first aut

android/build.gradle

@@ -29,6 +29,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }

lib/AddPage.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 import 'dart:math';
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_storage/firebase_storage.dart';
 import 'package:flutter/material.dart';
 import 'package:image_picker/image_picker.dart';
@@ -10,7 +11,7 @@ import 'package:image/image.dart' as img;
 class AddScreen extends StatefulWidget {
   final int initialIndex;
 
-  const AddScreen({super.key, required this.initialIndex});
+  const AddScreen({Key? key, required this.initialIndex}) : super(key: key);
   @override
   _AddScreenState createState() => _AddScreenState();
 
@@ -71,18 +72,22 @@ class _AddScreenState extends State<AddScreen> {
         if (originalImage != null) {
           if (originalImage.width == originalImage.height) {
             // Wenn das Bild bereits im 1:1-Format ist, überspringen Sie das Zuschneiden
-            setState(() {
+            if(mounted) {
-              _imageFile = tempFile;
+              setState(() {
-              print("1:1");
+                _imageFile = tempFile;
-            });
+                print("1:1");
+              });
+            }
 
           } else {
             // Wenn das Bild nicht im 1:1-Format ist, schneiden Sie es zu
             File croppedFile = await _cropImage(tempFile);
-            setState(() {
+            if(mounted) {
-              _imageFile = croppedFile;
+              setState(() {
-            });
+                _imageFile = croppedFile;
-            print("decode");
+              });
+              print("decode");
+            }
           }
         } else {
           throw Exception('Unable to decode image file.');
@@ -108,23 +113,23 @@ class _AddScreenState extends State<AddScreen> {
     }
 
     String imageUrl = await uploadImageToFirebaseStorage(imageFile, collectionName);
-    try
+    String? userId = FirebaseAuth.instance.currentUser?.uid;  // get the user ID
-    {
+
+    try {
       await FirebaseFirestore.instance.collection(collectionName).add({
         "title": title,
         "description": description,
         "imageUrl": imageUrl,
         "createdDate": DateTime.now(),
+        "userId": userId,  // add the user ID to the document
       });
       onComplete(true);
-    }
+    } catch(e) {
-    catch(e)
-    {
       onComplete(false);
     }
-
   }
 
+
   Future<String> uploadImageToFirebaseStorage(File imageFile, String collectionName) async {
     Reference ref = FirebaseStorage.instance.ref().child("$collectionName/${DateTime.now().toString()}");
     UploadTask uploadTask = ref.putFile(imageFile);
@@ -172,14 +177,16 @@ class _AddScreenState extends State<AddScreen> {
                   });
                   Navigator.pop(context); // Fenster direkt schließen, nachdem der Upload-Button gedrückt wurde.
                   await addNewElementToFirestore(_titleController.text, _descriptionController.text, _imageFile!, onComplete: (bool success) {
-                    setState(() {
+                    if(mounted) {
-                      _uploading = false;
+                      setState(() {
-                    });
+                        _uploading = false;
-                    ScaffoldMessenger.of(context).showSnackBar(
+                      });
-                      SnackBar(
+                      ScaffoldMessenger.of(context).showSnackBar(
-                        content: Text(success ? 'Upload erfolgreich.' : 'Upload fehlgeschlagen.'),
+                        SnackBar(
-                      ),
+                          content: Text(success ? 'Upload erfolgreich.' : 'Upload fehlgeschlagen.'),
-                    );
+                        ),
+                      );
+                    }
                   });
                 }
               },

lib/UserDefinedList.dart

@@ -1,9 +1,11 @@
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_storage/firebase_storage.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:printing/printing.dart';
+import 'package:provider/provider.dart';
 import 'AddPage.dart';
 import 'DetailPage.dart';
 import 'package:intl/intl.dart';
@@ -11,6 +13,8 @@ import 'package:pdf/widgets.dart' as pdfWidgets;
 import 'package:http/http.dart' as http;
 import 'package:image/image.dart' as img;
 
