【Android 事件处理】关于Android ViewPager中嵌套ScrollView的手势冲突

先转载一篇他们的文章，很有用！！

《Android 编程下 Touch 事件的分发和消费机制》

         http://blog.csdn.net/hopehe888999/article/details/17241741

在ViewPager中添加该事件处理

// 滑动距离及座标
	private float xDistance, yDistance, xLast, yLast;
		
	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		Log.e("父", "onInterceptTouchEvent");
		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			xDistance = yDistance = 0f;
			xLast = ev.getX();
			yLast = ev.getY();
			break;
		case MotionEvent.ACTION_MOVE:
			final float curX = ev.getX();
			final float curY = ev.getY();

			xDistance += Math.abs(curX - xLast);
			yDistance += Math.abs(curY - yLast);
			xLast = curX;
			yLast = curY;

			if (xDistance > yDistance) {
				return true;
			}
		}
		return false;
	}