嵌套Recylerview的问题

时间:2018-02-06 08:10:20

标签: android android-recyclerview android-adapter

我有来自Firebase数据的数据,如下所示:

enter image description here

我的问题是我的RecyclerView显示效果不如预期。我的messages的数据已经累积,它应该逐个部分,不应累积。我不知道如何正确解释,因为它有很多代码。

我的当前输出显示如下:

enter image description here

询问教师列表页面:

package xxx.xxx.my.package

import android.content.DialogInterface;
import android.content.Intent;

import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.support.design.widget.BottomSheetBehavior;
import android.support.design.widget.BottomSheetDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.WindowManager;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.balysv.materialripple.MaterialRippleLayout;
import com.github.florent37.fiftyshadesof.FiftyShadesOf;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.material.components.R;
import com.material.components.activity.lesson.LessonActivity;
import com.material.components.adapter.AdapterAskTeacherList;
import com.material.components.adapter.AdapterQuestionToTeacher;
import com.material.components.model.AskTeacherInfo;
import com.material.components.model.AskTeacherItems;
import com.material.components.model.Chapter;
import com.material.components.model.QuestionsToTeacher;
import com.material.components.model.SubChapter;
import com.material.components.model.Subject;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class AskTeacherList extends AppCompatActivity {

    private List<AskTeacherItems> askTeacherItemsList = new ArrayList<>();
    private AdapterAskTeacherList adapterAskTeacherList;
    private RecyclerView askTeacherListRecyclerView;
    private RecyclerView recyclerViewQuestions;
    private SharedPreferences eduYearSharedPreferences;
    private FiftyShadesOf fiftyShadesOf;
    private RelativeLayout layout1;
    private SharedPreferences analysisSharedPreferences;
    private SharedPreferences.Editor editorAnalysisPreferences;
    public ArrayList<QuestionsToTeacher> questionsToTeacherList = new ArrayList<>();
    private AdapterQuestionToTeacher adapterQuestionToTeacher;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_ask_teacher_list);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        analysisSharedPreferences  = getApplicationContext().getSharedPreferences("AnalysisSharedPreferences",MODE_PRIVATE);
        editorAnalysisPreferences = analysisSharedPreferences.edit();

        adapterAskTeacherList = new AdapterAskTeacherList(askTeacherItemsList, questionsToTeacherList, getApplicationContext());
        askTeacherListRecyclerView = findViewById(R.id.askTeacherListRecyclerView);
        layout1 = findViewById(R.id.layout1);
        fiftyShadesOf = FiftyShadesOf.with(this).on(R.id.layout1).start();
        fiftyShadesOf.start();

        askTeacherListRecyclerView.setHasFixedSize(true);
        askTeacherListRecyclerView.setNestedScrollingEnabled(false);


        RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
        askTeacherListRecyclerView.setLayoutManager(layoutManager);
        askTeacherListRecyclerView.setItemAnimator(new DefaultItemAnimator());
        askTeacherListRecyclerView.setAdapter(adapterAskTeacherList);
        adapterAskTeacherList.setOnClickListener(new AdapterAskTeacherList.OnClickListener() {
            @Override
            public void onItemClick(View view, AskTeacherItems obj, int pos) {
                /*
                Intent gotoLesson = new Intent(AskTeacherList.this, LessonActivity.class);
                gotoLesson.putExtra("subchapter_id",obj.subChapterId);
                gotoLesson.putExtra("subChapterTitle",obj.subChapterTitle);
                editorAnalysisPreferences.putString("subchapterId",obj.subChapterId);
                editorAnalysisPreferences.commit();
                startActivity(gotoLesson);
                */
            }

            @Override
            public void onItemLongClick(View view, AskTeacherItems obj, int pos) {

            }
        });

        displayAskTeacherItems();
/*

        adapterQuestionToTeacher = new AdapterQuestionToTeacher(questionsToTeacherList);
        recyclerViewQuestions = findViewById(R.id.recyclerViewQuestions);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext(),LinearLayoutManager.VERTICAL,false);

        recyclerViewQuestions.setLayoutManager(linearLayoutManager);
        recyclerViewQuestions.setHasFixedSize(true);
        recyclerViewQuestions.setNestedScrollingEnabled(false);
        recyclerViewQuestions.setAdapter(adapterQuestionToTeacher);*/



        eduYearSharedPreferences = getApplicationContext().getSharedPreferences("EduYearPreferences",   MODE_PRIVATE);
        showAdminMessage();

