ScrollView嵌套Viewpager和ListView的整合

 * 能够兼容ViewPager的ScrollView

 * @Description: 解决了ViewPager在ScrollView中的滑动反弹问题

 */

public class ScrollViewExtend extends ScrollView {

    // 滑动距离及坐标

    private float xDistance, yDistance, xLast, yLast;

    public ScrollViewExtend(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);

    }

}

private boolean canScroll;

private GestureDetector mGestureDetector;

View.OnTouchListener mGestureListener;

public MyScrollView(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;

}

}

}