import 'package:flutter/material.dart';
import 'package:bloc/bloc.dart';
import 'Classes.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';

enum MaleFem {
  Macho,
  Hembra
}
int mcol = 0;
int fcol = 0;
const barcol = 80.0;

const col = 0xFF1d1E33;
const inctiv = 0xFFFFFF;
void main() => runApp(BMICalculator());

class BMICalculator extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Calculadora del indice de masa corporal",
      debugShowCheckedModeBanner: false,
      theme: ThemeData.dark().copyWith(
        appBarTheme: AppBarTheme(
            backgroundColor: Color(0xff0a0e21),),
        scaffoldBackgroundColor: Color(0xff0a0e21),
       ),

      home: InputPage(),
    );
  }
}

class InputPage extends StatefulWidget {
  @override
  _InputPageState createState() => _InputPageState();
}

class _InputPageState extends State<InputPage> {

  void changecolor(int g,m) {
      g = g==1? col : inctiv;
      m = g;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Center(child: Text('Indice de Masa Corporal')),
      ),
      body: SafeArea(
        child: Column(
          children: <Widget> [
            Row(
              children: <Widget> [
                // Macho

                Expanded(child:
                  GestureDetector(
                      onTap: () {
                    setState(() {
                      changecolor(1,mcol);
                    });
                  },
                  child: MyCont(coloro: Color(mcol), ikono:IconandText(symbol: FontAwesomeIcons.mars, textu: 'Hombre'))),
                ),

                // Hembra

                  Expanded(child: GestureDetector(
                      onTap: () {
                    setState(() {
                      changecolor(1,fcol);
                    });
                  },
                      child: MyCont(coloro: Color(fcol), ikono:IconandText(symbol: FontAwesomeIcons.venus, textu: 'Mujer'))),
                  ),
            ],),

            Expanded(
              child: Row(
              children: <Widget> [
                MyCont(coloro: Color(col),)
              ]
              ),
            ),

            Expanded(
              child: Row(
                  children: <Widget> [
                    MyCont(coloro: Color(col)),
                    MyCont(coloro: Color(col))
                  ]   ),
            ),
            Container(
              color: Colors.pinkAccent,
              margin: EdgeInsets.only(top: 10),
              width: double.infinity,
              height: barcol,
            ),
            ],
        ),
    ));
  }
}

小部件库捕获到异常
应用父数据时引发了以下Assert：
ParentDataWidget的使用不正确。
ParentDataWidget Expanded（flex：1）希望将FlexParentData类型的ParentData应用于RenderObject，该RenderObject已设置为接受不兼容的ParentData类型的ParentData。
有谁能解释一下哪个是扩展的，哪个是不正确的？
附言：
是的，我知道布尔逻辑有一些错误，因为按钮的颜色男性和女性没有改变。