    }

    private BottomSheetBehavior mBehavior;
    private BottomSheetDialog mBottomSheetDialog;
    private View bottom_sheet;
    private void showAdminMessage()
    {
        bottom_sheet = findViewById(R.id.bottom_sheet_admin_message);
        mBehavior = BottomSheetBehavior.from(bottom_sheet);

        if (mBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
            mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        }

        final View view = getLayoutInflater().inflate(R.layout.sheet_basic, null);
        ((TextView) view.findViewById(R.id.name)).setText("Test Name");
        ((TextView) view.findViewById(R.id.address)).setText(R.string.middle_lorem_ipsum);
        (view.findViewById(R.id.bt_close)).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mBottomSheetDialog.dismiss();
            }
        });

        (view.findViewById(R.id.bt_details)).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(getApplicationContext(), "Details clicked", Toast.LENGTH_SHORT).show();
            }
        });

        mBottomSheetDialog = new BottomSheetDialog(this);
        mBottomSheetDialog.setContentView(view);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            mBottomSheetDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        }

        mBottomSheetDialog.show();
        mBottomSheetDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
            @Override
            public void onDismiss(DialogInterface dialog) {
                mBottomSheetDialog = null;
            }
        });
    }

    private SubChapter subChapter;
    private  HashMap<String,String> dataAskTeacher = new HashMap<>();
    private void displayAskTeacherItems()
    {
        askTeacherItemsList.clear();
        FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
        String uuid = firebaseAuth.getUid();
        GsonBuilder builder = new GsonBuilder();
        final Gson gson = builder.create();

        FirebaseDatabase.getInstance().getReference().child("ask_teachers/students/"+uuid+"/subjects")
                .addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {



                        for(DataSnapshot snapshot: dataSnapshot.getChildren())
                        {
                            final String subjectId = snapshot.getKey();
                            System.out.println("ssss--subject_id:-"+subjectId);
                            String eduYearId = eduYearSharedPreferences.getString("eduYearValue","");


                            //Chapters label
                            for(DataSnapshot chapterLabel: snapshot.getChildren()){
                                //Chapter data
                                for(DataSnapshot chapterData: chapterLabel.getChildren())
                                {
                                    final String chapterId = chapterData.getKey();
                                    System.out.println("ssss--chapter_id:-"+chapterId);
                                    //Subchapter label
                                    for(DataSnapshot subChapterLabel: chapterData.getChildren())
                                    {
                                        //Subchapter Data
                                        for(DataSnapshot subChapterData: subChapterLabel.getChildren())
                                        {
                                            final String subchapterId = subChapterData.getKey();


                                                FirebaseDatabase.getInstance().getReference().child("subjects/"+eduYearId+"/data_subject/"+subjectId)
                                                        .addListenerForSingleValueEvent(new ValueEventListener() {
                                                            @Override
                                                            public void onDataChange(DataSnapshot dataSubjectSnapshot) {
                                                                String subjectReceived = gson.toJson(dataSubjectSnapshot.getValue());

                                                                if(!subjectReceived.equals("null"))
                                                                {
                                                                    Subject subject = gson.fromJson(subjectReceived,Subject.class);

                                                                    dataAskTeacher.put("subject_title",subject.subjectName);
                                                                }


                                                            }

                                                            @Override
                                                            public void onCancelled(DatabaseError databaseError) {

                                                            }
                                                        });


                                                FirebaseDatabase.getInstance().getReference().child("chapters/"+subjectId+"/chapters/"+chapterId)
                                                        .addListenerForSingleValueEvent(new ValueEventListener() {
                                                            @Override
                                                            public void onDataChange(DataSnapshot dataChapterSnapshot) {

                                                                String chaptersReceived = gson.toJson(dataChapterSnapshot.getValue());

                                                                if(!chaptersReceived.equals("null"))
                                                                {
                                                                    System.out.println(chaptersReceived);
                                                                    Chapter chapter = gson.fromJson(chaptersReceived,Chapter.class);

