From 9e84b9eb816b1ba2f73acb5d8da4c03f7e445788 Mon Sep 17 00:00:00 2001
From: Morten Nielsen <mn@iter.dk>
Date: Fri, 4 Aug 2023 10:01:26 -0700
Subject: [PATCH] Upgrade Android sample app to .net6.0

---
 .../{Properties => }/AndroidManifest.xml      |   7 +-
 src/SampleApp.Droid/MainActivity.cs           | 339 +++++-----
 .../Properties/AssemblyInfo.cs                |  30 -
 .../Resources/AboutResources.txt              |  44 ++
 .../Resources/Resource.Designer.cs            | 588 ------------------
 .../layout/{Main.axml => activity_main.xml}   |   4 +-
 .../Resources/values/Strings.xml              |   7 +-
 .../values/ic_launcher_background.xml         |   4 +
 src/SampleApp.Droid/SampleApp.Droid.csproj    | 108 +---
 9 files changed, 238 insertions(+), 893 deletions(-)
 rename src/SampleApp.Droid/{Properties => }/AndroidManifest.xml (64%)
 delete mode 100644 src/SampleApp.Droid/Properties/AssemblyInfo.cs
 create mode 100644 src/SampleApp.Droid/Resources/AboutResources.txt
 delete mode 100644 src/SampleApp.Droid/Resources/Resource.Designer.cs
 rename src/SampleApp.Droid/Resources/layout/{Main.axml => activity_main.xml} (96%)
 create mode 100644 src/SampleApp.Droid/Resources/values/ic_launcher_background.xml

diff --git a/src/SampleApp.Droid/Properties/AndroidManifest.xml b/src/SampleApp.Droid/AndroidManifest.xml
similarity index 64%
rename from src/SampleApp.Droid/Properties/AndroidManifest.xml
rename to src/SampleApp.Droid/AndroidManifest.xml
index 6a7f8b3..e92bd31 100644
--- a/src/SampleApp.Droid/Properties/AndroidManifest.xml
+++ b/src/SampleApp.Droid/AndroidManifest.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="SampleApp.Droid.SampleApp.Droid" android:versionCode="1" android:versionName="1.0" android:installLocation="auto">
-	<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="27" />
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 	<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 	<uses-permission android:name="android.permission.BLUETOOTH" />
-	<application android:allowBackup="true" android:label="@string/app_name"></application>
+	<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+	<application android:allowBackup="true" android:label="@string/app_name" android:supportsRtl="true"></application>
+	<uses-sdk />
 </manifest>
\ No newline at end of file
diff --git a/src/SampleApp.Droid/MainActivity.cs b/src/SampleApp.Droid/MainActivity.cs
index 49ec478..397c97d 100644
--- a/src/SampleApp.Droid/MainActivity.cs
+++ b/src/SampleApp.Droid/MainActivity.cs
@@ -1,181 +1,178 @@
-using Android.App;
-using Android.Widget;
-using Android.OS;
 using Android;
-using Android.Support.V4.App;
-using Android.Support.V4.Content;
 using Android.Content.PM;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using NmeaParser.Messages;
+using AndroidX.Core.App;
 
-namespace SampleApp.Droid
+namespace SampleApp.Droid;
+
+[Activity(Label = "@string/app_name", MainLauncher = true, Icon = "@drawable/icon")]
+public class MainActivity : Activity
 {
-    [Activity(Label = "NMEA Parser SampleApp", MainLauncher = true, Icon = "@drawable/icon")]
-    public class MainActivity : Activity
+    private Button startButton;
+    private Button stopButton;
+
+    protected override void OnCreate(Bundle? savedInstanceState)
+    {
+        base.OnCreate(savedInstanceState);
+
+        // Set our view from the "main" layout resource
+        SetContentView(Resource.Layout.activity_main);
+        startButton = FindViewById<Button>(Resource.Id.startButton)!;
+        startButton.Click += StartButton_Click;
+
+        stopButton = FindViewById<Button>(Resource.Id.stopButton)!;
+        stopButton.Click += StopButton_Click;
+        stopButton.Enabled = false;
+
+        devices.Add("System GPS", null);
+        var devicePicker = FindViewById<Spinner>(Resource.Id.device_picker);
+
+        if (this.ApplicationContext!.CheckSelfPermission(Manifest.Permission.BluetoothConnect) != Permission.Granted)
+        {
+            ActivityCompat.RequestPermissions(this, new[] { Manifest.Permission.BluetoothConnect }, 1000);
+            return;
+        }
+
+        foreach (var d in NmeaParser.BluetoothDevice.GetBluetoothSerialDevices())
+        {
+            devices[d.Name + " " + d.Address] = d.Address;
+        }
+        devicePicker.Adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, devices.Keys.ToArray());
+        devicePicker.SetSelection(0);
+    }
+
