RecyclerView仅显示第一项

Question

我正在尝试从SQLite数据库中获取数据，并将其显示在RecyclerView上。但是，适配器仅显示第一个项目。许多相关主题都在谈论将父布局的高度更改为xxdp或wrap_content，我尝试过。这是代码：

QuoteAdapter.java：

public class QuoteAdapter extends RecyclerView.Adapter<QuoteAdapter.QuoteViewHolder> {

private QuoteItemBinding binding;
private Context mContext;
private Cursor mCursor;

public QuoteAdapter(Context context,Cursor cursor) {
    this.mContext = context;
    this.mCursor = cursor;



}


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


    binding = DataBindingUtil.setContentView(
            (Activity)mContext, R.layout.quote_item);

    int quoteLayoutId = R.layout.quote_item;
    LayoutInflater inflater = LayoutInflater.from(mContext);
    boolean shouldAttachToParentImmediately = false;

    View view = inflater.inflate(quoteLayoutId,parent,shouldAttachToParentImmediately);
    QuoteViewHolder quoteViewHolder = new QuoteViewHolder(view);
     return quoteViewHolder;
}

@Override
public void onBindViewHolder(QuoteViewHolder holder, int position) {

    if(!mCursor.moveToPosition(position)) {
        return;
    }

    String category = mCursor.getString(mCursor.getColumnIndex(QuoteContract.QuoteEntry.COLUMN_CATEGORY));
    String author = mCursor.getString(mCursor.getColumnIndex(QuoteContract.QuoteEntry.COLUMN_AUTHOR));
    String quote = mCursor.getString(mCursor.getColumnIndex(QuoteContract.QuoteEntry.COLUMN_CONTENT));
    Log.d(this.getClass().getSimpleName(),quote);

    holder.mQuoteAuthor.setText(author);
    holder.mQuoteCategory.setText(category);
    holder.mQuoteTextView.setText(quote);

    //Passer l'ID en tag du itemView avec  holder.itemView.setTag(id) si on veut une action paritculiere sur un item
}

@Override
public int getItemCount() {
    return mCursor.getCount();
}

public void swapCursor(Cursor newCursor) {
    if(mCursor != null) mCursor.close();
    mCursor = newCursor;
    if(newCursor != null) {
        this.notifyDataSetChanged();
    }
}

public class QuoteViewHolder extends RecyclerView.ViewHolder{

    public TextView mQuoteTextView;
    public TextView mQuoteAuthor;
    public TextView mQuoteCategory;


    public QuoteViewHolder(View itemView) {
        super(itemView);

        mQuoteTextView = binding.quote;
        mQuoteAuthor = binding.quoteAuthor;
        mQuoteCategory = binding.quoteCategory;
        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Toast.makeText(mContext,"Selected",Toast.LENGTH_LONG).show();

            }
        });
    }



}
}  

MainActivity.java

public class MainActivity extends AppCompatActivity {

private QuoteAdapter mQuoteAdapter;
private SQLiteDatabase mDb;
private static final String TAG = MainActivity.class.getSimpleName();

private ActivityMainBinding mainBinding;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mainBinding = DataBindingUtil.setContentView(this,R.layout.activity_main);
    RecyclerView quoteListRecycler = mainBinding.recyclerMain;

    quoteListRecycler.setLayoutManager(new LinearLayoutManager(this));
    QuoteDbHelper dbHelper = new QuoteDbHelper(this);

    mDb = dbHelper.getWritableDatabase();

    Cursor cursor = getAllQuotes();

    mQuoteAdapter = new QuoteAdapter(this,cursor);

    quoteListRecycler.setAdapter(mQuoteAdapter);



}
private Cursor getAllQuotes() {
   return mDb.query(QuoteContract.QuoteEntry.TABLE_NAME,
           null,
           null,
           null,
           null,
           null,
           QuoteContract.QuoteEntry.COLUMN_DATE);
}
}

quote_item.xml

<?xml version="1.0" encoding="utf-8"?>

android:paddingBottom="@dimen/quote_item_padding"
android:paddingTop="@dimen/quote_item_padding"
android:id="@+id/item_for_recycler"
android:layout_width="match_parent"
android:layout_height="56dp">
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/quoteCategory"
    style="@style/TextAppearance.AppCompat.Display2"
    android:paddingLeft="@dimen/quote_item_padding"
    android:paddingTop="@dimen/quote_item_padding"
    android:textSize="10sp"
    tools:text="Category : Business"/>
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/quote"
    tools:text="Hello there"
    android:layout_gravity="center"
    />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/quoteAuthor"
    android:layout_gravity="bottom|right"
    style="@style/TextAppearance.AppCompat.Display2"
    android:paddingLeft="@dimen/quote_item_padding"
    android:paddingTop="@dimen/quote_item_padding"
    android:paddingRight="@dimen/quote_item_padding"
    android:textSize="10sp"
    tools:text="Leonardo DeMontesquieu"
    />

</FrameLayout>
</layout>

提前谢谢！