8 GestureDetector

-----------------------------------------------main.java-----------------------------------------

package com.example.gesture;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity 
implements OnGestureListener{
// 定义手势检测器实例
GestureDetector detector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
detector = new GestureDetector(this);
}


//将该Activity上的触碰事件交给GestureDetector处理
@Override
public boolean onTouchEvent(MotionEvent me)
{
return detector.onTouchEvent(me);
}
@Override
public boolean onDown(MotionEvent arg0)
{
Toast.makeText(this,"onDown" , 8000)
.show();
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY)
{
Toast.makeText(this , "onFling" , 8000)
.show();
return false;
}
@Override
public void onLongPress(MotionEvent e)
{
Toast.makeText(this ,"onLongPress" , 8000)
.show();
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY)
{
Toast.makeText(this ,"onScroll" , 8000)
.show();
return false;
}
@Override
public void onShowPress(MotionEvent e)
{
Toast.makeText(this ,"onShowPress" , 8000)
.show();
}
@Override
public boolean onSingleTapUp(MotionEvent e)
{
Toast.makeText(this ,"onSingleTapUp" , 8000)
.show();
return false;
}


}