+import 'anonym_aut.dart';
+
 class UserDefinedItem extends StatelessWidget {
   final String title;
   final String datum;
@@ -208,23 +212,59 @@ class _GenericListState extends State<GenericList> {
                       final DateTime createdDate = data['createdDate'].toDate();
                       final formattedDate =
                       DateFormat('dd.MM.yyyy').format(createdDate);
-                      return Dismissible(
+                      final currentUser = FirebaseAuth.instance.currentUser;
-                        key: UniqueKey(),
+
-                        direction: DismissDirection.endToStart,
+                      if (currentUser != null && data['userId'] == currentUser.uid) {
-                        onDismissed: (direction) {
+                        return Dismissible(
-                          _deleteDocument(documentId, data['imageUrl']);
+                          key: UniqueKey(),
-                        },
+                          direction: DismissDirection.endToStart,
-                        background: Container(
+                          onDismissed: (direction) {
-                          color: Colors.red,
+                            _deleteDocument(documentId, data['imageUrl']);
-                          child: const Align(
+                          },
-                            alignment: Alignment.centerRight,
+                          background: Container(
-                            child: Padding(
+                            color: Colors.red,
-                              padding: EdgeInsets.only(right: 16),
+                            child: const Align(
-                              child: Icon(Icons.delete, color: Colors.white),
+                              alignment: Alignment.centerRight,
+                              child: Padding(
+                                padding: EdgeInsets.only(right: 16),
+                                child: Icon(Icons.delete, color: Colors.white),
+                              ),
                             ),
                           ),
-                        ),
+                          child: UserDefinedItem(
-                        child: UserDefinedItem(
+                            title: data['title'] ?? '',
+                            datum: formattedDate,
+                            description: data['description'] ?? '',
+                            imageUrl: data['imageUrl'] ?? '',
+                            isSelected: selectedItems.containsKey(documentId),
+                            onTap: () {
+                              clearSelectedItems();
+                              // Open a new screen when the user taps on the list item
+                              Navigator.push(
+                                context,
+                                MaterialPageRoute(
+                                  builder: (context) => DetailPage(
+                                    title: data['title'],
+                                    datum: formattedDate,
+                                    description: data['description'],
+                                    imageUrl: data['imageUrl'],
+                                  ),
+                                ),
+                              );
+                            },
+                            onLongPress: () {
+                              setState(() {
+                                if (selectedItems.containsKey(documentId)) {
+                                  selectedItems.remove(documentId);
+                                } else {
+                                  selectedItems[documentId] = data;
+                                }
+                              });
+                            },
+                          ),
+                        );
+                      } else {
+                        return UserDefinedItem(
                           title: data['title'] ?? '',
                           datum: formattedDate,
                           description: data['description'] ?? '',
@@ -254,8 +294,9 @@ class _GenericListState extends State<GenericList> {
                               }
                             });
                           },
-                        ),
+                        );
-                      );
+                      }
+
                     },
                   );
               }
@@ -295,17 +336,26 @@ class _GenericListState extends State<GenericList> {
         ],
 
       ),
-      floatingActionButton: FloatingActionButton(
+      floatingActionButton: Consumer<AuthState>(
-        onPressed: () {
+        builder: (context, authState, child) {
-          clearSelectedItems();
+          if (authState.isSignedIn) {
-          Navigator.push(
+            return FloatingActionButton(
-            context,
+              onPressed: () {
-            MaterialPageRoute(builder: (context) => AddScreen(initialIndex: widget.selectedIndex)),
+                clearSelectedItems();
-          );
+                Navigator.push(
+                  context,
+                  MaterialPageRoute(builder: (context) => AddScreen(initialIndex: widget.selectedIndex)),
+                );
+              },
+              tooltip: "Neues Element hinzufügen",
+              child: const Icon(Icons.add),
+            );
+          } else {
+            return Container();  // Return an empty container when the user is not signed in
+          }
         },
-        tooltip: "Neues Element hinzufügen",
-        child: const Icon(Icons.add),
       ),
+
     );
   }
 

lib/anonym_aut.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:provider/provider.dart';
+
+class AuthState extends ChangeNotifier {
+  FirebaseAuth auth = FirebaseAuth.instance;
+  bool _isSignedIn = false;
+
+  bool get isSignedIn => _isSignedIn;
+
+  Future<void> signInAnonymously() async {
+    try {
+      await auth.signInAnonymously();
+      _isSignedIn = true;
+      notifyListeners();
+    } catch (e) {
+      print(e);
+    }
+  }
+
+  Future<void> signOut() async {
+    await auth.signOut();
+    _isSignedIn = false;
+    notifyListeners();
+  }
+}
+class AnonymAuthScreen extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: Consumer<AuthState>(
+          builder: (context, authState, child) {
+            return ElevatedButton(
+              onPressed: authState.isSignedIn
+                  ? authState.signOut
+                  : authState.signInAnonymously,
+              child: Text(authState.isSignedIn ? 'Abmelden' : 'Anonym anmelden'),
+            );
+          },
+        ),
+      ),
+    );
+  }
+}

lib/home.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:oggauergemeindetrommler/LoginPage.dart';
 import 'UserDefinedList.dart';
+import 'anonym_aut.dart';
 