+    private Dictionary<string, string?> devices = new Dictionary<string, string?>();
+
+    private void StopButton_Click(object? sender, EventArgs e)
     {
-        private Button startButton;
-        private Button stopButton;
-
-        protected override void OnCreate(Bundle savedInstanceState)
-        {
-            base.OnCreate(savedInstanceState);
-
-            // Set our view from the "main" layout resource
-            SetContentView(Resource.Layout.Main);
-            startButton = FindViewById<Button>(Resource.Id.startButton);
-            startButton.Click += StartButton_Click;
-
-            stopButton = FindViewById<Button>(Resource.Id.stopButton);
-            stopButton.Click += StopButton_Click;
-            stopButton.Enabled = false;
-
-            devices.Add("System GPS", null);
-            var devicePicker = FindViewById<Spinner>(Resource.Id.device_picker);
-            foreach(var d in NmeaParser.BluetoothDevice.GetBluetoothSerialDevices())
-            {
-                devices[d.Name + " " + d.Address] = d.Address;
-            }
-            devicePicker.Adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, devices.Keys.ToArray());
-            devicePicker.SetSelection(0);
-        }
-
-        private Dictionary<string, string> devices = new Dictionary<string, string>();
-
-        private void StopButton_Click(object sender, EventArgs e)
-        {
-            if (listener?.IsOpen == true)
-            {
-                Stop();
-            }
-        }
-
-        private void Stop()
-        {
-            listener.MessageReceived -= Listener_MessageReceived;
-            monitor.LocationChanged -= Monitor_LocationChanged;
-            socket?.Close();
-            socket?.Dispose();
-            socket = null;
-            _ = listener.CloseAsync();
-            listener = null;
-            startButton.Enabled = !(stopButton.Enabled = false);            
-        }
-
-        private void StartButton_Click(object sender, EventArgs e)
-        {
-            if (listener?.IsOpen != true)
-            {
-                Start();
-            }
-        }
-
-        private NmeaParser.NmeaDevice listener;
-        private NmeaParser.Gnss.GnssMonitor monitor;
-        private TextView status;
-        private bool launched;
-        private Android.Bluetooth.BluetoothSocket socket;
-
-        private async void Start()
-        {
-            startButton.Enabled = false;
-            status = FindViewById<TextView>(Resource.Id.output);
-            var devicePicker = FindViewById<Spinner>(Resource.Id.device_picker);
-            var id = devicePicker.SelectedItem.ToString();
-            var btAddress = devices[id];
-            if (btAddress == null)
-            {
-                if (ContextCompat.CheckSelfPermission(this, Manifest.Permission.AccessFineLocation) != Permission.Granted)
-                {
-                    ActivityCompat.RequestPermissions(this, new[] { Manifest.Permission.AccessFineLocation }, 1000);
-                    return;
-                }
-                if (launched)
-                    return;
-
-                launched = true;
-                listener = new NmeaParser.SystemNmeaDevice(ApplicationContext);
-            }
-            else //Bluetooth
-            {
-                try
-                {
-                    status.Text = "Opening bluetooth...";
-                    var adapter = Android.Bluetooth.BluetoothAdapter.DefaultAdapter;
-                    var bt = Android.Bluetooth.BluetoothAdapter.DefaultAdapter.GetRemoteDevice(btAddress);
-                    Java.Util.UUID SERIAL_UUID = Java.Util.UUID.FromString("00001101-0000-1000-8000-00805F9B34FB"); //UUID for Serial Device Service
-                    socket = bt.CreateRfcommSocketToServiceRecord(SERIAL_UUID);
-                    try
-                    {
-                        await socket.ConnectAsync();
-                    }
-                    catch(Java.IO.IOException)
-                    {
-                        // This sometimes fails. Use fallback approach to open socket
-                        // Based on https://stackoverflow.com/a/41627149
-                        socket.Dispose();
-                        var m = bt.Class.GetMethod("createRfcommSocket", new Java.Lang.Class[] { Java.Lang.Integer.Type });
-                        socket = m.Invoke(bt, new Java.Lang.Object[] { 1 }) as Android.Bluetooth.BluetoothSocket;
