android - ViewPager，与多个选项卡的 RecyclerView 相同的 fragment

Question

我正在开发一个应用程序，它有一个类别列表。如果我们点击类别，那么我必须在选项卡中显示不同的子类别，每个选项卡都有一个产品列表。

一切正常，选项卡和 fragment 都加载了正确的数据，只有 recyclerview onClick 给出了不正确的项目(来自相邻 fragment 的 recyclerview 的项目) .主要发生在 viewpager 滑动时。

Activity 中的代码:

    PagerAdapter adapter = new PagerAdapter
            (getSupportFragmentManager(), tabLayout.getTabCount(), response); 
    // response is a list of subcategories and products 
    viewPager.setOffscreenPageLimit(1);
    viewPager.setAdapter(adapter);
    viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
    tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
        @Override
        public void onTabSelected(TabLayout.Tab tab) {
            viewPager.setCurrentItem(tab.getPosition());
        }

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

        }

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

        }
    });

PagerAdapter 中的代码:

public class PagerAdapter extends FragmentStatePagerAdapter {
int mNumOfTabs;
SubCategoryResponse response;

public PagerAdapter(FragmentManager fm, int NumOfTabs, SubCategoryResponse response) {
    super(fm);
    this.mNumOfTabs = NumOfTabs;
    this.response = response;
}

@Override
public Fragment getItem(int position) {
    L.m(position +" => "+response.getList().get(position).getProducts().get(0).getName());
    TabFragment fragmentDummy = TabFragment.getInstance(position, response.getList().get(position).getProducts());
    return fragmentDummy;
}

@Override
public int getCount() {
    return mNumOfTabs;
}

TabFragment 中的代码:

public class TabFragment extends Fragment implements ProductAdapter.mClickListener {
@Bind(R.id.list_container_fragment)
LinearLayout listContainerFragment;
@Bind(R.id.list_products)
RecyclerView productListView;

private ProductAdapter productsAdapter;
private Dialog myDialog;
private LinearLayoutManager linearLayoutManager;
private ArrayList<Products> responseProducts = null;

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

public static TabFragment getInstance(int position, ArrayList<Products> response) {
    TabFragment fragmentDummy = new TabFragment();
    Bundle args = new Bundle();
    args.putParcelableArrayList("PRODUCTS", response);
    args.putInt("position", position);
    fragmentDummy.setArguments(args);
    return fragmentDummy;
}

@Override
public void setArguments(Bundle args) {
    super.setArguments(args);
    this.responseProducts = args.getParcelableArrayList("PRODUCTS");
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_tab, container, false);
    ButterKnife.bind(this, view);
    linearLayoutManager = new LinearLayoutManager(getActivity());
    linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    productListView.setLayoutManager(linearLayoutManager);
    productListView.setItemAnimator(new DefaultItemAnimator());
    populateList();
    return view;
}

public void populateList() {
    L.m("populate list");
    if (responseProducts.size() > 0) {
        L.m("Inside populate list => " + responseProducts.get(0).getName());
        productsAdapter = new ProductAdapter(responseProducts);
        productsAdapter.setListner(getActivity(), this);
        productListView.setAdapter(productsAdapter);
        productListView.setHasFixedSize(true);
    } else {
        showError("No Products to Show");
    }
}

public void showError(String msg) {
    SnackbarManager.show(
            Snackbar.with(getActivity()) // context
                    .text(msg) // text to be displayed
                    .textColor(Color.WHITE) // change the text color
                            // .textTypeface(myTypeface) // change the text font
                    .color(getResources().getColor(R.color.colorPrimary)) // change the background color
                    .duration(Snackbar.SnackbarDuration.LENGTH_LONG)
            , getActivity());
}

@Override
public void mClickDetails(View view, int pos) {
    startActivity(new Intent(getActivity(), ProductDetailsActivity.class)
            .putExtra("PRODUCT", responseProducts.get(pos).getName()));
}

@Override
public void onResume() {
    // TODO Auto-generated method stub
    super.onResume();
    //populateList();
}
}

我不知道这里出了什么问题。

请帮忙，谢谢。

Answer 1

很好地解决了问题，

从 RecyclerView 适配器中删除了静态字段。

现在工作正常。