Please help fix my dart$/$flutter app. it is supposed to look just like the picture. I keep getting an error for downloading the uri shared prefernces. The code is provided below please edit it to get it to look like the pictures. Thank you so much. import 'package:flutter$/$material$.$dart';

import 'dart:math';

import 'package:shared$\_$preferences$/$shared$\_$preferences.dart';

void main$()\{$

runApp$($MyApp$())$;

$\}$

class MyApp extends StatelessWidget $\{$

@override

Widget build$($BuildContext context$)\{$

return MaterialApp$($

title: 'Random Student Picker',

theme: ThemeData$($

primarySwatch: Colors.blue,

$),$

home: RandomStudentPicker$(),$

$)$;

$\}$

$\}$

class RandomStudentPicker extends StatefulWidget $\{$

@override

$\_$RandomStudentPickerState createState$()=>\_$RandomStudentPickerState$()$;

$\}$

class $\_$RandomStudentPickerState extends State $\{$

final List students $=[]$;

final List hiddenStudents $=[]$;

String selectedStudent $=\text{'}\text{'}$;

@override

void initState$()\{$

super.initState$()$;

$\_$loadStudents$()$;

$\}$

Future $\_$loadStudents$()$ async $\{$

SharedPreferences prefs $=$ await SharedPreferences.getInstance$()$;

setState$(()\{$

students.addAll$($prefs$.$getStringList$(\text{'}$students$\text{'})??[])$;

hiddenStudents.addAll$($prefs$.$getStringList$(\text{'}$hiddenStudents$\text{'})??[])$;

$\})$;

$\}$

Future $\_$saveStudents$()$ async $\{$

SharedPreferences prefs $=$ await SharedPreferences.getInstance$()$;

await prefs.setStringList$(\text{'}$students$\text{'},$ students$)$;

await prefs.setStringList$(\text{'}$hiddenStudents$\text{'},$ hiddenStudents$)$;

$\}$

void pickRandomStudent$()\{$

setState$(()\{$

final List visibleStudents $=$

students.where$(($student$)=>!$hiddenStudents.contains$($student$)).$toList$()$;

if $($visibleStudents$.$isNotEmpty$)\{$

final Random random $=$ Random$()$;

selectedStudent $=$ visibleStudents$[$random$.$nextInt$($visibleStudents$.$length$)]$;

print$(\text{'}$Selected Student: $selectedStudent'$)$;

$\}$ else $\{$

print$(\text{'}$No visible students available'$)$;

$\}$

$\})$;

$\}$

void toggleVisibility$($String student$)\{$

setState$(()\{$

if $($hiddenStudents$.$contains$($student$))\{$

hiddenStudents.remove$($student$)$;

$\}$ else $\{$

hiddenStudents.add$($student$)$;

$\}$

$\_$saveStudents$()$;

$\})$;

$\}$

void addName$($String name$)\{$

setState$(()\{$

students.add$($name$)$;

$\_$saveStudents$()$;

$\})$;

$\}$

void deleteStudent$($String student$)\{$

setState$(()\{$

students.remove$($student$)$;

hiddenStudents.remove$($student$)$; $//$ Remove from hidden list as well

$\_$saveStudents$()$;

$\})$;

$\}$

@override

Widget build$($BuildContext context$)\{$

return Scaffold$($

appBar: AppBar$($

title: Text$(\text{'}$Random Student Picker'$),$

actions: $[$

IconButton$($

icon: Icon$($Icons$.$settings$),$

onPressed: $()\{$

ScaffoldMessenger.of$($context$).$showSnackBar$($

SnackBar$($

content: Text$(\text{'}$Settings will be coming soon'$),$

$),$

$)$;

$\},$

$),$

IconButton$($

icon: Icon$($Icons$.$info$),$

onPressed: $()\{$

$//$ Navigate to about screen

Navigator.push$($

context,

MaterialPageRoute$($builder: $($context$)=>$ AboutScreen$()),$

$)$;

$\},$

$),$

$],$

$),$

body: ListView.builder$($

itemCount: students.length,

itemBuilder: $($context$,$ index$)\{$

final student $=$ students$[$index$]$;

return Dismissible$($

key: Key$($student$),$

onDismissed: $($direction$)\{$

deleteStudent$($student$)$;

$\},$

background: Container$($

color: Colors.red,

child: Icon$($Icons$.$delete$),$

alignment: Alignment.centerRight,

$),$

child: ListTile$($

title: Text$($student$),$

onTap: $()\{$

toggleVisibility$($student$)$;

$\},$

leading: hiddenStudents.contains$($student$)$

$?$ Icon$($Icons$.$visibility$\_$off$)$

: null,

$),$

$)$;

$\},$

$),$

floatingActionButton: FloatingActionButton$($

onPressed: pickRandomStudent,

tooltip: 'Pick Random Student',

child: Icon$($Icons$.$sync$),$

$),$

$)$;

$\}$

$\}$

class AboutScreen extends StatelessWidget $\{$

@override

Widget build$($BuildContext context$)\{$

return Scaffold$($

appBar: AppBar$($

title: Text$(\text{'}$About$\text{'}),$

$),$

body: Center$($

child: Column$($

mainAxisAlignment: MainAxisAlignment.center,

children: $[$

Text$($

'CSCI $4350\text{'},$

style: TextStyle$($fontSize: $24),$

$),$

Image.asset$($

'assets$/$images$/$piedmont$-$college$-$banner.jpg$\text{'},$

width: $200,$

height: $200,$

$),$

Text$($