在ListView适配器中重写getView()方法，并使用setAdapter()方法将ListView与适配器关联。以下是一个示例代码片段：

public class MyListAdapter extends BaseAdapter {
    private ArrayList myList;

    public MyListAdapter(ArrayList list) {
        myList = list;
    }

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

    @Override
    public Object getItem(int position) {
        return myList.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(parent.getContext())
                    .inflate(R.layout.list_item, parent, false);
        }
        TextView textView = convertView.findViewById(R.id.item_text_view);
        textView.setText(myList.get(position));
        return convertView;
    }
}

// 在Activity中：

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

ListView listView = findViewById(R.id.my_list_view);
MyListAdapter adapter = new MyListAdapter(myList);
listView.setAdapter(adapter);