Android Open Source - 5th Change Gesture Detector

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License

The source code is released under:

GNU General Public License

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Java Source Code

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package com.zhanglin.practice;
/*from   w  w  w  . java 2  s  .  co m*/
import android.view.MotionEvent;
import android.view.GestureDetector.SimpleOnGestureListener;

public class ChangeGestureDetector extends SimpleOnGestureListener
{
  PlayingActivity activity;

  public ChangeGestureDetector(PlayingActivity activity)
  {
    this.activity=activity;
  }

  @Override
  public boolean onFling(MotionEvent e1,MotionEvent e2,float velocityX,float velocityY)
  {
    final int FLING_MIN_DISTANCE=100;// X??y????????(???)
    final int FLING_MIN_VELOCITY=200;// x??y???????(???/?)
    if((e1.getX()-e2.getX())>FLING_MIN_DISTANCE&&Math.abs(velocityX)>FLING_MIN_VELOCITY)
    {
      //activity.last();//?????????activity??????????
    }
    else if((e2.getX()-e1.getX())>FLING_MIN_DISTANCE&&Math.abs(velocityX)>FLING_MIN_VELOCITY)
    {
      //activity.next();//??????
    }
    PlayingActivity.gesture="true";
    return super.onFling(e1,e2,velocityX,velocityY);
  }

}

Java Source Code List