                                                                    System.out.println("chapters---------");
                                                                    System.out.println(chapter.chapterTitle);
                                                                    dataAskTeacher.put("chapter_title",chapter.chapterTitle);
                                                                }

                                                            }

                                                            @Override
                                                            public void onCancelled(DatabaseError databaseError) {

                                                            }
                                                        });

                                                FirebaseDatabase.getInstance().getReference().child("subchapters/"+chapterId+"/subchapters_data/"+subchapterId)
                                                        .addListenerForSingleValueEvent(new ValueEventListener() {


                                                            @Override
                                                            public void onDataChange(DataSnapshot dataSubChapterSnapshot) {
                                                                String dataSubChaptersReceived = gson.toJson(dataSubChapterSnapshot.getValue());

                                                                if(!dataSubChaptersReceived.equals("null"))
                                                                {
                                                                    fiftyShadesOf.stop();
                                                                    layout1.setVisibility(View.GONE);

                                                                    System.out.println("data subchapters----------------------");
                                                                    System.out.println(dataSubChaptersReceived);
                                                                    subChapter = gson.fromJson(dataSubChaptersReceived,SubChapter.class);
                                                                    dataAskTeacher.put("subchapter_title",subChapter.subchapterTitle);
                                                                    dataAskTeacher.put("subchapter_id",subChapter.subchapterId);

                                                                    System.out.println("subbbbb----"+subChapter.subchapterId);

                                                                    String dataAskTeacherReceived = gson.toJson(dataAskTeacher);
                                                                    AskTeacherItems askTeacherItems = gson.fromJson(dataAskTeacherReceived,AskTeacherItems.class);

                                                                    askTeacherItemsList.add(askTeacherItems);
                                                                    adapterAskTeacherList.notifyDataSetChanged();
                                                                }
                                                            }

                                                            @Override
                                                            public void onCancelled(DatabaseError databaseError) {

                                                            }

                                                        });



                                                //Messages Label
                                            System.out.println("subjechapterId...."+subchapterId);


                                            for(DataSnapshot messagesLabel: subChapterData.getChildren())
                                            {
                                                //Messages Data
                                                for(DataSnapshot messagesData: messagesLabel.getChildren())
                                                {
                                                    String messageQuestion = gson.toJson(messagesData.getValue());
                                                    QuestionsToTeacher questionsToTeacher = gson.fromJson(messageQuestion,QuestionsToTeacher.class);

                                                    //Problem start here
                                                    questionsToTeacherList.add(questionsToTeacher); 
                                                    System.out.println(questionsToTeacher.messages+"    "+questionsToTeacher.questionStatus);
                                                }
                                            }


                                        }
                                    }
                                }
                            }








                        }

                    }
                    @Override
                    public void onCancelled(DatabaseError databaseError) {

                    }
                });
    }

    @Override
    public boolean onSupportNavigateUp() {
        onBackPressed();
        return true;
    }
}

适配器询问教师列表

package xxx.xxx.my.package


import android.content.Context;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.material.components.R;
import com.material.components.activity.askteachers.AskTeacherList;
import com.material.components.model.AskTeacherInfo;
import com.material.components.model.AskTeacherItems;
import com.material.components.model.QuestionsToTeacher;

import java.util.ArrayList;
import java.util.List;

public class AdapterAskTeacherList extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private List<AskTeacherItems> askTeacherListItems = new ArrayList<>();
    private OnClickListener onClickListener = null;
    private List<QuestionsToTeacher> questionsToTeacherList = new ArrayList<>();
    private Context context;

    public AdapterAskTeacherList(List<AskTeacherItems> askTeacherListItems, List<QuestionsToTeacher> questionsToTeacherList, Context context) {
        this.askTeacherListItems = askTeacherListItems;
        this.questionsToTeacherList = questionsToTeacherList;
        this.context = context;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        RecyclerView.ViewHolder vh;
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_ask_teacher_list,parent,false);

