diff --git a/lib/api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart b/lib/api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart
index b2f93c6..ea00d01 100644
--- a/lib/api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart
+++ b/lib/api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart
@@ -1,6 +1,4 @@
 import 'dart:convert';
-import 'dart:developer';
-
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFiles.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFilesParams.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFilesResponse.dart';
@@ -11,21 +9,17 @@ class ListFilesCache extends RequestCache<ListFilesResponse> {
 
   ListFilesCache({required onUpdate, required this.path}) : super(RequestCache.cacheNothing, onUpdate) {
     String cacheName = path.replaceAll(RegExp("[^A-Za-z0-9]"), "_"); //TODO this is very evil, "/ü/" > "___" also "/ä/" > "___"
-    log(cacheName);
-
     start("MarianumMobile", "wd-folder-$cacheName");
   }
 
   @override
   Future<ListFilesResponse> onLoad() async {
-    log("Loading remote data");
     ListFilesResponse data = await ListFiles(ListFilesParams(path)).run();
     return data;
   }
 
   @override
   ListFilesResponse onLocalData(String json) {
-    log("Loading local data");
     return ListFilesResponse.fromJson(jsonDecode(json));
   }
 
diff --git a/lib/api/webuntis/webuntisApi.dart b/lib/api/webuntis/webuntisApi.dart
index c5e435c..731beb0 100644
--- a/lib/api/webuntis/webuntisApi.dart
+++ b/lib/api/webuntis/webuntisApi.dart
@@ -1,5 +1,4 @@
 import 'dart:convert';
-import 'dart:developer';
 import 'package:marianum_mobile/api/apiRequest.dart';
 import 'package:http/http.dart' as http;
 import 'package:marianum_mobile/api/webuntis/webuntisError.dart';
@@ -53,7 +52,6 @@ abstract class WebuntisApi extends ApiRequest {
   }
 
   Future<http.Response> post(String data, Map<String, String>? headers) async {
-    log("POST: $endpoint\n$data");
     return await http
         .post(endpoint, body: data, headers: headers)
         .timeout(
diff --git a/lib/app.dart b/lib/app.dart
index 8aa19d5..3333d24 100644
--- a/lib/app.dart
+++ b/lib/app.dart
@@ -19,6 +19,25 @@ class App extends StatefulWidget {
 
 class _AppState extends State<App> {
   int currentPage = 0;
+  late AppBar _appBar;
+
+  void setAppBar(BuildContext context, AppBar? appBar) {
+    setState(() {
+      _appBar = appBar ?? AppBar(
+        title: const Text("Marianum Fulda"),
+        actions: <Widget>[
+          IconButton(
+            padding: const EdgeInsets.only(right: 15),
+            icon: const Icon(Icons.settings),
+            onPressed: () {
+              Navigator.push(context, MaterialPageRoute(builder: (context) => const Settings()));
+            },
+          )
+        ],
+      );
+    });
+    setState(() {});
+  }
 
   @override
   void initState() {
@@ -33,6 +52,8 @@ class _AppState extends State<App> {
       Provider.of<ChatListProps>(context, listen: false).run();
     });
 
+    setAppBar(context, null);
+
     super.initState();
   }
 
@@ -41,18 +62,7 @@ class _AppState extends State<App> {
     final PageController pageController = PageController();
     return Scaffold(
       resizeToAvoidBottomInset: false,
-      appBar: AppBar(
-        title: const Text("Marianum Fulda"),
-        actions: <Widget>[
-          IconButton(
-            padding: const EdgeInsets.only(right: 15),
-            icon: const Icon(Icons.settings),
-            onPressed: () {
-              Navigator.push(context, MaterialPageRoute(builder: (context) => const Settings()));
-            },
-          )
-        ],
-      ),
+      appBar: _appBar,
       body: Column(
         children: [
           Visibility(
@@ -66,11 +76,11 @@ class _AppState extends State<App> {
           Flexible(
             child: PageView(
               controller: pageController,
-              children: const [
-                Timetable(),
-                ChatList(),
-                Files(),
-                Overhang(),
+              children: [
+                const Timetable(),
+                const ChatList(),
+                Files(setAppBar),
+                const Overhang(),
               ],
               onPageChanged: (page) {
                 setState(() {
@@ -132,6 +142,7 @@ class _AppState extends State<App> {
 
