Ref: Passt Linter-Rules an

analysis_options.yaml

@@ -24,7 +24,6 @@ linter:
     - always_declare_return_types
     - always_put_control_body_on_new_line
     - always_put_required_named_parameters_first
-    - always_specify_types
     - annotate_overrides
     - annotate_redeclares
     - avoid_annotating_with_dynamic
@@ -123,6 +122,7 @@ linter:
     - noop_primitive_operations
     - null_check_on_nullable_type_parameter
     - null_closures
+    - omit_obvious_local_variable_types
     - one_member_abstracts
     - only_throw_errors
     - overridden_fields

lib/Pages/Dashboard/dashboard.dart

@@ -14,10 +14,10 @@ class Dashboard extends StatelessWidget {
   /// [context] ist der Build-Kontext
   @override
   Widget build(final BuildContext context) {
-    const double currentBalance = 4820.75;
+    const currentBalance = 4820.75;
     const double previousMonthBalance = 4300;
 
-    final Map<String, double> monthlyBalance = <String, double>{
+    final monthlyBalance = <String, double>{
       'Jan': 1200.0,
       'Feb': 900.0,
       'Mär': 1100.0,
@@ -26,7 +26,7 @@ class Dashboard extends StatelessWidget {
       'Jun': 1050.0,
     };
 
-    final List<Map<String, Object>> recentTransactions = <Map<String, Object>>[
+    final recentTransactions = <Map<String, Object>>[
       <String, Object>{'name': 'Supermarkt', 'amount': -45.50},
       <String, Object>{'name': 'Gehalt', 'amount': 2500.00},
       <String, Object>{'name': 'Miete', 'amount': -900.00},

lib/Pages/Settings/settings.dart

@@ -15,7 +15,7 @@ class _SettingsState extends State<Settings> {
   ];
 
   Future<void> _addAccount() async {
-    final TextEditingController controller = TextEditingController();
+    final controller = TextEditingController();
 
     await showDialog(
       context: context,
@@ -49,7 +49,7 @@ class _SettingsState extends State<Settings> {
   }
 
   Future<void> _renameAccount(final int index) async {
-    final TextEditingController controller = TextEditingController(
+    final controller = TextEditingController(
       text: _accounts[index],
     );
 

lib/Pages/Trend/trend.dart

@@ -76,7 +76,7 @@ class _TrendState extends State<Trend> {
   }
 
   Future<void> _pickDateRange() async {
-    final DateTime now = DateTime.now();
+    final now = DateTime.now();
     final DateTimeRange<DateTime>? picked = await showDateRangePicker(
       context: context,
       firstDate: DateTime(now.year - 5),
@@ -91,7 +91,7 @@ class _TrendState extends State<Trend> {
   }
 
   void _updateUrl() {
-    final Map<String, String> params = <String, String>{
+    final params = <String, String>{
       if (nameController.text.isNotEmpty) 'name': nameController.text,
       if (minController.text.isNotEmpty) 'min': minController.text,
       if (maxController.text.isNotEmpty) 'max': maxController.text,
@@ -104,7 +104,7 @@ class _TrendState extends State<Trend> {
   }
 
   String _monthName(final int month) {
-    const List<String> names = <String>[
+    const names = <String>[
       '',
       'Januar',
       'Februar',
@@ -135,9 +135,9 @@ class _TrendState extends State<Trend> {
 
     final List<Map<String, Object>> filteredTransactions =
         transactions.where((final Map<String, Object> tx) {
-          final DateTime date = tx['date']! as DateTime;
+          final date = tx['date']! as DateTime;
 
-          bool rangeMatch = true;
+          var rangeMatch = true;
           if (selectedRange != null) {
             rangeMatch =
                 !date.isBefore(selectedRange!.start) &&
@@ -147,7 +147,7 @@ class _TrendState extends State<Trend> {
           final bool nameMatch =
               searchName.isEmpty ||
               ((tx['name'] ?? '') as String).contains(searchName);
-          final double amount = (tx['amount'] ?? 0) as double;
+          final amount = (tx['amount'] ?? 0) as double;
           final bool amountMatch =
               (minAmount == null || amount >= minAmount) &&
               (maxAmount == null || amount <= maxAmount);
@@ -158,11 +158,10 @@ class _TrendState extends State<Trend> {
               (b['date']! as DateTime).compareTo(a['date']! as DateTime),
         );
 
-    final Map<String, List<Map<String, Object>>> transactionsByMonth =
-        <String, List<Map<String, Object>>>{};
-    for (final Map<String, Object> tx in filteredTransactions) {
-      final DateTime date = tx['date']! as DateTime;
-      final String monthName = '${_monthName(date.month)} ${date.year}';
+    final transactionsByMonth = <String, List<Map<String, Object>>>{};
+    for (final tx in filteredTransactions) {
+      final date = tx['date']! as DateTime;
+      final monthName = '${_monthName(date.month)} ${date.year}';
       transactionsByMonth
           .putIfAbsent(monthName, () => <Map<String, Object>>[])
           .add(tx);
@@ -339,8 +338,8 @@ class _TrendState extends State<Trend> {
                       final int index,
                     ) {
                       final Map<String, Object> tx = entry.value[index];
-                      final double amount = (tx['amount'] ?? 0) as double;
-                      final DateTime date = tx['date']! as DateTime;
+                      final amount = (tx['amount'] ?? 0) as double;
+                      final date = tx['date']! as DateTime;
                       return ListTile(
                         contentPadding: EdgeInsets.zero,
                         title: Text((tx['name'] ?? '') as String),