Android监测手指上下左右滑动屏幕

publicclass CbMainActivity extendsActivity implements android.view.GestureDetector.OnGestureListener
{
//定义手势检测器实例
GestureDetector detector;

@Override
protectedvoid onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.cb_main);
//创建手势检测器
detector = newGestureDetector(this,this);
}

//将该activity上的触碰事件交给GestureDetector处理
publicboolean onTouchEvent(MotionEvent me){
returndetector.onTouchEvent(me);
}

@Override
publicboolean onDown(MotionEvent arg0) {
returnfalse;
}

/**
* 滑屏监测
*
*/
@Override
publicboolean onFling(MotionEvent e1, MotionEvent e2, floatvelocityX,
floatvelocityY) {
floatminMove = 120;        //最小滑动距离
floatminVelocity = 0;     //最小滑动速度
floatbeginX = e1.getX();
floatendX = e2.getX();
floatbeginY = e1.getY();
floatendY = e2.getY();

if(beginX-endX>minMove&&Math.abs(velocityX)>minVelocity){  //左滑
Toast.makeText(this,velocityX+"左滑",Toast.LENGTH_SHORT).show();
}elseif(endX-beginX>minMove&&Math.abs(velocityX)>minVelocity){  //右滑
Toast.makeText(this,velocityX+"右滑",Toast.LENGTH_SHORT).show();
}elseif(beginY-endY>minMove&&Math.abs(velocityY)>minVelocity){  //上滑
Toast.makeText(this,velocityX+"上滑",Toast.LENGTH_SHORT).show();
}elseif(endY-beginY>minMove&&Math.abs(velocityY)>minVelocity){  //下滑
Toast.makeText(this,velocityX+"下滑",Toast.LENGTH_SHORT).show();
}

returnfalse;
}

@Override
publicvoid onShowPress(MotionEvent arg0) {
// TODO Auto-generated method stub

}

@Override
publicboolean onSingleTapUp(MotionEvent arg0) {
// TODO Auto-generated method stub
returnfalse;
}

@Override
publicvoid onLongPress(MotionEvent arg0) {
// TODO Auto-generated method stub

}

@Override
publicboolean onScroll(MotionEvent e1, MotionEvent e2, floatvelocityX,
floatvelocityY) {

returnfalse;
}

}