Implement about page

1 files changed, 2 insertions, 111 deletions

diff --git a/lib/main.dart b/lib/main.dart
index 273f93f..1bfbccc 100755
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,21 +1,8 @@
-import 'dart:async';

-

 import 'package:flutter/material.dart';

-import 'package:geolocator/geolocator.dart';

-

-enum SpeedUnit { milesPerHour, kilometersPerHour }

 

-extension on SpeedUnit {

-  double fromMetersPerSecond(double metersPerSecond) => switch (this) {

-    SpeedUnit.kilometersPerHour => metersPerSecond * 3.6,

-    SpeedUnit.milesPerHour => metersPerSecond * 2.236936,

-  };

+import 'home.dart';

 

-  String get acronym => switch (this) {

-    SpeedUnit.kilometersPerHour => 'kmph',

-    SpeedUnit.milesPerHour => 'mph',

-  };

-}

+enum SpeedUnit { milesPerHour, kilometersPerHour }

 

 void main() async {

   runApp(const MyApp());

@@ -41,99 +28,3 @@ class MyApp extends StatelessWidget {
     );

   }

 }

-

-class HomePage extends StatefulWidget {

-  const HomePage({super.key});

-

-  @override

-  State<HomePage> createState() => _HomePageState();

-}

-

-class _HomePageState extends State<HomePage> {

-  StreamSubscription<Position>? _positionStream;

-  double _speed = 0.0;

-  double _speedAccuracy = 0.0;

-  SpeedUnit _speedUnit = SpeedUnit.milesPerHour;

-  LocationSettings _locationSettings = LocationSettings();

-

-  _initPositionStream() {

-    _positionStream =

-        Geolocator.getPositionStream(

-          locationSettings: _locationSettings,

-        ).listen((Position? position) {

-          if (position != null) {

-            setState(() {

-              _speed = position.speed;

-              _speedAccuracy = position.speedAccuracy;

-            });

-          }

-        });

-  }

-

-  @override

-  void initState() {

-    super.initState();

-

-    Geolocator.checkPermission()

-        .then(

-          (permission) => permission == LocationPermission.denied

-              ? Geolocator.requestPermission()

-              : permission,

-        )

-        .then((permission) {

-          if (![

-            LocationPermission.deniedForever,

-            LocationPermission.denied,

-          ].contains(permission)) {

-            _initPositionStream();

-          }

-        });

-  }

-

-  @override

-  void dispose() {

-    super.dispose();

-    _positionStream?.cancel();

-  }

-

-  @override

-  Widget build(BuildContext context) {

-    return Scaffold(

-      appBar: AppBar(

-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,

-        title: Text("Speedometer"),

-        actions: [

-          MenuAnchor(

-            builder: (context, controller, _child) => IconButton(

-              icon: Icon(Icons.more_vert),

-              onPressed: () =>

-                  controller.isOpen ? controller.close() : controller.open(),

-              tooltip: "Navigation menu",

-            ),

-            menuChildren: [

-              MenuItemButton(child: Text('Settings')),

-              MenuItemButton(child: Text('About')),

-            ],

-          ),

-        ],

-      ),

-      body: Center(

-        child: Column(

-          mainAxisAlignment: MainAxisAlignment.center,

-          crossAxisAlignment: CrossAxisAlignment.center,

-          children: [

-            Flex(direction: Axis.horizontal),

-            Text(

-              '${_speedUnit.fromMetersPerSecond(_speed).round()} ${_speedUnit.acronym}',

-              style: Theme.of(context).textTheme.displayLarge,

-            ),

-            Text(

-              '± ${_speedUnit.fromMetersPerSecond(_speedAccuracy).round()} ${_speedUnit.acronym}',

-              style: Theme.of(context).textTheme.displaySmall,

-            ),

-          ],

-        ),

-      ),

-    );

-  }

-}