VerticalScrollView.java

package com.mzoneapp.zjjmb.view;

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

public class VerticalScrollView extends ScrollView {

	private float xDistance, yDistance, lastX, lastY;

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

	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			xDistance = yDistance = 0f;
			lastX = ev.getX();
			lastY = ev.getY();
			break;
		case MotionEvent.ACTION_MOVE:
			final float curX = ev.getX();
			final float curY = ev.getY();
			xDistance += Math.abs(curX - lastX);
			yDistance += Math.abs(curY - lastY);
			lastX = curX;
			lastY = curY;
			if (xDistance > yDistance)
				return false;
		}

		return super.onInterceptTouchEvent(ev);
	}
}