-                        socket.Connect();
-                    }
-                    listener = new NmeaParser.StreamDevice(socket.InputStream);
-                }
-                catch(System.Exception ex)
-                {
-                    socket?.Dispose();
-                    socket = null;
-                    status.Text += "\nError opening Bluetooth device:\n" + ex.Message;
-                }
-            }
-
-            if (listener != null)
-            {
-                listener.MessageReceived += Listener_MessageReceived;
-                status.Text += "\nOpening device...";
-                await listener.OpenAsync();
-                status.Text += "\nConnected!";
-                startButton.Enabled = !(stopButton.Enabled = true);
-                monitor = new NmeaParser.Gnss.GnssMonitor(listener);
-                monitor.LocationChanged += Monitor_LocationChanged;
-            }
-            else
-            {
-                startButton.Enabled = !(stopButton.Enabled = false);
-            }
-        }
-
-        protected override void OnDestroy()
+        if (listener?.IsOpen == true)
         {
             Stop();
-            base.OnDestroy();
-        }
-
-        protected override void OnResume()
-        {
-            base.OnResume();
-            // if it was resumed by the GPS permissions dialog
-            //Start();
-        }
-
-        Queue<NmeaParser.Messages.NmeaMessage> messages = new Queue<NmeaParser.Messages.NmeaMessage>(100);
-        private void Listener_MessageReceived(object sender, NmeaParser.NmeaMessageReceivedEventArgs e)
-        {
-            var message = e.Message;
-            RunOnUiThread(() =>
-            {
-                if (messages.Count == 100) messages.Dequeue();
-                messages.Enqueue(message);
-                status.Text = string.Join("\n", messages.Reverse().Select(n=>n.ToString()));
-            });
-        }
-
-        private void Monitor_LocationChanged(object sender, EventArgs e)
-        {
-            FindViewById<TextView>(Resource.Id.latitude).Text = "Latitude = " + monitor.Latitude.ToString("0.0000000");
-            FindViewById<TextView>(Resource.Id.longitude).Text = "Longitude = " + monitor.Longitude.ToString("0.0000000");
-            FindViewById<TextView>(Resource.Id.altitude).Text = "Altitude = " + monitor.Altitude.ToString();
         }
     }
-}
 
+    private void Stop()
+    {
+        listener!.MessageReceived -= Listener_MessageReceived;
+        monitor!.LocationChanged -= Monitor_LocationChanged;
+        socket?.Close();
+        socket?.Dispose();
+        socket = null;
+        _ = listener.CloseAsync();
+        listener = null;
+        startButton.Enabled = !(stopButton.Enabled = false);
+    }
+
+    private void StartButton_Click(object? sender, EventArgs e)
+    {
+        if (listener?.IsOpen != true)
+        {
+            Start();
+        }
+    }
+
+    private NmeaParser.NmeaDevice? listener;
+    private NmeaParser.Gnss.GnssMonitor? monitor;
+    private TextView? status;
+    private bool launched;
+    private Android.Bluetooth.BluetoothSocket? socket;
+
+    private async void Start()
+    {
+        startButton.Enabled = false;
+        status = FindViewById<TextView>(Resource.Id.output);
+        var devicePicker = FindViewById<Spinner>(Resource.Id.device_picker)!;
+        var id = devicePicker.SelectedItem?.ToString();
+        var btAddress = devices[id];
+        if (btAddress == null)
+        {
+            if (this.ApplicationContext!.CheckSelfPermission(Manifest.Permission.AccessFineLocation) != Permission.Granted)
+            {
+                ActivityCompat.RequestPermissions(this, new[] { Manifest.Permission.AccessFineLocation }, 1000);
+                return;
+            }
+            if (launched)
+                return;
+
+            launched = true;
+            listener = new NmeaParser.SystemNmeaDevice(ApplicationContext);
+        }
+        else //Bluetooth
+        {
+            try
+            {
+                status.Text = "Opening bluetooth...";
+                var adapter = Android.Bluetooth.BluetoothAdapter.DefaultAdapter;
+                var bt = Android.Bluetooth.BluetoothAdapter.DefaultAdapter.GetRemoteDevice(btAddress);
+                Java.Util.UUID SERIAL_UUID = Java.Util.UUID.FromString("00001101-0000-1000-8000-00805F9B34FB"); //UUID for Serial Device Service
+                socket = bt.CreateRfcommSocketToServiceRecord(SERIAL_UUID);
+                try
+                {
+                    await socket.ConnectAsync();
+                }
+                catch (Java.IO.IOException)
+                {
+                    // This sometimes fails. Use fallback approach to open socket
+                    // Based on https://stackoverflow.com/a/41627149
+                    socket?.Dispose();
+                    var m = bt.Class.GetMethod("createRfcommSocket", new Java.Lang.Class[] { Java.Lang.Integer.Type });
+                    socket = (Android.Bluetooth.BluetoothSocket)m.Invoke(bt, new Java.Lang.Object[] { 1 })!;
+                    socket.Connect();
+                }
+                listener = new NmeaParser.StreamDevice(socket.InputStream);
+            }
+            catch (System.Exception ex)
+            {
+                socket?.Dispose();
+                socket = null;
+                status.Text += "\nError opening Bluetooth device:\n" + ex.Message;
+            }
+        }
+
+        if (listener != null)
+        {
+            listener.MessageReceived += Listener_MessageReceived;
+            status!.Text += "\nOpening device...";
+            await listener.OpenAsync();
+            status.Text += "\nConnected!";
+            startButton.Enabled = !(stopButton.Enabled = true);
+            monitor = new NmeaParser.Gnss.GnssMonitor(listener);
+            monitor.LocationChanged += Monitor_LocationChanged;
+        }
+        else
+        {
+            startButton.Enabled = !(stopButton.Enabled = false);
+        }
+    }
+
+    protected override void OnDestroy()
+    {
+        Stop();
+        base.OnDestroy();
+    }
+
+    protected override void OnResume()
+    {
+        base.OnResume();
+        // if it was resumed by the GPS permissions dialog
+        //Start();
+    }
+
+    Queue<NmeaParser.Messages.NmeaMessage> messages = new Queue<NmeaParser.Messages.NmeaMessage>(100);
+    private void Listener_MessageReceived(object? sender, NmeaParser.NmeaMessageReceivedEventArgs e)
+    {
+        var message = e.Message;
+        RunOnUiThread(() =>
+        {
+            if (messages.Count == 100) messages.Dequeue();
+            messages.Enqueue(message);
+            status!.Text = string.Join("\n", messages.Reverse().Select(n => n.ToString()));
+        });
+    }
+
+    private void Monitor_LocationChanged(object? sender, EventArgs e)
+    {
+        FindViewById<TextView>(Resource.Id.latitude)!.Text = "Latitude = " + monitor!.Latitude.ToString("0.0000000");
+        FindViewById<TextView>(Resource.Id.longitude)!.Text = "Longitude = " + monitor!.Longitude.ToString("0.0000000");
+        FindViewById<TextView>(Resource.Id.altitude)!.Text = "Altitude = " + monitor!.Altitude.ToString();
+    }
+}
\ No newline at end of file
diff --git a/src/SampleApp.Droid/Properties/AssemblyInfo.cs b/src/SampleApp.Droid/Properties/AssemblyInfo.cs
deleted file mode 100644
index 4780de0..0000000
--- a/src/SampleApp.Droid/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,30 +0,0 @@
-using System.Reflection;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using Android.App;
-
-// General Information about an assembly is controlled through the following 
-// set of attributes. Change these attribute values to modify the information
-// associated with an assembly.
-[assembly: AssemblyTitle("SampleApp.Droid")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("SampleApp.Droid")]
-[assembly: AssemblyCopyright("Copyright ©  2018")]
-[assembly: AssemblyTrademark("")]
-[assembly: AssemblyCulture("")]
-[assembly: ComVisible(false)]
-
-// Version information for an assembly consists of the following four values:
-//
-//      Major Version
-//      Minor Version 
-//      Build Number
-//      Revision
-//
-// You can specify all the values or you can default the Build and Revision Numbers 
-// by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/src/SampleApp.Droid/Resources/AboutResources.txt b/src/SampleApp.Droid/Resources/AboutResources.txt
new file mode 100644
index 0000000..219f425
--- /dev/null
+++ b/src/SampleApp.Droid/Resources/AboutResources.txt
@@ -0,0 +1,44 @@
+Images, layout descriptions, binary blobs and string dictionaries can be included 
+in your application as resource files.  Various Android APIs are designed to 
+operate on the resource IDs instead of dealing with images, strings or binary blobs 
+directly.
