Fehlerkorrekturen und Erweiterungen

lib/content_views/set_desired_zip_page.dart

@@ -28,6 +28,11 @@ class _SetDesiredZipPageState extends State<SetDesiredZipPage> with ProducerMixi
 
   @override
   void initState() {
+    var savedDesiredZip = Util.preferencesGetString(Constants.prefsDesiredZip, null);
+    if (savedDesiredZip != null) {
+      textEditController.text = savedDesiredZip;
+    }
+
     super.initState();
   }
 
@@ -47,8 +52,13 @@ class _SetDesiredZipPageState extends State<SetDesiredZipPage> with ProducerMixi
                       width: 120, // Festlegen der Breite des Textfelds
                       child:
                         Util.getDefaultTextField('PLZ',
-                          textInputType: TextInputType.text,
-                          formatter: [FilteringTextInputFormatter.singleLineFormatter],
+                          textInputType: TextInputType.number,
+                          formatter: [
+                            // Erlaubt nur Ziffern
+                            FilteringTextInputFormatter.digitsOnly,
+                            // Begrenzt die maximale Eingabelänge auf 5 Zeichen
+                            LengthLimitingTextInputFormatter(5),
+                          ],
                           controller: textEditController,
                           maxLength: 5,
                           autofocus: true
@@ -59,14 +69,18 @@ class _SetDesiredZipPageState extends State<SetDesiredZipPage> with ProducerMixi
                 const SizedBox(height: 20),
                 getDefaultButton('Übernehmen', () =>
                 {
-                  Util.preferencesSaveString(Constants.prefsDesiredZip, textEditController.text),
+                  if (textEditController.text.isEmpty || textEditController.text.length == 5) {
+                    Util.preferencesSaveString(Constants.prefsDesiredZip, textEditController.text),
 
-                  _sendDesiredZipMessage(textEditController.text),
+                    _sendDesiredZipMessage(textEditController.text),
 
-                  sendMessage(
-                    routingKey: Constants.messageTopicPopContentView,
-                    payload: PopContentViewMessage(count: 1),
-                  )
+                    sendMessage(
+                      routingKey: Constants.messageTopicPopContentView,
+                      payload: PopContentViewMessage(count: 1),
+                    )
+                  } else {
+                    showAlertDialog("Fehler", "Das Feld muss leer sein, oder es müssen fünf Zahlen eingegeben werden")
+                  }
                 })
               ]
       ),
@@ -79,7 +93,7 @@ class _SetDesiredZipPageState extends State<SetDesiredZipPage> with ProducerMixi
 
     sendMessage(
       routingKey: Constants.messageTopicPublishPayload,
-      payload: PublishPayloadMessage(topic: "set_desired_zip", message: desiredZipMessage.toJson(),acknowledgeRequired: true),
+      payload: PublishPayloadMessage(topic: "set_desired_zip", message: desiredZipMessage.toJson(), acknowledgeRequired: true),
     );
   }
 }