如何停止在flutter中选择多个容器？

import 'package:flutter/material.dart';

class MultipleContainerSelection extends StatefulWidget {
  @override
  _MultipleContainerSelectionState createState() =>
      _MultipleContainerSelectionState();
}

class _MultipleContainerSelectionState extends State<MultipleContainerSelection> {
  List<bool> isSelected = [false, false, false];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Multiple Container Selection'),
      ),
      body: Column(
        children: [
          Container(
            color: isSelected[0] ? Colors.blue : Colors.grey,
            height: 100,
            width: double.infinity,
            child: GestureDetector(
              onTap: () {
                setState(() {
                  isSelected[0] = !isSelected[0];
                });
              },
              child: Center(
                child: Text(
                  'Container 1',
                  style: TextStyle(fontSize: 20, color: Colors.white),
                ),
              ),
            ),
          ),
          Container(
            color: isSelected[1] ? Colors.blue : Colors.grey,
            height: 100,
            width: double.infinity,
            child: GestureDetector(
              onTap: () {
                setState(() {
                  isSelected[1] = !isSelected[1];
                });
              },
              child: Center(
                child: Text(
                  'Container 2',
                  style: TextStyle(fontSize: 20, color: Colors.white),
                ),
              ),
            ),
          ),
          Container(
            color: isSelected[2] ? Colors.blue : Colors.grey,
            height: 100,
            width: double.infinity,
            child: GestureDetector(
              onTap: () {
                setState(() {
                  isSelected[2] = !isSelected[2];
                });
              },
              child: Center(
                child: Text(
                  'Container 3',
                  style: TextStyle(fontSize: 20, color: Colors.white),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MultipleContainerSelection(),
  ));
}