Get error msg- Function runApp not defined.
It used to work in Android Studio Dolphin using Flutter. Now I get this error
msg in Android Studio Electric Eel. See screenshot at the bottom of this pg.
void main() {
runApp(const App()); Would this solve the issue if I just void listed below if not how do I fix the problem.
void runApp(App app) {
}

Latest Android Studio version Electric Eel 2022.1 and flutter ver 3.7.1 .

Please download this food menu project from Github - . 

Using the Android Version listed above Electric Eel 2022.1 and flutter ver 3.7.1 are you able to get that flutter project to work? If you do can it you upload it to Github. Since that project consist of several separate pages to big to put it in here. Background it was working in an older version of Android Studio and previous flutter version. I'm hoping you can see the link because after submitting the question the link for Github would disappear when I review the question at least on my side.

Creating a food menu using Flutter version 3.3.8 inside Android Studio ver 2021.3.1.

If you can answer it can you please use the online flutter ide so I can see it better -

Thanks to everyone for there help on my previous question.

Using Flutter ver 3.3.8 and Android Studio Dolphin | 2021.3.1 Patch 1 (This is the latest version that i'm using. Since the book is using an older version.)

Modified the Widget with this code see below

Still having issues with this line of code -

if (inValue?.isEmpty) {
return "Please enter username";
}

Flutter shows this msg - A nullable expression can't be used as a condition. Try checking that the value isn't 'null' before using it as a condition. See screenshot of the message listed below. A;so put the full code below the screenshot.

import 'package:flutter/material.dart';

void main() {

runApp(const MyApp());

}



class MyApp extends StatefulWidget {

const MyApp({super.key});

@override

_MyApp createState() => _MyApp();

}


class LoginData {

String username = "";

String password = "";



}



class _MyApp extends State {



LoginData loginData = LoginData();

final GlobalKey<FormState> _formkey = GlobalKey<FormState>();



@override

Widget build(BuildContext inContext) {

return MaterialApp(home: Scaffold(

body : Container(

padding : const EdgeInsets.all(50.0),

child : Form(

key: _formkey,

child: Column(

children: [

TextFormField(

keyboardType: TextInputType.emailAddress,

validator: (String? inValue) {

if (inValue?.isEmpty) {
return "Please enter username";
}

return null;

},
onSaved: (String inValue) {
loginData.username = inValue;
},

decoration: const InputDecoration(
hintText: "[email protected]",
labelText: "Username (eMail address)"
),
),

TextFormField(

obscureText: true,

validator: (String inValue) {
if (inValue.length < 10) {
return "Password must be >=10 in length";
}
return null;
},

onSaved: (String inValue) {
this.loginData.password = inValue;
},

decoration: InputDecoration(
hintText : "Password",
labelText : "Password"
),
),

ElevatedButton(

child : Text("Log In!"),

onPressed: (){

if (_formkey.currentState.validate()){

_formkey.currentState.save();

print ("Username: ${_loginData.username}");

print ("Password: ${_loginData.password}");

}

},

),

]

),

),

),

));

}

}