activity 或 fragment 实现接口  View.OnTouchListener

如：public class MyFragment extends Fragment implements View.OnTouchListener{

 

重写实现方法

 

    @Overridepublic boolean onTouch(View v, MotionEvent event) {//继承了Activity的onTouchEvent方法，直接监听点击事件if(event.getAction() == MotionEvent.ACTION_DOWN) {//当手指按下的时候x1 = event.getX();y1 = event.getY();}if(event.getAction() == MotionEvent.ACTION_MOVE) {//当手指移动的时候x2 = event.getX();y2 = event.getY();if(y1 - y2 > 50) {Toast.makeText(MyServiceTestActivity.this, "向上滑", Toast.LENGTH_SHORT).show();} else if(y2 - y1 > 50) {Toast.makeText(MyServiceTestActivity.this, "向下滑", Toast.LENGTH_SHORT).show();} else if(x1 - x2 > 50) {Toast.makeText(MyServiceTestActivity.this, "向左滑", Toast.LENGTH_SHORT).show();} else if(x2 - x1 > 50) {Toast.makeText(MyServiceTestActivity.this, "向右滑", Toast.LENGTH_SHORT).show();}}if (event.getAction()==MotionEvent.ACTION_UP){Log.i("Lgq","sssssssll离开了lllll==");
//            updview(nowpersion);}return super.onTouchEvent(event);
//        return false;}

view设置监听

slv = (ScrollListenerView)findViewById(R.id.slv);slv.setOnTouchListener(this);

 

分发二：重写方法

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {if (ev.getAction()==MotionEvent.ACTION_UP){LgqLogutil.e("动啦啦啦啦");}return super.dispatchTouchEvent(ev);
}

 

滑动速度：放在MotionEvent.ACTION_MOVE里

VelocityTracker mVelocityTracker = VelocityTracker.obtain();mVelocityTracker.addMovement(ev);mVelocityTracker.computeCurrentVelocity(1000);float xVelocity = mVelocityTracker.getXVelocity();//速度
xVelocity = Math.abs(xVelocity);//去绝对值。向左滑，值为负数

获取最多速度

float  sudu;

if (sudu < xVelocity) {sudu = xVelocity;
}