完美解决ScrollView嵌套ViewPager滑动失效和无法正常滑动冲突问题

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 * Copyright 2011, 2012 Chris Banes.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

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package com.baiyi.tuan.views.pulldownview;



import android.content.Context;

import android.util.AttributeSet;

import android.view.GestureDetector;

import android.view.GestureDetector.SimpleOnGestureListener;

import android.view.MotionEvent;

import android.widget.ScrollView;



/**

 * 完美解决ScrollView嵌套ViewPager滑动失效和无法正常滑动冲突问题

 * 

 * @author leict

 * 

 */

public class VerticalScrollView extends ScrollView {



	private GestureDetector mGestureDetector;



	public VerticalScrollView(Context context, AttributeSet attrs) {

		super(context, attrs);

		mGestureDetector = new GestureDetector(context, new YScrollDetector());

	}



	@Override

	public boolean onInterceptTouchEvent(MotionEvent ev) {

		return super.onInterceptTouchEvent(ev)

				&& mGestureDetector.onTouchEvent(ev);

	}



	class YScrollDetector extends SimpleOnGestureListener {



		@Override

		public boolean onScroll(MotionEvent e1, MotionEvent e2,

				float distanceX, float distanceY) {

			// 如果我们滚动更接近水平方向,返回false,让子视图来处理它

			return (Math.abs(distanceY) > Math.abs(distanceX));

		}

	}



}