        vh = new OriginalViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        if(holder instanceof  OriginalViewHolder)
        {
            OriginalViewHolder view = (OriginalViewHolder) holder;
            final AskTeacherItems askTeacherItems = askTeacherListItems.get(position);
            view.askTeacherStatus.setText(askTeacherItems.askTeacherStatus);
            view.dtCreated.setText(askTeacherItems.dtCreated);
            view.subjectTitle.setText(askTeacherItems.subjectTitle);
            view.chapterTitle.setText(askTeacherItems.chapterTitle);
            view.subchapter.setText(askTeacherItems.subChapterTitle);

            view.lyt_parent_ask_teacher_list.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(onClickListener == null) return;
                    onClickListener.onItemClick(v,askTeacherItems,position);
                }
            });

            view.lyt_parent_ask_teacher_list.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    if (onClickListener == null) return false;
                    onClickListener.onItemLongClick(v, askTeacherItems, position);
                    return true;
                }
            });

            LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context,LinearLayoutManager.VERTICAL,false);

            view.recyclerView.setLayoutManager(linearLayoutManager);
            view.recyclerView.setHasFixedSize(true);
            view.recyclerView.setNestedScrollingEnabled(false);

            AdapterQuestionToTeacher adapterQuestionToTeacher = new AdapterQuestionToTeacher(questionsToTeacherList);

            view.recyclerView.setAdapter(adapterQuestionToTeacher);


        }
    }


    public class OriginalViewHolder extends RecyclerView.ViewHolder{

        public View lyt_parent_ask_teacher_list;
        public TextView subjectTitle, chapterTitle,subchapter,askTeacherStatus,dtCreated;
        public RelativeLayout lyt_checked, lyt_image;
        public RecyclerView recyclerView;
        public OriginalViewHolder(View itemView) {
            super(itemView);
            lyt_parent_ask_teacher_list = itemView.findViewById(R.id.lyt_parent_ask_teacher_list);
            subjectTitle = itemView.findViewById(R.id.subjectTitle);
            chapterTitle = itemView.findViewById(R.id.chapterTitle);
            subchapter = itemView.findViewById(R.id.subchapter);
            askTeacherStatus = itemView.findViewById(R.id.askTeacherStatus);
            dtCreated = itemView.findViewById(R.id.dtCreated);
            lyt_checked = itemView.findViewById(R.id.lyt_checked);
            lyt_image = itemView.findViewById(R.id.lyt_image);
            recyclerView = itemView.findViewById(R.id.recyclerViewQuestions);

        }
    }

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


    public void setOnClickListener(OnClickListener onClickListener) {
        this.onClickListener = onClickListener;
    }


    public interface OnClickListener {
        void onItemClick(View view, AskTeacherItems obj, int pos);

        void onItemLongClick(View view, AskTeacherItems obj, int pos);
    }
}

AdapterQuestionToTeacher

package xxx.xxx.my.package;


import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.material.components.R;
import com.material.components.model.QuestionsToTeacher;

import java.util.ArrayList;
import java.util.List;

public class AdapterQuestionToTeacher extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

    private List<QuestionsToTeacher> questionsToTeacherList = new ArrayList<>();
    public AdapterQuestionToTeacher(List<QuestionsToTeacher> questionsToTeacherList) {
        this.questionsToTeacherList = questionsToTeacherList;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        RecyclerView.ViewHolder vh;
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_ask_teacher_question,parent,false);
        vh = new OriginalViewHolder(v);
        return vh;
    }

    public class OriginalViewHolder extends RecyclerView.ViewHolder{

        public TextView questionStatus,messages;
        public OriginalViewHolder(View itemView) {
            super(itemView);
            questionStatus = itemView.findViewById(R.id.questionStatus);
            messages = itemView.findViewById(R.id.messages);
        }
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if(holder instanceof  OriginalViewHolder)
        {
            OriginalViewHolder view = (OriginalViewHolder) holder;
            final QuestionsToTeacher questionsToTeacher = questionsToTeacherList.get(position);
            view.questionStatus.setText(questionsToTeacher.questionStatus);
            view.messages.setText(questionsToTeacher.messages);
        }
    }

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

content_ask_teacher_list.xml

<include android:id="@+id/layout1" layout="@layout/item_ask_teacher_list" />
<android.support.v7.widget.RecyclerView
    android:id="@+id/askTeacherListRecyclerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