+
+For example, a sample Android app that contains a user interface layout (main.xml),
+an internationalization string table (strings.xml) and some icons (drawable-XXX/icon.png) 
+would keep its resources in the "Resources" directory of the application:
+
+Resources/
+    drawable/
+        icon.png
+
+    layout/
+        main.xml
+
+    values/
+        strings.xml
+
+In order to get the build system to recognize Android resources, set the build action to
+"AndroidResource".  The native Android APIs do not operate directly with filenames, but 
+instead operate on resource IDs.  When you compile an Android application that uses resources, 
+the build system will package the resources for distribution and generate a class called "Resource" 
+(this is an Android convention) that contains the tokens for each one of the resources 
+included. For example, for the above Resources layout, this is what the Resource class would expose:
+
+public class Resource {
+    public class Drawable {
+        public const int icon = 0x123;
+    }
+
+    public class Layout {
+        public const int main = 0x456;
+    }
+
+    public class Strings {
+        public const int first_string = 0xabc;
+        public const int second_string = 0xbcd;
+    }
+}
+
+You would then use Resource.Drawable.icon to reference the drawable/icon.png file, or 
+Resource.Layout.main to reference the layout/main.xml file, or Resource.Strings.first_string 
+to reference the first string in the dictionary file values/strings.xml.
\ No newline at end of file
diff --git a/src/SampleApp.Droid/Resources/Resource.Designer.cs b/src/SampleApp.Droid/Resources/Resource.Designer.cs
deleted file mode 100644
index f26720c..0000000
--- a/src/SampleApp.Droid/Resources/Resource.Designer.cs
+++ /dev/null
@@ -1,588 +0,0 @@
-#pragma warning disable 1591
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     This code was generated by a tool.
-//
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-[assembly: global::Android.Runtime.ResourceDesignerAttribute("SampleApp.Droid.Resource", IsApplication=true)]
-
-namespace SampleApp.Droid
-{
-	
-	
-	[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Android.Build.Tasks", "12.1.0.11")]
-	public partial class Resource
-	{
-		
-		static Resource()
-		{
-			global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-		}
-		
-		public static void UpdateIdValues()
-		{
-		}
-		
-		public partial class Attribute
-		{
-			
-			// aapt resource value: 0x7F010000
-			public const int font = 2130771968;
-			
-			// aapt resource value: 0x7F010001
-			public const int fontProviderAuthority = 2130771969;
-			
-			// aapt resource value: 0x7F010002
-			public const int fontProviderCerts = 2130771970;
-			
-			// aapt resource value: 0x7F010003
-			public const int fontProviderFetchStrategy = 2130771971;
-			
-			// aapt resource value: 0x7F010004
-			public const int fontProviderFetchTimeout = 2130771972;
-			
-			// aapt resource value: 0x7F010005
-			public const int fontProviderPackage = 2130771973;
-			
-			// aapt resource value: 0x7F010006
-			public const int fontProviderQuery = 2130771974;
-			
-			// aapt resource value: 0x7F010007
-			public const int fontStyle = 2130771975;
-			
-			// aapt resource value: 0x7F010008
-			public const int fontWeight = 2130771976;
-			
-			static Attribute()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Attribute()
-			{
-			}
-		}
-		
-		public partial class Boolean
-		{
-			
-			// aapt resource value: 0x7F020000
-			public const int abc_action_bar_embed_tabs = 2130837504;
-			
-			static Boolean()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Boolean()
-			{
-			}
-		}
-		
-		public partial class Color
-		{
-			
-			// aapt resource value: 0x7F030000
-			public const int notification_action_color_filter = 2130903040;
-			
-			// aapt resource value: 0x7F030001
-			public const int notification_icon_bg_color = 2130903041;
-			
-			// aapt resource value: 0x7F030002
-			public const int notification_material_background_media_default_color = 2130903042;
-			
-			// aapt resource value: 0x7F030003
-			public const int primary_text_default_material_dark = 2130903043;
-			
-			// aapt resource value: 0x7F030004
-			public const int ripple_material_light = 2130903044;
