在Android Studio中显示ListView中的数据

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
/>

public class CustomAdapter extends BaseAdapter {
    private Context context;
    private List<String> data;

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

    @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) {
            LayoutInflater inflater = LayoutInflater.from(context);
            convertView = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
        }

        TextView textView = convertView.findViewById(android.R.id.text1);
        textView.setText(data.get(position));

        return convertView;
    }
}

ListView listView = findViewById(R.id.listView);
List<String> dataList = new ArrayList<>();
dataList.add("Item 1");
dataList.add("Item 2");
dataList.add("Item 3");

CustomAdapter adapter = new CustomAdapter(this, dataList);
listView.setAdapter(adapter);