Created Popup for start and stop timer

lib/pages/interval_page.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'package:audioplayers/audioplayers.dart';
 import 'package:flutter/material.dart';
+import 'package:smoke_cess_app/widgets/popup_for_start_and_stop.dart';
 
 class IntervalTimerPage extends StatefulWidget {
   const IntervalTimerPage({Key? key}) : super(key: key);
@@ -38,11 +39,19 @@ class _IntervalTimerPageState extends State<IntervalTimerPage> {
     super.dispose();
   }
 
-  void _startTimer() {
+  void _startTimer() async {
+    await showDialog(
+      context: context,
+      builder: (BuildContext context) {
+        return const StartTimerPopup(
+          title: 'Motivation vor dem Training',
+          text: 'Du gehörst zu Gruppe',
+        );
+      },
+    );
     _isPaused = false;
-    () async {
-      await AudioPlayer().play(UrlSource('assets/go.mp3'));
-    }();
+    await AudioPlayer().play(UrlSource('assets/go.mp3'));
+
     _timer = Timer.periodic(const Duration(seconds: 1), (_) => _tick());
     Future.delayed(const Duration(seconds: 1)).then((value) {
       _playWarmUpMusic();
@@ -61,6 +70,15 @@ class _IntervalTimerPageState extends State<IntervalTimerPage> {
     _currentDuration = _warmupDuration;
     _totalDuration = const Duration(minutes: 35);
     setState(() {});
+    showDialog(
+      context: context,
+      builder: (BuildContext context) {
+        return const StartTimerPopup(
+          title: 'Motivation nach dem Training',
+          text: 'Du gehörst zu Gruppe',
+        );
+      },
+    );
   }
 
   Future<void> _playWarmUpMusic() async {

lib/widgets/elevated_card.dart

@@ -18,18 +18,18 @@ class ElevatedCard extends StatelessWidget {
         borderRadius: BorderRadius.circular(16.0),
       ),
       child: Padding(
-        padding: const EdgeInsets.all(16.0),
+        padding: const EdgeInsets.all(14.0),
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Text(
               title,
-              style: TextStyle(
-                fontSize: 18.0,
+              style: const TextStyle(
+                fontSize: 16.0,
                 fontWeight: FontWeight.bold,
               ),
             ),
-            SizedBox(height: 8.0),
+            const SizedBox(height: 8.0),
             child,
           ],
         ),

lib/widgets/mood_form.dart

@@ -14,7 +14,7 @@ class MoodForm extends StatefulWidget {
 
 class _MoodFormState extends State<MoodForm> {
   final GlobalKey<FormState> _moodFormKey = GlobalKey<FormState>();
-  MySlider slider = const MySlider('');
+  MySlider slider = const MySlider();
   String _textInput = "";
 
   void submitForm() {

lib/widgets/popup_for_start_and_stop.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+import 'package:smoke_cess_app/widgets/slider.dart';
+import 'package:smoke_cess_app/widgets/submit_form_button.dart';
+import 'package:smoke_cess_app/widgets/text_formfield.dart';
+
+class StartTimerPopup extends StatefulWidget {
+  final String title;
+  final String text;
+
+  const StartTimerPopup({Key? key, required this.title, required this.text})
+      : super(key: key);
+
+  @override
+  _StartTimerPopupState createState() => _StartTimerPopupState();
+}
+
+class _StartTimerPopupState extends State<StartTimerPopup> {
+  final MySlider slider = const MySlider();
+  String _textInput = '';
+
+  void submitForm(BuildContext context) {
+    Navigator.of(context).pop();
+  }
+
+  void onFormFieldSave(String? newValue) => _textInput = newValue!;
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Text(widget.title),
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Padding(
+            padding: EdgeInsets.only(top: 8),
+            child: MySlider(labelText: 'Motivation'),
+          ),
+          const SizedBox(height: 16),
+          MyTextFormField('Beschreibe deinen Motivation', onFormFieldSave),
+          SubmitFormButton(() => submitForm(context)),
+        ],
+      ),
+    );
+  }
+}

lib/widgets/sleep_form.dart

@@ -14,7 +14,7 @@ class SleepForm extends StatefulWidget {
 
 class _SleepFormState extends State<SleepForm> {
   final GlobalKey<FormState> _sleepFormKey = GlobalKey<FormState>();
-  MySlider slider = const MySlider('');
+  MySlider slider = const MySlider();
   String _textInput = "";
   TimePicker sleepTimePicker = TimePicker(
     const TimeOfDay(hour: 22, minute: 00),

lib/widgets/slider.dart

@@ -3,8 +3,10 @@ import 'package:flutter/material.dart';
 double _currentSliderValue = 50;
 
 class MySlider extends StatefulWidget {
-  final String _title;
-  const MySlider(this._title, {Key? key}) : super(key: key);
+  final String _labelText;
+  const MySlider({Key? key, String labelText = 'Stimmung'})
+      : _labelText = labelText,
+        super(key: key);
 
   @override
   State<StatefulWidget> createState() => SliderState();
@@ -30,7 +32,6 @@ class SliderState extends State<MySlider> {
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Text(widget._title),
           SizedBox(height: 16),
           Row(
             mainAxisAlignment: MainAxisAlignment.center,
@@ -58,7 +59,7 @@ class SliderState extends State<MySlider> {
                   controller: _textFieldController,
                   keyboardType: TextInputType.number,
                   decoration: InputDecoration(
-                    labelText: 'Stimmung',
+                    labelText: widget._labelText,
                     errorText: _errorText,
                   ),
                   onChanged: (text) {