View difference between Paste ID: X6tVezbs and tDqBysuf

 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:firebaser/student.dart';
 import 'package:flutter/material.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebaser/firebase_options.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await Firebase.initializeApp(
     options: DefaultFirebaseOptions.currentPlatform,
   );
 
   runApp(MaterialApp(
     theme: ThemeData(
       brightness: Brightness.light,
       primaryColor: Colors.blue,
       colorScheme: ColorScheme.fromSwatch().copyWith(secondary: Colors.cyan),
     ),
     home: MyApp(),
   ));
 }
 
 class MyApp extends StatefulWidget {
   const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();
 }
 
 class _MyAppState extends State<MyApp> {
   TextEditingController ct1 = new TextEditingController();
   TextEditingController ct2 = new TextEditingController();
   TextEditingController ct3 = new TextEditingController();
   TextEditingController ct4 = new TextEditingController();
   CollectionReference cref = FirebaseFirestore.instance.collection("Students");
 
   void enterData(TextEditingController ct1, TextEditingController ct2,
       TextEditingController ct3, TextEditingController ct4) {
     String n = ct1.text;
     String i = ct2.text;
     String c = ct3.text;
     double g = double.parse(ct4.text);
 
     Map<String, dynamic> map = {
       "Name": n,
       "ID": i,
       "Course": c,
       "GPA": g,
     };
 
     cref
         .add(map)
         .then((value) => print("User added"))
         .catchError((error) => print("Errrrrrrrrrr "));
   }
 
   void getData(String doc, TextEditingController ct1, TextEditingController ct2,
       TextEditingController ct3, TextEditingController ct4) {
     cref.doc(doc).get().then((value) {
       dynamic obj = value.data();
       print(obj["Name"]);
       print(obj["Course"]);
       print(obj["ID"]);
       print(obj["GPA"]);
     });
   }
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text("Airbase inc."),
       ),
       body: Column(
         children: <Widget>[
           Padding(
             padding: const EdgeInsets.all(8.0),
             child: TextFormField(
               controller: ct1,
               decoration: const InputDecoration(
                   labelText: "Student Name",
                   fillColor: Colors.white,
                   focusedBorder: OutlineInputBorder(
                       borderSide: BorderSide(color: Colors.blue, width: 2.0))),
               onChanged: (String str) {},
             ),
           ),
           Padding(
             padding: const EdgeInsets.all(8.0),
             child: TextFormField(
               controller: ct2,
               decoration: const InputDecoration(
                   labelText: "Student ID",
                   fillColor: Colors.white,
                   focusedBorder: OutlineInputBorder(
                       borderSide: BorderSide(color: Colors.blue, width: 2.0))),
               onChanged: (String str) {},
             ),
           ), //
           Padding(
             padding: const EdgeInsets.all(8.0),
             child: TextFormField(
               controller: ct3,
               decoration: const InputDecoration(
                   labelText: "Course",
                   fillColor: Colors.white,
                   focusedBorder: OutlineInputBorder(
                       borderSide: BorderSide(color: Colors.blue, width: 2.0))),
               onChanged: (String str) {},
             ),
           ),
           Padding(
             padding: const EdgeInsets.all(8.0),
             child: TextFormField(
               controller: ct4,
               decoration: const InputDecoration(
                   labelText: "GPA",
                   fillColor: Colors.white,
                   focusedBorder: OutlineInputBorder(
                       borderSide: BorderSide(color: Colors.blue, width: 2.0))),
               onChanged: (String str) {},
             ),
           ), //
           Row(
             mainAxisAlignment: MainAxisAlignment.center,
             children: <Widget>[
               ElevatedButton(
                 onPressed: () {
                   // enterData(ct1, ct2, ct3, ct4);
                   getData("cTohq82nNzzrmzc32KR7", ct1, ct2, ct3, ct4);
                 },
                 child: Icon(Icons.memory_sharp),
               )
             ],
           )
         ],
       ),
     );
   }
 }