</android.support.v7.widget.RecyclerView>

item_ask_teacher_list.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/lyt_parent_ask_teacher_list"
    style="@style/RippleStyleBlack"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:drawable/dialog_holo_light_frame"
        android:padding="4dp">

        <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingBottom="10dp"
                android:orientation="vertical">


                <android.support.v7.widget.RecyclerView
                    android:id="@+id/recyclerViewQuestions"
                    android:layout_below="@id/dottedHorizontalRule"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" />

            </RelativeLayout>
        </android.support.v7.widget.CardView>
    </RelativeLayout>
</RelativeLayout>

1 个答案:

答案 0 :(得分:1)

很难指出一个特定的地方并且说'#34;这就是问题,&#34;因为那里有很多代码。但事实证明,List<QuestionsToTeacher> questionsToTeacherList内只有一个AdapterAskTeacherList

相反,你应该有一个List<List<QuestionsToTeacher>>。也就是说,列表

要实现此目的,您必须同时更改Activity和外部适配器。在活动中,更改此内容:

public ArrayList<QuestionsToTeacher> questionsToTeacherList = new ArrayList<>();

...

for(DataSnapshot messagesLabel: subChapterData.getChildren())
{
    //Messages Data
    for(DataSnapshot messagesData: messagesLabel.getChildren())
    {
        String messageQuestion = gson.toJson(messagesData.getValue());
        QuestionsToTeacher questionsToTeacher = gson.fromJson(messageQuestion,QuestionsToTeacher.class);

        //Problem start here
        questionsToTeacherList.add(questionsToTeacher); 
        System.out.println(questionsToTeacher.messages+"    "+questionsToTeacher.questionStatus);
    }
}

到此:

public ArrayList<ArrayList<QuestionsToTeacher>> questionsToTeacherList = new ArrayList<>();

...

for(DataSnapshot messagesLabel: subChapterData.getChildren())
{
    ArrayList<QuestionsToTeacher> sublist = new ArrayList<>();
    //Messages Data
    for(DataSnapshot messagesData: messagesLabel.getChildren())
    {
        String messageQuestion = gson.toJson(messagesData.getValue());
        QuestionsToTeacher questionsToTeacher = gson.fromJson(messageQuestion,QuestionsToTeacher.class);

        //Problem start here
        sublist.add(questionsToTeacher); 
        System.out.println(questionsToTeacher.messages+"    "+questionsToTeacher.questionStatus);
    }
    questionsToTeacherList.add(sublist);
}

您在此处执行的操作是ArrayList<QuestionsToTeacher>(问题列表)并将其更改为ArrayList<ArrayList<QuestionsToTeacher>>(问题列表列表)。然后,当您从数据库中读取数据时,您将创建多个ArrayList<QuestionsToTeacher>并将它们添加到列表列表中。

然后,在您的适配器中,更改此:

private List<QuestionsToTeacher> questionsToTeacherList = new ArrayList<>();

public AdapterAskTeacherList(List<AskTeacherItems> askTeacherListItems, List<QuestionsToTeacher> questionsToTeacherList, Context context) {
    ...
    this.questionsToTeacherList = questionsToTeacherList;
    ...
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ...
        AdapterQuestionToTeacher adapterQuestionToTeacher = new AdapterQuestionToTeacher(questionsToTeacherList);
        view.recyclerView.setAdapter(adapterQuestionToTeacher);
        ...
}

到此:

private ArrayList<ArrayList<QuestionsToTeacher>> questionsToTeacherList = new ArrayList<>();

public AdapterAskTeacherList(List<AskTeacherItems> askTeacherListItems, ArrayList<ArrayList<QuestionsToTeacher>> questionsToTeacherList, Context context) {
    this.questionsToTeacherList = questionsToTeacherList;
    ...
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ...
        List<QuestionsToTeacher> sublist = questionsToTeacherList.get(position);
        AdapterQuestionToTeacher adapterQuestionToTeacher = new AdapterQuestionToTeacher(sublist);
        view.recyclerView.setAdapter(adapterQuestionToTeacher);
        ...
}

同样,您正在更改适配器以接受问题列表列表(而不仅仅是问题列表)。关键是,然后您只将一个问题列表传递给每个嵌套的RecyclerView。