gesture   when  fingersCount                            1 - gt   Gesture SWIPE UP                         2 - gt  Gesture TWO FINGER SWIPE UP                         3 - gt  Gesture THREE FINGER SWIPE UP                         else - gt  -1                                           if  gesture  gt  0                            onGesture invoke gesture                                                          resetFingers                             result   true            catch  exception  Exception                exception printStackTrace                      return result            Where Gesture SWIPE RIGHT and others are unique integer indentificator of gesture that I m using to detect kind of gesture later in my activity   rootView  setOnTouchListener OnSwipeTouchListener this        gesture - gt  log Gesture parseName this  gesture         So you see gesture here is an integer variable that holds value I have passed before

[android] Android: How to handle right to left swipe gestures

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