Android 在viewpager适配器notifyDataSetChanged，；这台变压器坏了

我使用

ViewPager

和

PageAdapter

来显示我的数据，并且ViewPager有它的

PageTransformer

，它工作得很好，现在我需要在滑动到新项时更新数据和UI，但问题是当我滑动到新项并调用'adapter.notifyDataSetChanged（），我的数据和UI已更新，但PageTransformer不工作

这是我的密码：

mAdapter = new DynamicsCardAdapter(getContext(), mList);
mViewPager.setPageTransformer(true, new ZoomOutPageTransformer2());
mViewPager.setPageMargin(-(int) (width * 0.30));
mViewPager.setAdapter(mAdapter);

适配器：

public class DynamicsCardAdapter extends PagerAdapter {

    private Context mContext;
    private List<ChildDynamicsInfo> mList;
    private int mPosition = -1;
    private int mChildCount = 0;


    public DynamicsCardAdapter(Context context, List<ChildDynamicsInfo> list) {
        mContext = context;
        mList = list;
    }

    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup viewGroup, int position) {
        View convertView = LayoutInflater.from(mContext).inflate(R.layout.item_parent_dynamics_card, viewGroup, false);
        textName = (TextView) convertView.findViewById(R.id.student_name);
        textName.setText(mList.get(position).name);
        viewGroup.addView(convertView);
        return convertView;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);
    }

    @Override
    public void notifyDataSetChanged() {
        mChildCount = getCount();
        super.notifyDataSetChanged();
    }

    @Override
    public int getItemPosition(@NonNull Object object) {
        //return POSITION_NONE;
        if ( mChildCount > 0) {
            mChildCount --;
            return POSITION_NONE;
        }
        return super.getItemPosition(object);
    }
}

我只是想在滑动到新项目时更新我的UI，并确保我的PageTransformer工作正常，我曾经尝试过：

mViewPager.setAdapter(mAdapter);
mViewPager.setCurrentItem(position);

但是因为我在

onPageSelected（）

上更新了UI，所以它会导致

堆栈溢出

mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        }

        @Override
        public void onPageSelected(int position) {
            mList.get(position).isRead = true;
            mAdapter.notifyDataSetChanged();
        }

        @Override
        public void onPageScrollStateChanged(int state) {
        }
});

mViewPager.setAdapter(mAdapter);
mViewPager.setCurrentItem(position);