return slider value after popup

lib/pages/interval_page.dart

@@ -1,7 +1,6 @@
-import 'dart:async';
-import 'package:audioplayers/audioplayers.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:smoke_cess_app/providers/input_provider.dart';
 import 'package:smoke_cess_app/providers/timer_provider.dart';
 import 'package:smoke_cess_app/providers/workout_provider.dart';
 import 'package:smoke_cess_app/widgets/mute_button.dart';
@@ -17,7 +16,7 @@ class IntervalTimerPage extends StatelessWidget {
       providers: [
         ChangeNotifierProvider(create: (context) => timerProvider),
         ChangeNotifierProvider(
-            create: (context) => WorkoutProvider(timerProvider))
+            create: (context) => WorkoutProvider(timerProvider)),
       ],
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,

lib/widgets/popup_for_start_and_stop.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:smoke_cess_app/providers/input_provider.dart';
 import 'package:smoke_cess_app/widgets/slider.dart';
 import 'package:smoke_cess_app/widgets/text_formfield.dart';
 
@@ -9,18 +11,24 @@ class TimerStartStopPopup extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    InputProvider inputProvider = context.watch<InputProvider>();
+
     return AlertDialog(
       title: Text(title),
       content: Column(
         mainAxisSize: MainAxisSize.min,
         crossAxisAlignment: CrossAxisAlignment.start,
-        children: const [
+        children: [
-          Padding(
+          const Padding(
-            padding: const EdgeInsets.only(top: 8),
+            padding: EdgeInsets.only(top: 8),
             child: MySlider(),
           ),
-          SizedBox(height: 16),
+          const SizedBox(height: 16),
-          MyTextFormField('Beschreibe deinen Motivation'),
+          const MyTextFormField('Beschreibe deinen Motivation'),
+          ElevatedButton(
+              onPressed: () =>
+                  Navigator.pop(context, inputProvider.sliderValue),
+              child: const Text('Speichern'))
         ],
       ),
     );

lib/widgets/workout_timer_widget.dart

@@ -5,11 +5,15 @@ import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/providers/workout_provider.dart';
 import 'package:smoke_cess_app/widgets/timer_widget.dart';
 
+import '../providers/input_provider.dart';
 import '../providers/timer_provider.dart';
+import 'popup_for_start_and_stop.dart';
 
 class WorkoutTimerWidget extends StatelessWidget {
   const WorkoutTimerWidget({super.key});
 
+  void _onStartButtonPressed(BuildContext context) {}
+
   @override
   Widget build(BuildContext context) {
     TimerProvider timerProvider = context.watch<TimerProvider>();
@@ -46,7 +50,21 @@ class WorkoutTimerWidget extends StatelessWidget {
         ),
         ElevatedButton(
             onPressed: !workoutProvider.isWorkoutStarted
-                ? () => workoutProvider.startWorkout()
+                ? () async {
+                    double sliderValue = await showDialog(
+                      context: context,
+                      builder: (BuildContext context) {
+                        return ChangeNotifierProvider(
+                          create: (context) => InputProvider(),
+                          child: const TimerStartStopPopup(
+                            title: 'Motivation vor dem Training',
+                          ),
+                        );
+                      },
+                    );
+                    print(sliderValue);
+                    workoutProvider.startWorkout();
+                  }
                 : () => workoutProvider.stopWorkout(),
             child: Text(timerProvider.started ? 'Stop' : 'Start'))
       ],