 class MyHomePage extends StatefulWidget {
   const MyHomePage({Key? key, required this.title});
@@ -23,7 +24,7 @@ class _MyHomePageState extends State<MyHomePage> {
       const GenericList(collectionName: 'CitizensForum', selectedIndex: 0,),
       const GenericList(collectionName: 'News', selectedIndex: 1,),
       const GenericList(collectionName: 'Issues', selectedIndex: 2,),
-      LoginPage()
+      AnonymAuthScreen()
     ];
 
     return Scaffold(

lib/main.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'anonym_aut.dart';
 import 'home.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'firebase_options.dart';
@@ -8,10 +10,15 @@ void main() async {
   await Firebase.initializeApp(
     options: DefaultFirebaseOptions.currentPlatform,
   );
-  runApp(const MyApp());
+  runApp(
-
+    ChangeNotifierProvider(
+      create: (context) => AuthState(),
+      child: const MyApp(),
+    ),
+  );
 }
 
+
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 

pubspec.lock

@@ -21,10 +21,10 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: bfe67ef28df125b7dddcea62755991f807aa39a2492a23e1550161692950bbe0
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
       url: "https://pub.dev"
     source: hosted
-    version: "2.10.0"
+    version: "2.11.0"
   barcode:
     dependency: transitive
     description:
@@ -85,10 +85,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: e6a326c8af69605aec75ed6c187d06b349707a27fbff8222ca9cc2cff167975c
+      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.1"
+    version: "1.3.0"
   clock:
     dependency: transitive
     description:
@@ -125,10 +125,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: cfc915e6923fe5ce6e153b0723c753045de46de1b4d63771530504004a45fae0
+      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.0"
+    version: "1.17.1"
   convert:
     dependency: transitive
     description:
@@ -404,10 +404,10 @@ packages:
     dependency: transitive
     description:
       name: js
-      sha256: "5528c2f391ededb7775ec1daa69e65a2d61276f7552de2b5f7b8d34ee9fd4ab7"
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.5"
+    version: "0.6.7"
   lints:
     dependency: transitive
     description:
@@ -428,10 +428,10 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: "16db949ceee371e9b99d22f88fa3a73c4e59fd0afed0bd25fc336eb76c198b72"
+      sha256: "6501fbd55da300384b768785b83e5ce66991266cec21af89ab9ae7f5ce1c4cbb"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.13"
+    version: "0.12.15"
   material_color_utilities:
     dependency: transitive
     description:
@@ -444,10 +444,18 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: "6c268b42ed578a53088d834796959e4a1814b5e9e164f147f580a386e5decf42"
+      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.0"
+    version: "1.9.1"
+  nested:
+    dependency: transitive
+    description:
+      name: nested
+      sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
   octo_image:
     dependency: transitive
     description:
@@ -460,10 +468,10 @@ packages:
     dependency: transitive
     description:
       name: path
-      sha256: db9d4f58c908a4ba5953fcee2ae317c94889433e5024c27ce74a37f94267945b
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.2"
+    version: "1.8.3"
   path_parsing:
     dependency: transitive
     description:
@@ -532,10 +540,10 @@ packages:
     dependency: transitive
     description:
       name: pdf_widget_wrapper
-      sha256: "754867bf32c4683da29ccc6bf31250905431fb0818a7258c153e21cd627b3212"
+      sha256: e9d31fd7782ce28ae346b127ea7d1cd748d799bddee379f31191693610e23749
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0"
+    version: "1.0.1"
   pedantic:
     dependency: transitive
     description:
@@ -592,6 +600,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.2.4"
+  provider:
+    dependency: "direct main"
+    description:
+      name: provider
+      sha256: cdbe7530b12ecd9eb455bdaa2fcb8d4dad22e80b8afb4798b41479d5ce26847f
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.5"
   qr:
     dependency: transitive
     description:
@@ -681,10 +697,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: ad540f65f92caa91bf21dfc8ffb8c589d6e4dc0c2267818b4cc2792857706206
+      sha256: eb6ac1540b26de412b3403a163d919ba86f6a973fe6cc50ae3541b80092fdcfb
       url: "https://pub.dev"
     source: hosted
-    version: "0.4.16"
+    version: "0.5.1"
   typed_data:
     dependency: transitive
     description:
@@ -734,5 +750,5 @@ packages:
     source: hosted
     version: "6.2.2"
 sdks:
-  dart: ">=2.19.0 <3.0.0"
+  dart: ">=3.0.0-0 <4.0.0"
-  flutter: ">=3.7.0"
+  flutter: ">=3.9.0"

pubspec.yaml

@@ -51,6 +51,7 @@ dependencies:
   printing: ^5.10.4
   image_cropper: ^3.0.3
   logging: ^1.1.1
+  provider: ^6.0.5
 
 
 dev_dependencies: