Question

我有ViewPager，当我打开片段时，我更新了我的bd。但是前一个和下一个Fragment也会更新。我没有更多的代码：

PagerAdapter pagerNewsAdapter = new PagerNewsAdapter(super.getSupportFragmentManager(), fragments);

    ViewPager pager = (ViewPager) super.findViewById(R.id.viewpager);

    pager.setAdapter(pagerNewsAdapter);
    pager.setCurrentItem(getIntent().getExtras().getInt(ITEM_POSITION));

如何防止更新碎片n-1和n + 1？

片段代码：

    @Override
    public View onCreateView(LayoutInflater inflater, final ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_new, container,
                false);

       TextView txtTitle = (TextView) view.findViewById(R.id.titleNew);
       txtTitle.setTypeface(custom_font_bold);
       txtTitle.setText(ac.getTitre());

       TextView resume = (TextView) view.findViewById(R.id.res);
       resume.setTypeface(custom_font_bold);
       resume.setText(Html.fromHtml(ac.getResume()));
       resume.setTextColor(getResources().getColor(R.color.grey_500_transparent));

       BD_ACTUALITE.updateViewAct(ac);

       return view;
   }

我的ViewPager：

ArrayList<Fragment> fragments = new ArrayList<>();

        for(Act act : arListNews) {
            FragmentNew frg = new FragmentNew(act);
            fragments.add(frg);
        }

        PagerAdapter pagerNewsAdapter = new PagerNewsAdapter(super.getSupportFragmentManager(), fragments);

        ViewPager pager = (ViewPager) super.findViewById(R.id.viewpager);

        pager.setAdapter(pagerNewsAdapter);
        pager.setCurrentItem(getIntent().getExtras().getInt(ITEM_POSITION));

谢谢所有答案。

Answer 1

没关系，我实现了ViewPager.OnPageChangeListener和Override onPageSelected（）

ViewPager更新上一个和下一个片段

1 个答案: