Android中监听ScrollView滑动停止和滑动到底部

/********************监听ScrollView滑动停止*****************************/
scrollView.setOnTouchListener(new OnTouchListener() {
	private int lastY = 0;
	private int touchEventId = -9983761;
	Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			View scroller = (View) msg.obj;
			if (msg.what == touchEventId) {
				if (lastY == scroller.getScrollY()) {
					handleStop(scroller);
				} else {
					handler.sendMessageDelayed(handler.obtainMessage(touchEventId, scroller), 5);
					lastY = scroller.getScrollY();
				}
			}
		}
	};

	public boolean onTouch(View v, MotionEvent event) {
		if (event.getAction() == MotionEvent.ACTION_UP) {
			handler.sendMessageDelayed(handler.obtainMessage(touchEventId, v), 5);
		}
		return false;
	}

	private void handleStop(Object view) {
		ScrollView scroller = (ScrollView) view;
		scrollY = scroller.getScrollY();
	}
});
/***********************************************************/

package com.example.webviewdemo;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ScrollView;

public class ScrollBottomScrollView extends ScrollView {

	private ScrollBottomListener scrollBottomListener;

	public ScrollBottomScrollView(Context context) {
		super(context);
	}

	public ScrollBottomScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public ScrollBottomScrollView(Context context, AttributeSet attrs,int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onScrollChanged(int l, int t, int oldl, int oldt){
		if(t + getHeight() >=  computeVerticalScrollRange()){
			//ScrollView滑动到底部了
			scrollBottomListener.scrollBottom();
		}
	}

	public void setScrollBottomListener(ScrollBottomListener scrollBottomListener){
		this.scrollBottomListener = scrollBottomListener;
	}

	public interface ScrollBottomListener{
		public void scrollBottom();
	}

}