我尝试使用onPress中的setState方法更改容器的颜色，但应用程序崩溃，错误为setState未定义。我想寻求帮助。任何帮助提供者都将不胜感激。谢谢

import 'package:flutter/material.dart';
import 'AllContainers.dart';
import 'ColumnContainer.dart';
import 'AllConstants.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';


 enum AgeStatus{
  child,
old
}

class MyHomePage extends StatefulWidget {

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  AgeStatus? ageStatus;



  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: AppBar(
        title: Text(
            'Practising_Cards'
        ),
      ),
      body: Column(
        children: <Widget>[
          Expanded(
            child: Row(
              children: [
                Expanded(
                  child: AllContainers(
                    onPress: (){
                        setState(() {
                          ageStatus=AgeStatus.child;
                        });
                    },
                    colors: ageStatus==AgeStatus.child?activeColor:
                    deactiveColor,
                    mycard:MyColumnItems(
                      FontAwesomeIcons.mars,'FEMALE'
                  ),
                  ),

                ),
                Expanded(
                  child: AllContainers(
                    colors: ageStatus==deactiveColor?activeColor:
                    deactiveColor,
                    onPress: (){
                      setState(() {
                        ageStatus=AgeStatus.old;
                      });
                    },
                    mycard:MyColumnItems(
                        FontAwesomeIcons.mars,'FEMALE'
                    ),
                  ),
                )
              ],
            ),

          ),
          Container(
            margin: EdgeInsets.only(top: 5),
            width: double.infinity,
            height: 50,
            color: Colors.red,
          ),
        ],
      ),
    );
  }

//这是容器类

import 'package:flutter/material.dart';
import 'NewMain.dart';
class AllContainers extends StatelessWidget {
  final Color colors;
  final Widget mycard;
  final Function onPress;



  AllContainers({required this.colors,required this.mycard, required this.onPress});

  Widget build(BuildContext context) {
    return GestureDetector(
        onTap: onPress(),
        child: Container(
          child: mycard,
          margin: EdgeInsets.all(10),
          decoration: BoxDecoration(
          color: colors,
          borderRadius: BorderRadius.circular(20),
        ),
      ),
    );
  }
}

我试着在State中创建一个带有setState的函数，并将该函数传递给我的onPress方法，但也不起作用