android - 用于连续滚动的圆形 ViewPager

Question

我正在显示一个仅包含 ImageViews 的 ViewPager。但是，我需要它以循环方式连续发生。例如:...c > B > A > B > c...

Answer 1

只需实现 ViePager.OnPageChangeListener:

YOUR_VIEWPAGER.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageSelected(int position) {
      currentPage = position;
    }
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
      // not needed
    }
    @Override
    public void onPageScrollStateChanged(int state) {
      if (state == ViewPager.SCROLL_STATE_IDLE) {
        int pageCount = pages.size();

        if (currentPage == 0){
          YOUR_VIEWPAGER.setCurrentItem(pageCount-2,false);
        } else if (currentPage == pageCount-1){
          YOUR_VIEWPAGER.setCurrentItem(1,false);
        }
      }
    }
  });