UltraViewPager 无法显示多屏问题

https://github.com/alibaba/UltraViewPager

运行sample 应用发现没有一页显示多屏。

public void setMultiScreen(float ratio) {    multiScrRatio = ratio;    if (pagerAdapter != null) {        pagerAdapter.setMultiScrRatio(ratio);        needsMeasurePage = true;    }    float pageMargin = (1 - ratio) * getResources().getDisplayMetrics().widthPixels;    //setPageMargin((int) (pageMargin));}

setPageMargin((int) (pageMargin));注释后，显示多屏