Détection gestes

Pour détecter les mouvements droit et gauche (right to left swipe gestures) :

1°) Créer une classe OnTouchListener :

 public class OnTouchListener implements View.OnTouchListener {  
   ListView list;  
   private GestureDetector gestureDetector;  
   private Context context;  
   public OnSwipeList(Context ctx, ListView list) {  
     gestureDetector = new GestureDetector(ctx, new GestureListener());  
     context = ctx;  
     this.list = list;  
   }  
   @Override  
   public boolean onTouch(View v, MotionEvent event) {  
     return gestureDetector.onTouchEvent(event);  
   }  
   public void onSwipeLeft(int pos) {  
   }  
   public void onSwipeRight(int pos) {  
   }  
   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;  
     }  
     private int getPostion(MotionEvent e1) {  
       return list.pointToPosition((int) e1.getX(), (int) e1.getY());  
     }  
     @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) > Math.abs(distanceY)  
           && Math.abs(distanceX) > SWIPE_THRESHOLD  
           && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {  
         if (distanceX > 0)  
           onSwipeRight(getPostion(e1));  
         else  
           onSwipeLeft(getPostion(e1));  
         return true;  
       }  
       return false;  
     }  
   }  
 }  

2°) Utilisation :

     lvItems.setOnTouchListener(new OnTouchListener (AfficList.this,lvItems){  
       public void onSwipeRight(int pos) {  
         AnnonceDbHandler dbHandler = new AnnonceDbHandler(AfficList.this, null, null, 1);  
         String sIdAnn=dbHandler.RechercheIdIndex(pos);  
         //Toast.makeText(AfficList.this, "Right ("+pos+") : "+sIdAnn, Toast.LENGTH_SHORT).show();  
         dbHandler.deleteAnnonce(sIdAnn, AfficList.this);  
         Cursor NewCursor = dbAnnonces.rawQuery("SELECT * FROM annonces", null);  
         todoAdapter.swapCursor(NewCursor);  
         lvItems.setAdapter(todoAdapter);  
         todoAdapter.notifyDataSetChanged();  
       }  
       public void onSwipeLeft(int pos) {  
         AnnonceDbHandler dbHandler = new AnnonceDbHandler(AfficList.this, null, null, 1);  
         String sIdAnn=dbHandler.RechercheIdIndex(pos);  
         //Toast.makeText(AfficList.this, "Right ("+pos+") : "+sIdAnn, Toast.LENGTH_SHORT).show();  
         dbHandler.deleteAnnonce(sIdAnn, AfficList.this);  
         Cursor NewCursor = dbAnnonces.rawQuery("SELECT * FROM annonces", null);  
         todoAdapter.swapCursor(NewCursor);  
         lvItems.setAdapter(todoAdapter);  
         todoAdapter.notifyDataSetChanged();  
       }  
     });  

Références :

https://guides.codepath.com/android/Gestures-and-Touch-Events#swipe-gesture-detection

Detecting Gesture : http://code.tutsplus.com/tutorials/android-sdk-detecting-gestures–mobile-21161

http://stackoverflow.com/questions/937313/android-basic-gesture-detection

http://stackoverflow.com/questions/30908068/android-listview-swipe-right-and-left-to-accept-and-reject