要實現多選選擇框，你可以使用Android中的ListView控件和自定義Adapter來實現。以下是一個簡單的示例代碼，演示如何實現多選選擇框：

1. 創建一個布局文件，包含一個ListView控件：

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

2. 創建一個自定義的Adapter類，用于綁定數據和處理多選邏輯：

public class CustomAdapter extends BaseAdapter {
    
    private Context context;
    private List<String> items;
    private SparseBooleanArray selectedItems;
    
    public CustomAdapter(Context context, List<String> items) {
        this.context = context;
        this.items = items;
        this.selectedItems = new SparseBooleanArray();
    }
    
    @Override
    public int getCount() {
        return items.size();
    }
    
    @Override
    public Object getItem(int position) {
        return items.get(position);
    }
    
    @Override
    public long getItemId(int position) {
        return position;
    }
    
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.list_item, null);
        }
        
        CheckBox checkBox = view.findViewById(R.id.checkBox);
        checkBox.setText(items.get(position));
        checkBox.setChecked(selectedItems.get(position));
        
        checkBox.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked) {
                selectedItems.put(position, true);
            } else {
                selectedItems.delete(position);
            }
        });
        
        return view;
    }
    
    public SparseBooleanArray getSelectedItems() {
        return selectedItems;
    }
}

3. 在Activity或Fragment中初始化ListView和Adapter，并設置數據：

ListView listView = findViewById(R.id.listView);
List<String> items = Arrays.asList("Item 1", "Item 2", "Item 3", "Item 4");
CustomAdapter adapter = new CustomAdapter(this, items);
listView.setAdapter(adapter);

4. 最后，你可以在需要的地方獲取用戶選擇的多選項：

SparseBooleanArray selectedItems = adapter.getSelectedItems();
for (int i = 0; i < selectedItems.size(); i++) {
    if (selectedItems.valueAt(i)) {
        int position = selectedItems.keyAt(i);
        String selectedItem = items.get(position);
        Log.d("Selected Item", selectedItem);
    }
}

通過以上步驟，你可以實現一個簡單的多選選擇框功能。你也可以根據自己的需求進行定制和擴展。