android控件ViewPager动态添加删除一条数据

private List<String> mPathList;
private FragmentStatePagerAdapter mPagerAdapter;

//1.使用FragmentStatePagerAdapter
mPagerAdapter = new FragmentStatePagerAdapter(getSupportFragmentManager()) {
      @Override
      public int getCount() {
        return mPathList.size();
      }

      @Override
      public Fragment getItem(int i) {
        return PhotoPreviewFragment.newInstance(mPathList.get(i));
      }

      @Override
      public int getItemPosition(Object object) {
　　　　　　//2.重写getItemPostman方法返回POSITION_NONE，这样添加或者删除数据后刷新才有效
        return PagerAdapter.POSITION_NONE;
      }

    };

    mViewPager.setAdapter(mPagerAdapter);

int currentItem = mViewPager.getCurrentItem();
mPathList.remove(currentItem);
mPagerAdapter.notifyDataSetChanged();