如何在Android中显示GridView中的标题行？

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

    <!-- 标题行 -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="标题1" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="标题2" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="标题3" />

    </LinearLayout>

    <!-- GridView -->
    <GridView
        android:id="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="3" />

</LinearLayout>

public class GridAdapter extends BaseAdapter {

    private static final int VIEW_TYPE_TITLE = 0;
    private static final int VIEW_TYPE_ITEM = 1;

    private Context mContext;
    private List<String> mData;

    public GridAdapter(Context context, List<String> data) {
        mContext = context;
        mData = data;
    }

    @Override
    public int getCount() {
        return mData.size() + 1; // 加上标题行
    }

    @Override
    public Object getItem(int position) {
        if (position == 0) {
            return null; // 标题行不需要返回数据
        }
        return mData.get(position - 1); // 减去标题行的位置偏移
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public int getItemViewType(int position) {
        if (position == 0) {
            return VIEW_TYPE_TITLE;
        }
        return VIEW_TYPE_ITEM;
    }

    @Override
    public int getViewTypeCount() {
        return 2; // 标题行和普通行两种类型
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (getItemViewType(position) == VIEW_TYPE_TITLE) {
            // 标题行
            if (convertView == null) {
                convertView = LayoutInflater.from(mContext).inflate(R.layout.item_title, parent, false);
            }
            // 设置标题文本
            TextView titleTextView = convertView.findViewById(R.id.title_textview);
            titleTextView.setText("标题行");

        } else {
            // 普通行
            if (convertView == null) {
                convertView = LayoutInflater.from(mContext).inflate(R.layout.item_grid, parent, false);
            }
            // 设置普通行的数据
            TextView itemTextView = convertView.findViewById(R.id.item_textview);
            itemTextView.setText(mData.get(position - 1)); // 减去标题行的位置偏移
        }

        return convertView;
    }
}

public class MainActivity extends AppCompatActivity {

    private GridView mGridView;
    private GridAdapter mAdapter;

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

        // 初始化数据
        List<String> data = new ArrayList<>();
        data.add("数据1");
        data.add("数据2");
        data.add("数据3");
        data.add("数据4");
        data.add("数据5");
        data.add("数据6");

        // 创建适配器
        mAdapter = new GridAdapter(this, data);

        // 获取GridView并设置适配器
        mGridView = findViewById(R.id.gridview);
        mGridView.setAdapter(mAdapter);
    }
}