title: Android : How can I Swipe Up and Swipe Down in touchListener event of Imageview?
body: <p>I have application in which I need onTouch swipe Up and Down event.
  I have implemented onTouch event in application but I have not any idea related to Swipe Up and Swipe Down
  Does anybody have a code that how can I do this?</p>
  
  <pre><code>final ImageView imageView = listOfImageView.get(i);
              imageView.setOnTouchListener(new OnTouchListener () {
                  private float oldPosition;
                  public boolean onTouch(View view, MotionEvent event) {
                      if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
                          this.oldPosition = event.getY();
  
                      }
                   }
              });
  </code></pre>