         currentIndex: currentPage,
         onTap: (item) {
+          setAppBar(context, null);
           setState(() {
             currentPage = item;
             pageController.jumpToPage(item);
diff --git a/lib/data/files/filesProps.dart b/lib/data/files/filesProps.dart
index ec0e577..eb6f0cd 100644
--- a/lib/data/files/filesProps.dart
+++ b/lib/data/files/filesProps.dart
@@ -1,12 +1,18 @@
-import 'dart:developer';
-
 import 'package:marianum_mobile/api/apiResponse.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFilesResponse.dart';
 import 'package:marianum_mobile/data/dataHolder.dart';
 
+extension ExtendedList on List {
+  T indexOrNull<T>(int index) =>  index +1 <= length ? this[index] : null;
+  T firstOrNull<T>() => isEmpty ? null : first;
+  T lastOrNull<T>() => isEmpty ? null : last;
+}
+
 class FilesProps extends DataHolder {
-  String _path = "/";
+  List<String> folderPath = List<String>.empty(growable: true);
+  String currentFolderName = "Home";
+  String? backPath;
 
   ListFilesResponse? _listFilesResponse;
   ListFilesResponse get listFilesResponse => _listFilesResponse!;
@@ -18,21 +24,26 @@ class FilesProps extends DataHolder {
 
   @override
   void run() {
+    _listFilesResponse = null;
     notifyListeners();
     ListFilesCache(
-      path: _path,
+      path: folderPath.isEmpty ? "/" : folderPath.join("/"),
       onUpdate: (ListFilesResponse data) => {
-        log("Got cache response"),
         _listFilesResponse = data,
         notifyListeners(),
       }
     );
   }
 
-  void setPath(String path) {
-    _listFilesResponse = null;
-    _path = path;
+  void enterFolder(String name) {
+    folderPath.add(name);
+    currentFolderName = name;
     run();
   }
 
+  void popFolder() {
+    folderPath.removeLast();
+    if(folderPath.isEmpty) currentFolderName = "Home";
+    run();
+  }
 }
\ No newline at end of file
diff --git a/lib/screen/pages/files/files.dart b/lib/screen/pages/files/files.dart
index 87a3e83..86fd567 100644
--- a/lib/screen/pages/files/files.dart
+++ b/lib/screen/pages/files/files.dart
@@ -1,19 +1,15 @@
-
-import 'dart:developer';
-
 import 'package:filesize/filesize.dart';
 import 'package:flutter/material.dart';
 import 'package:jiffy/jiffy.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/cacheableFile.dart';
-import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/listFilesParams.dart';
+import 'package:marianum_mobile/widget/errorView.dart';
 import 'package:provider/provider.dart';
 
-import '../../../api/marianumcloud/webdav/queries/listFiles/listFiles.dart';
-import '../../../api/marianumcloud/webdav/queries/listFiles/listFilesResponse.dart';
 import '../../../data/files/filesProps.dart';
 
 class Files extends StatefulWidget {
-  const Files({Key? key}) : super(key: key);
+  Function appBar;
+  Files(this.appBar, {Key? key}) : super(key: key);
 
   @override
   State<Files> createState() => _FilesState();
@@ -23,23 +19,37 @@ class _FilesState extends State<Files> {
 
   @override
   void initState() {
+    super.initState();
+
     WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
       Provider.of<FilesProps>(context, listen: false).run();
     });
+  }
 
-    super.initState();
-
+  void updateAppBar(FilesProps props) {
+    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
+      widget.appBar(context, AppBar(
+        leading: BackButton(
+          onPressed: () {
+            updateAppBar(props);
+            props.popFolder();
+          },
+        ),
+        title: Text(props.currentFolderName),
+      ));
+    });
   }
 
   @override
   Widget build(BuildContext context) {
-    Future<ListFilesResponse> files = ListFiles(ListFilesParams("/")).run();
-    files.then((value) => log(value.toJson().toString()));
-
     return Consumer<FilesProps>(
       builder: (context, value, child) {
         if(value.primaryLoading()) return const Center(child: CircularProgressIndicator());
 
