Android Open Source - BrokenDisplay On Swipe Touch Listener

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Back to project page BrokenDisplay.

License

The source code is released under:

Apache License

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Java Source Code

package com.foolish.brokendisplay;
//from w  w  w .j a  v a2 s. c o  m
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 abstract class OnSwipeTouchListener implements OnTouchListener {

  private 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();
            }
          }
          result = true;
        } else if (Math.abs(diffY) > SWIPE_THRESHOLD
            && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
          if (diffY > 0) {
            onSwipeBottom();
          } else {
            onSwipeTop();
          }
        }
        result = true;
      } catch (Exception exception) {
        exception.printStackTrace();
      }
      return result;
    }
  }

  public abstract void onSwipeRight();

  public abstract void onSwipeLeft();

  public abstract void onSwipeTop();

  public abstract void onSwipeBottom();

  @Override
  public boolean onTouch(View v, MotionEvent event) {
    return gestureDetector.onTouchEvent(event);
  }
}

Java Source Code List