在 Android Studio 中未触发 Flutter setState

Question

I'm absolutely new to programming and Flutter as well, so sorry for my silly question but I can't find in Google the reason why when I'm starting to type setState in Android studio it isn't popped up (from code helper) and I'm forced to remember the right spelling for this method.

Hope you can help me because I really can't understand how to fix it.

Thanks in advance for any comments.

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

class _InputPageState extends State<InputPage> {
  late Gender selectedGender;
  int height = 180;
  int weight = 60;
  int age = 19;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('BMI CALCULATOR'),
      ),
      body: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: <Widget>[
          Expanded(
            child: Row(
              children: <Widget>[
                Expanded(
                  child: ReusableCard(
                    onPress: () {
                      setState(() {
                        selectedGender = Gender.male;
                      });
                    },
                    colour: selectedGender == Gender.male
                        ? kActiveCardColour
                        : kInactiveCardColour,
                    cardChild: IconContent(
                      icon: FontAwesomeIcons.mars,
                      label: 'MALE',
                    ),
                  ),
                ),

Answer 1

label: selectedGender == Gender.male?'MALE':"FEMALE",

You added male directly. Please make it display based on selectedGender.

Answer 2

It also happens to me, but apparently it is a change in the version of Android Studio (if you are working with Android Studio), personally I have not wanted to rollback because it is a lot of work, but in a few weeks it has not been corrected by means of some update or something like that I think it will be time to do it

By the way, neither setState nor initState nor several other methods work

My current version of Android Studio is as follows