Android Open Source - infinitep On Swipe Touch Listener

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License

The source code is released under:

Apache License

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Java Source Code

package es.daconstenla.infinip.customcomponents.events;
/*ww w  .  j a v a 2s . c  o m*/
import android.content.Context;
import android.util.Log;
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 {

  protected final GestureDetector gestureDetector;

  public OnSwipeTouchListener (Context ctx){
    gestureDetector = new GestureDetector(ctx, new GestureListener());
  }

  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) > Math.abs(diffY)) {
          if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
            if (diffX > 0) {
              onSwipeRight();
            } else {
              onSwipeLeft();
            }
          }
        } else {
          if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
            if (diffY > 0) {
              onSwipeBottom();
            } else {
              onSwipeTop();
            }
          }
        }
      } catch (Exception exception) {
        exception.printStackTrace();
      }
      return result;
    }
  }

  public void onSwipeRight() {
  }

  public void onSwipeLeft() {
  }

  public void onSwipeTop() {
  }

  public void onSwipeBottom() {
  }

  @Override
  public boolean onTouch(View arg0, MotionEvent arg1) {
    // TODO Auto-generated method stub
    return false;
  }
}

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