我的评论在Recycler视图中显示了无限滚动

Question

这是我的问题，滚动评论时显示无限视图 当布局滚动时，它会显示无穷大的视图（注释），而不会连续结束。我只想显示用户的确切注释（而不是无穷大） 任何人请帮助我摆脱它 提前致谢 这是我的Java代码

public class CommentsActivity extends AppCompatActivity implements View.OnClickListener {
private RecyclerView mList;
private PaginationAdapter mAdapter;
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mList = findViewById(R.id.list);
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext(),
            LinearLayoutManager.VERTICAL, false);
    mList.setLayoutManager(mLayoutManager);
    mList.setItemAnimator(new DefaultItemAnimator());
}

@Override
protected void onStart() {
    super.onStart();

    String storyKey = getIntent().getStringExtra(EXTRA_STORY_KEY);

    if (storyKey != null) {
        // load comments
        showComments(storyKey);
    }
}

@Override
protected void onStop() {
    super.onStop();

    if (mAdapter != null) {
        mAdapter.cleanup();
    }
}
private void showComments(String storyKey) {
    if (mAdapter == null) {

        Analytics.trackOpenComments(storyKey);
        DatabaseReference ref = Comment.collection(storyKey);

        mAdapter = new PaginationAdapter<CommentViewHolder>(CommentViewHolder.class, R.layout.comment_item, ref) {
            @Override
            protected void populateViewHolder(CommentViewHolder viewHolder, DataSnapshot snapshot, int position) {
                viewHolder.bind(snapshot.getValue(Comment.class), snapshot.getRef());
            }
        };

        mList.setAdapter(mAdapter);
        mAdapter.notifyDataSetChanged();
    } else {
        mAdapter.notifyDataSetChanged();
    }
}
private void showComments(String storyKey) {
    if (mAdapter == null) {

        Analytics.trackOpenComments(storyKey);
        DatabaseReference ref = Comment.collection(storyKey);

        mAdapter = new PaginationAdapter<CommentViewHolder>(CommentViewHolder.class, R.layout.comment_item, ref) {
            @Override
            protected void populateViewHolder(CommentViewHolder viewHolder, DataSnapshot snapshot, int position) {
                viewHolder.bind(snapshot.getValue(Comment.class), snapshot.getRef());
            }
        };

        mList.setAdapter(mAdapter);
        mAdapter.notifyDataSetChanged();
    } else {
        mAdapter.notifyDataSetChanged();
    }
}
private void showComments(String storyKey) {
    if (mAdapter == null) {

        Analytics.trackOpenComments(storyKey);
        DatabaseReference ref = Comment.collection(storyKey);

        mAdapter = new PaginationAdapter<CommentViewHolder>(CommentViewHolder.class, R.layout.comment_item, ref) {
            @Override
            protected void populateViewHolder(CommentViewHolder viewHolder, DataSnapshot snapshot, int position) {
                viewHolder.bind(snapshot.getValue(Comment.class), snapshot.getRef());
            }
        };

        mList.setAdapter(mAdapter);
        mAdapter.notifyDataSetChanged();
    } else {
        mAdapter.notifyDataSetChanged();
    }
}

这是我用于回收者视图的xml代码

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="me.a01eg.canyon.mustage.CommentsActivity">

<android.support.v7.widget.RecyclerView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:focusable="true"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0"
    tools:listitem="@layout/comment_item" />