如何添加两个recyclerview相同的fragmnet

Question

我将添加两个RecyclerView相同的fragment，如图片所示，但我已经完成了第一次recyclelerview 。我没有得到如何使用我现有的代码添加一个，请帮助我。我的RecyclerView代码

Communication.class

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_communication_summary, container, false);

    mRecyclerView = (RecyclerView) view.findViewById(R.id.comm_expected_recycler_view);

    mRecyclerView.setHasFixedSize(true);
    mRecyclerView.setHasFixedSize(true);
    mRecyclerViewLayoutManager = new LinearLayoutManager(getContext());
    mRecyclerView.setLayoutManager(mRecyclerViewLayoutManager);

private class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {

    private List<CommunicationVO>  mCommunicationVOsList;

    public MyRecyclerViewAdapter(List<CommunicationVO> communicationVOsList) {

        mCommunicationVOsList = communicationVOsList;
    }

@Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.communication_summary_list_item, parent, false);

        ViewHolder viewHolder = new ViewHolder(view);

        return viewHolder;
    }
@Override
    public void onBindViewHolder(ViewHolder holder, int position) {

        if (holder != null) {

            CommunicationVO communicationVO = mCommunicationVOsList.get(position);

            holder.expInvoiceNumber.setText(communicationVO.getExpInvoiceNumber());
            holder.expAmount.setText(CashPunditUtils.formatAmount(communicationVO.getExpAmount()));
            holder.expDueDate.setText(CashPunditUtils.formatDate(CashPunditUtils.extractDateAndTime(communicationVO.getExpDueDate()), "dd-MMM-yy"));
            holder.expPromisedDate.setText(CashPunditUtils.formatDate(CashPunditUtils.extractDateAndTime(communicationVO.getExpPromisedDate()), "dd-MMM-yy"));

        }
    }
@Override
    public int getItemCount() {
        return mCommunicationVOsList.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        public TextView expInvoiceNumber, expAmount, expDueDate, expPromisedDate;

        public ViewHolder(View itemView) {

            super(itemView);

            expInvoiceNumber = (TextView) itemView.findViewById(R.id.textview_invnum);
            expAmount = (TextView) itemView.findViewById(R.id.textview_amount);
            expDueDate = (TextView) itemView.findViewById(R.id.textview_duedate);
            expPromisedDate = (TextView) itemView.findViewById(R.id.textview_promisedate);
        }
    }

Answer 1

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_one"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.5" />

    <android.support.v7.widget.RecyclerView
       android:id="@+id/recycler_two"
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="0.5" />
</LinearLayout>

在您的Java代码中创建同一个适配器的两个不同实例，并将该适配器设置为两个回收器视图。由于您具有相同的视图和不同的数据，因此您可以使用相同的适配器进行回收器视图。希望这对您有帮助。

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_communication_summary, container, false);


    //RecyclerView One
    mRecyclerView1 = (RecyclerView) view.findViewById(R.id.recycler_one);
    mRecyclerView1.setHasFixedSize(true);
    adapter1 = new MyRecyclerViewAdapter(communicationVOsList);
    mRecyclerViewLayoutManager1 = new LinearLayoutManager(getContext());
    mRecyclerView1.setLayoutManager(mRecyclerViewLayoutManager1);
    mRecyclerView1.setAdapter(adapter1);

    //RecyclerView  two
    mRecyclerView2 = (RecyclerView) view.findViewById(R.id.recycler_two);
    adapter2 = new MyRecyclerViewAdapter(communicationVOsList);
    mRecyclerView2.setHasFixedSize(true);
    mRecyclerViewLayoutManager2 = new LinearLayoutManager(getContext());
    mRecyclerView2.setLayoutManager(mRecyclerViewLayoutManager2);
    mRecyclerView2.setAdapter(adapter2);

    private class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {

        private List<CommunicationVO>  mCommunicationVOsList;
        public MyRecyclerViewAdapter(List<CommunicationVO> communicationVOsList) {
            mCommunicationVOsList = communicationVOsList;
        }

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.communication_summary_list_item, parent, false);
            ViewHolder viewHolder = new ViewHolder(view);
            return viewHolder;
        }
        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {

            if (holder != null) {

                CommunicationVO communicationVO = mCommunicationVOsList.get(position);
                holder.expInvoiceNumber.setText(communicationVO.getExpInvoiceNumber());
                holder.expAmount.setText(CashPunditUtils.formatAmount(communicationVO.getExpAmount()));
                holder.expDueDate.setText(CashPunditUtils.formatDate(CashPunditUtils.extractDateAndTime(communicationVO.getExpDueDate()), "dd-MMM-yy"));
                holder.expPromisedDate.setText(CashPunditUtils.formatDate(CashPunditUtils.extractDateAndTime(communicationVO.getExpPromisedDate()), "dd-MMM-yy"));

            }
        }
        @Override
        public int getItemCount() {
            return mCommunicationVOsList.size();
        }

        public class ViewHolder extends RecyclerView.ViewHolder {

            public TextView expInvoiceNumber, expAmount, expDueDate, expPromisedDate;
            public ViewHolder(View itemView) {
                super(itemView);
                expInvoiceNumber = (TextView) itemView.findViewById(R.id.textview_invnum);
                expAmount = (TextView) itemView.findViewById(R.id.textview_amount);
                expDueDate = (TextView) itemView.findViewById(R.id.textview_duedate);
                expPromisedDate = (TextView) itemView.findViewById(R.id.textview_promisedate);
            }
        }

修改：

不要忘记在recyclerview中创建适配器对象。添加这些代码行并尝试一次。

mRecyclerViewAdapter = new MyRecyclerViewAdapter(mCommunicationVOsList);
            mRecyclerView.setAdapter(mRecyclerViewAdapter);