ViewPager在ScrollView中无法正常滑动的问题

来源：

能够兼容ViewPager的ScrollView http://justwyy.iteye.com/blog/1567390

ScrollView中嵌入ViewPager，ViewPager的滑动出现问题  http://bbs.csdn.net/topics/390213480

在网上找到两种方法，都是自定义scrollview，大家可以试试。

方法一：

public class CustomScrollView extends ScrollView {
    private boolean canScroll;

    private GestureDetector mGestureDetector;
    View.OnTouchListener mGestureListener;

    public CustomScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mGestureDetector = new GestureDetector(new YScrollDetector());
        canScroll = true;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if(ev.getAction() == MotionEvent.ACTION_UP)
            canScroll = true;
        return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
    }

    class YScrollDetector extends SimpleOnGestureListener {
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            if(canScroll)
                if (Math.abs(distanceY) >= Math.abs(distanceX))
                    canScroll = true;
                else
                    canScroll = false;
            return canScroll;
        }
    }
}

方法二：

public class CustomScrollView extends ScrollView {
    // 滑动距离及坐标
    private float xDistance, yDistance, xLast, yLast;  

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

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        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 false;
                }
        }  

        return super.onInterceptTouchEvent(ev);
    }
}