+        if(value.listFilesResponse.files.isEmpty) {
+          return const ErrorView(text: "Der Ordner ist leer", icon: Icons.folder_off_outlined);
+        }
+
         return ListView.builder(
           itemCount: value.listFilesResponse.files.length,
           itemBuilder: (context, index) {
@@ -50,61 +60,43 @@ class _FilesState extends State<Files> {
               subtitle: file.isDirectory ? Text("geändert ${Jiffy(file.modifiedAt).fromNow()}") : Text("${filesize(file.size)}, ${Jiffy(file.modifiedAt).fromNow()}}"),
               trailing: Icon(file.isDirectory ? Icons.arrow_right : Icons.open_in_new),
               onTap: () {
+                FilesProps props = Provider.of<FilesProps>(context, listen: false);
+                updateAppBar(props);
                 if(file.isDirectory) {
-                  Provider.of<FilesProps>(context, listen: false).setPath(file.path);
+                  props.enterFolder(file.name);
+                } else {
+                  //TODO implement file download / view
+                  showDialog(context: context, builder: (context) {
+                    return const AlertDialog(
+                      title: Text("Datei öffnen"),
+                      content: Text("Das öffnen von Dateien ist noch nicht implementiert!"),
+                    );
+                  });
                 }
               },
+              onLongPress: () {
+                showModalBottomSheet<void>(
+                  context: context,
+                  builder: (context) {
+                    return ListView(
+                      children: [
+                        ListTile(
+                          leading: const Icon(Icons.delete),
+                          title: Text("'${file.name}' Löschen"),
+                        ),
+                        const ListTile(
+                          leading: Icon(Icons.share),
+                          title: Text("Teilen"),
+                        )
+                      ],
+                    );
+                  },
+                );
+              },
             );
           },
         );
       }
     );
-
-  //   return Consumer<FilesProps>(
-  //     builder: (context, data, child) {
-  //
-  //       if(data.primaryLoading()) {
-  //         return const Center(child: CircularProgressIndicator());
-  //       }
-  //
-  //       List<ListTile> entries = List<ListTile>.empty(growable: true);
-  //
-  //       data.listFilesResponse.files.forEach((element) {
-  //         entries.add(ListTile(
-  //           title: Text(element.name ?? "?"),
-  //           leading: Icon(element.isDir ?? false ? Icons.folder : Icons.file_copy_outlined),
-  //           onTap: () {
-  //             if(element.isDir ?? false) {
-  //               // TODO: Open Folder
-  //             } else {
-  //               // TODO: Open an File
-  //             }
-  //           },
-  //
-  //           onLongPress: () {
-  //             showModalBottomSheet<void>(
-  //               context: context,
-  //               builder: (context) {
-  //                 return ListView(
-  //                   children: [
-  //                     ListTile(
-  //                       leading: const Icon(Icons.delete),
-  //                       title: Text("'${element.name?.replaceRange(20, element.name?.length, " ...")}' Löschen"),
-  //                     ),
-  //                     const ListTile(
-  //                       leading: Icon(Icons.share),
-  //                       title: Text("Teilen"),
-  //                     )
-  //                   ],
-  //                 );
-  //               },
-  //             );
-  //           },
-  //         ));
-  //       });
-  //
-  //       return ListView(children: entries);
-  //     },
-  //   );
   }
 }
diff --git a/lib/widget/offlineError.dart b/lib/widget/errorView.dart
similarity index 78%
rename from lib/widget/offlineError.dart
rename to lib/widget/errorView.dart
index a21e61a..4a04f3a 100644
--- a/lib/widget/offlineError.dart
+++ b/lib/widget/errorView.dart
@@ -1,9 +1,9 @@
 import 'package:flutter/material.dart';
 
-class OfflineBanner extends StatelessWidget {
+class ErrorView extends StatelessWidget {
   final IconData icon;
   final String text;
-  const OfflineBanner({Key? key, this.icon = Icons.report_gmailerrorred, this.text = "Es ist ein Fehler aufgetreten!"}) : super(key: key);
+  const ErrorView({Key? key, this.icon = Icons.report_gmailerrorred, this.text = "Es ist ein Fehler aufgetreten!"}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {