从适配器更新活动中的EditText

// 适配器类
public class MyAdapter extends BaseAdapter {
    private List<String> data;
    private Context context;

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

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

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.item_layout, parent, false);
        }

        EditText editText = convertView.findViewById(R.id.editText);
        editText.setText(data.get(position));

        return convertView;
    }
}

// 活动中的代码
public class MainActivity extends AppCompatActivity {
    private List<String> dataList;
    private MyAdapter adapter;
    private EditText editText;

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

        dataList = new ArrayList<>();
        dataList.add("Item 1");
        dataList.add("Item 2");
        dataList.add("Item 3");

        adapter = new MyAdapter(dataList, this);

        ListView listView = findViewById(R.id.listView);
        listView.setAdapter(adapter);

        editText = findViewById(R.id.editText);

        Button updateButton = findViewById(R.id.updateButton);
        updateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dataList.set(0, editText.getText().toString());
                adapter.notifyDataSetChanged();
            }
        });
    }
}