如何向listview中的每一项添加数据？

// 创建一个适配器类
class MyAdapter extends BaseAdapter {
    private List<String> dataList;
    private Context context;

    public MyAdapter(Context context, List<String> dataList) {
        this.context = context;
        this.dataList = dataList;
    }

    @Override
    public int getCount() {
        return dataList.size();
    }

    @Override
    public Object getItem(int position) {
        return dataList.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // 加载listview的每一项布局
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(R.layout.list_item, null);

        // 获取当前项的数据
        String data = dataList.get(position);

        // 将数据显示在相应的视图控件中
        TextView textView = view.findViewById(R.id.text_view);
        textView.setText(data);

        return view;
    }
}

// 在Activity中使用适配器
public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private List<String> dataList;

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

        // 初始化数据源
        dataList = new ArrayList<>();
        dataList.add("数据1");
        dataList.add("数据2");
        dataList.add("数据3");

        // 创建适配器对象
        MyAdapter adapter = new MyAdapter(this, dataList);

        // 绑定适配器
        listView = findViewById(R.id.list_view);
        listView.setAdapter(adapter);
    }
}