Slider in settings to adjust days of forecast loaded. Settings are saved and loaded

2022-08-31 22:09:47 +02:00
parent b20e7cfb46
commit 4fac2ecf0a
8 changed files with 244 additions and 11 deletions
@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class SettingsForm extends StatefulWidget {
+  const SettingsForm({Key? key}) : super(key: key);
+
+  @override
+  SettingsFormState createState() => SettingsFormState();
+}
+
+class SettingsFormState extends State<SettingsForm> {
+  SharedPreferences? prefs;
+  int _daysToLoad = 7;
+  final _formKey = GlobalKey<FormState>();
+
+  @override
+  void initState() {
+    super.initState();
+    initializePreferences().whenComplete(() => setState(() {
+          _daysToLoad = prefs?.getInt("daysToLoad") ?? 7;
+        }));
+  }
+
+  Future<void> initializePreferences() async {
+    prefs = await SharedPreferences.getInstance();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Form(
+        key: _formKey,
+        child: Column(
+          children: [
+            Slider(
+              value: _daysToLoad.toDouble(),
+              min: 1.0,
+              max: 14.0,
+              divisions: 14,
+              label: _daysToLoad.round().toString(),
+              onChanged: (double value) {
+                setState(() {
+                  _daysToLoad = value.round();
+                  prefs?.setInt("daysToLoad", _daysToLoad);
+                });
+              },
+            )
+          ],
+        ));
+  }
+}