62 lines
2.4 KiB
Dart
62 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../auth_provider.dart';
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class LogoutScreen extends StatelessWidget {
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const LogoutScreen({super.key});
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@override
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Widget build(BuildContext context) {
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final auth = Provider.of<AuthProvider>(context, listen: false);
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// Use addPostFrameCallback to ensure the dialog is shown after the widget
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// has been built, preventing errors like "setState() called during build".
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WidgetsBinding.instance.addPostFrameCallback((_) {
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// Check if a dialog is already open to prevent multiple dialogs
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// This is a simple check, more robust solutions might involve a state variable
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// if this screen could be rebuilt frequently without navigation.
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if (Navigator.of(context).canPop() && ModalRoute.of(context)?.isCurrent == true) {
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showDialog(
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context: context,
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barrierDismissible: false, // User must choose an action (Cancel/Logout)
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builder: (dialogContext) => AlertDialog(
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title: const Text("Are you sure?"),
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content: const Text("Do you really want to log out?"),
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actions: [
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TextButton(
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onPressed: () {
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Navigator.pop(dialogContext); // Close dialog
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// Go back to the previous screen if user cancels logout
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Navigator.pop(context);
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},
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child: const Text("Cancel"),
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),
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ElevatedButton(
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onPressed: () {
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Navigator.pop(dialogContext); // Close dialog
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auth.logout();
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// Navigate to login screen and remove all routes below it
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Navigator.pushNamedAndRemoveUntil(context, '/', (route) => false);
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},
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.red[700],
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foregroundColor: Colors.white,
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),
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child: const Text("Logout"),
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),
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],
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),
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);
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}
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});
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// The LogoutScreen itself can be an empty Scaffold, as its primary
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// purpose is to trigger the dialog immediately upon navigation.
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return Scaffold(
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appBar: AppBar(title: const Text("Logout")),
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body: const Center(
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child: CircularProgressIndicator(), // Show a loading indicator briefly
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),
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);
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}
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} |