Flutter: Gridview not updating with expected values - flutter

Question

My app should pick a directory and list the files of the directory in cards.
Right now it does that but it has a little inconvenience, it lists the files from the "previous" directory.
For example, if the first picked dir is D:\AM it would list the files at the default path location (in my code an empty String), but if I press the button again and choose a different directory like D:\AM\test (expecting a single text file) it would list the files of D:\AM. I change the app title to match the picked directory at the button press but as you can see it lists the files from another directory (previous picked directory D:\AM).
What I get:
What I should get from the start (got this after picking the D:\AM\test dir again):
My code:
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'dart:io';
class Demo3 extends StatefulWidget {
const Demo3({Key? key}) : super(key: key);
#override
_Demo3State createState() => _Demo3State();
}
class _Demo3State extends State<Demo3> {
late String path = '';
var files = [];
void selectDir() async {
String? selectedDirectory = await FilePicker.platform.getDirectoryPath();
if (selectedDirectory == null) {
setState(() {
path = "";
});
}
else{
setState(() {
path = selectedDirectory;
});
}
print(path);
}
void listFiles(String paths) async {
var dir = Directory(paths);
List<FileSystemEntity> entities = await dir.list().toList();
setState(() {
files = entities;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('$path'),
actions: [
IconButton(
onPressed: () {
selectDir();
listFiles(path);
},
icon: const Icon(Icons.browse_gallery),
),
]
),
body: GridView.builder(
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 3
),
itemCount: files.length,
itemBuilder:(BuildContext context, int index){
var test = files[index];
return Card(
child: Text('$test'),
);
}
)
);
}
}
Any help is appreciated, thanks!

Answer 1

try this, just replaced listFiles() inside selectDir rather than in button tap.
void selectDir() async {
String? selectedDirectory = await FilePicker.platform.getDirectoryPath();
print(selectedDirectory);
if (selectedDirectory == null) {
setState(() {
path = "";
});
} else {
setState(() {
path = selectedDirectory;
listFiles(path);
});
}
print(path);
}