android - Android-如何使用Recyclerview滑动TabLayout中的选项卡

Question

我有一个片段中的四个选项卡。我正在将数据加载到RecyclerView中。我没有为每个选项卡使用每个片段，而是为所有选项卡使用了单个片段。我只更改了适配器中的数据集。选择选项卡时，它会加载该数据，以便其正常运行。现在我要滑动页面，它应该转到下一个标签...

public class CreateFlipFragment extends Fragment {

private TabLayout tabLayout;
private RecyclerView recyclerView;
private StickerListAdapter adapter;
private ArrayList<Sticker> stickerList;
private ViewPager viewPagerStickers;

public CreateFlipFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    view = inflater.inflate(R.layout.fragment_create_flip_new, container, false);

    tabLayout = (TabLayout) view.findViewById(R.id.tablayout_flips);
    recyclerView = (RecyclerView) view.findViewById(R.id.rv_flips_sticker);
    viewPagerStickers = (ViewPager) view.findViewById(R.id.vp_stickers);

    stickerList = new ArrayList<>();
    adapter = new StickerListAdapter(stickerList);
    recyclerView.setHasFixedSize(true);
    GridLayoutManager layoutManager = new GridLayoutManager(getActivity(), 3);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(adapter);

    setupTab();

    tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

        viewPagerStickers.setCurrentItem(tab.getPosition());

        @Override
        public void onTabSelected(TabLayout.Tab tab) {

            switch (tab.getPosition()) {
                case 0:
                    loadStickers1();
                    break;
                case 1:
                    loadStickers2();

                    }
                    break;
                case 2:
                    loadStickers4();

                    break;
                case 3:
                    loadStickers5();

                    break;
                default:
                    stickerList.clear();
                    adapter.notifyDataSetChanged();
                    break;
            }
        }

        @Override
        public void onTabUnselected(TabLayout.Tab tab) {

        }

        @Override
        public void onTabReselected(TabLayout.Tab tab) {

        }
    });
   }

   private void setupTab() {
    tabLayout.addTab(tabLayout.newTab());
    tabLayout.addTab(tabLayout.newTab());
    tabLayout.addTab(tabLayout.newTab());
    tabLayout.addTab(tabLayout.newTab());
    tabLayout.getTabAt(0).setIcon(R.drawable.meme0);
    tabLayout.getTabAt(1).setIcon(R.drawable.bubble0);
    tabLayout.getTabAt(2).setIcon(R.drawable.ic_sticker_text_off);
    tabLayout.getTabAt(3).setIcon(R.drawable.ic_sticker_image_off);
   }

   private void loadStickers1() {
    stickerList.clear();
    stickerList.add(new Sticker(null, R.drawable.word4, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word5, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word6, Sticker.STICKER_TYPE.STICKER));
    adapter.notifyDataSetChanged();
   }
   private void loadStickers2() {
    stickerList.clear();
    stickerList.add(new Sticker(null, R.drawable.word4, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word5, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word6, Sticker.STICKER_TYPE.STICKER));
    adapter.notifyDataSetChanged();
   }
   private void loadStickers3() {
    stickerList.clear();
    stickerList.add(new Sticker(null, R.drawable.word4, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word5, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word6, Sticker.STICKER_TYPE.STICKER));
    adapter.notifyDataSetChanged();
   }
   private void loadStickers4() {
    stickerList.clear();
    stickerList.add(new Sticker(null, R.drawable.word4, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word5, Sticker.STICKER_TYPE.STICKER));
    stickerList.add(new Sticker(null, R.drawable.word6, Sticker.STICKER_TYPE.STICKER));
    adapter.notifyDataSetChanged();
   }
  }

fragment_create_flip_new.xml

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

    <android.support.design.widget.TabLayout
        android:id="@+id/tablayout_flips"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/gray_very_light"
        app:tabGravity="fill"
        app:tabIndicatorHeight="1dp"
        app:tabMode="fixed"
        app:tabSelectedTextColor="@color/colorPrimary"
        app:tabTextAppearance="@style/TabDefalt"
        app:tabTextColor="@color/text_color" />

     <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_flips_sticker"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/transparent" />

     <android.support.v4.view.ViewPager
        android:id="@+id/vp_stickers"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

</LinearLayout>

一切正常...现在我要添加滑动页面到下一个标签页并更改该数据集...帮助我...在此先感谢...

Answer 1

在片段中创建一个方法来每次更新视图。添加viewpager addOnPageChangeListener并找到要更新视图的片段。

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


        }

        @Override
        public void onPageSelected(int position) {
            Fragment fragment = YOURADAPTER.getItem(tab.getPosition());
            if (fragment != null && fragment.getClass().getSimpleName().equals(YOURFRAGMENT.class.getSimpleName())) {
                YOURFRAGMENT playListFragment = (YOURFRAGMENT) YOURADAPTER.getCurrentItem();;
                playListFragment.updateData(data);
            }
        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    });