scrollview 与自定义控件的上下滑动冲突

/**

 * 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);

    }

}




这种解决方法虽然解决了两者横向滑动的冲突，但是的缺点在于，上下滑动无法让控件响应到。

所以在这里需要对ACTIOM_MOVE进行判断，可以对XY轴的移动坐标进行比较，

代码如下

/** * 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);}@Overridepublic 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;//如果X轴移动量大于Y轴的1.5倍及以上 则返回true scrollview滑动 if(xDistance> yDistance*1.5){return true;}else{return false;}}return super.onInterceptTouchEvent(ev);}}