-			
-			// aapt resource value: 0x7F030005
-			public const int secondary_text_default_material_dark = 2130903045;
-			
-			// aapt resource value: 0x7F030006
-			public const int secondary_text_default_material_light = 2130903046;
-			
-			static Color()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Color()
-			{
-			}
-		}
-		
-		public partial class Dimension
-		{
-			
-			// aapt resource value: 0x7F040000
-			public const int compat_button_inset_horizontal_material = 2130968576;
-			
-			// aapt resource value: 0x7F040001
-			public const int compat_button_inset_vertical_material = 2130968577;
-			
-			// aapt resource value: 0x7F040002
-			public const int compat_button_padding_horizontal_material = 2130968578;
-			
-			// aapt resource value: 0x7F040003
-			public const int compat_button_padding_vertical_material = 2130968579;
-			
-			// aapt resource value: 0x7F040004
-			public const int compat_control_corner_material = 2130968580;
-			
-			// aapt resource value: 0x7F040005
-			public const int notification_action_icon_size = 2130968581;
-			
-			// aapt resource value: 0x7F040006
-			public const int notification_action_text_size = 2130968582;
-			
-			// aapt resource value: 0x7F040007
-			public const int notification_big_circle_margin = 2130968583;
-			
-			// aapt resource value: 0x7F040008
-			public const int notification_content_margin_start = 2130968584;
-			
-			// aapt resource value: 0x7F040009
-			public const int notification_large_icon_height = 2130968585;
-			
-			// aapt resource value: 0x7F04000A
-			public const int notification_large_icon_width = 2130968586;
-			
-			// aapt resource value: 0x7F04000B
-			public const int notification_main_column_padding_top = 2130968587;
-			
-			// aapt resource value: 0x7F04000C
-			public const int notification_media_narrow_margin = 2130968588;
-			
-			// aapt resource value: 0x7F04000D
-			public const int notification_right_icon_size = 2130968589;
-			
-			// aapt resource value: 0x7F04000E
-			public const int notification_right_side_padding_top = 2130968590;
-			
-			// aapt resource value: 0x7F04000F
-			public const int notification_small_icon_background_padding = 2130968591;
-			
-			// aapt resource value: 0x7F040010
-			public const int notification_small_icon_size_as_large = 2130968592;
-			
-			// aapt resource value: 0x7F040011
-			public const int notification_subtext_size = 2130968593;
-			
-			// aapt resource value: 0x7F040012
-			public const int notification_top_pad = 2130968594;
-			
-			// aapt resource value: 0x7F040013
-			public const int notification_top_pad_large_text = 2130968595;
-			
-			static Dimension()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Dimension()
-			{
-			}
-		}
-		
-		public partial class Drawable
-		{
-			
-			// aapt resource value: 0x7F050000
-			public const int icon = 2131034112;
-			
-			// aapt resource value: 0x7F050001
-			public const int notification_action_background = 2131034113;
-			
-			// aapt resource value: 0x7F050002
-			public const int notification_bg = 2131034114;
-			
-			// aapt resource value: 0x7F050003
-			public const int notification_bg_low = 2131034115;
-			
-			// aapt resource value: 0x7F050004
-			public const int notification_bg_low_normal = 2131034116;
-			
-			// aapt resource value: 0x7F050005
-			public const int notification_bg_low_pressed = 2131034117;
-			
-			// aapt resource value: 0x7F050006
-			public const int notification_bg_normal = 2131034118;
-			
-			// aapt resource value: 0x7F050007
-			public const int notification_bg_normal_pressed = 2131034119;
-			
-			// aapt resource value: 0x7F050008
-			public const int notification_icon_background = 2131034120;
-			
-			// aapt resource value: 0x7F050009
-			public const int notification_template_icon_bg = 2131034121;
-			
-			// aapt resource value: 0x7F05000A
-			public const int notification_template_icon_low_bg = 2131034122;
-			
-			// aapt resource value: 0x7F05000B
-			public const int notification_tile_bg = 2131034123;
-			
-			// aapt resource value: 0x7F05000C
-			public const int notify_panel_notification_icon_bg = 2131034124;
-			
-			static Drawable()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Drawable()
-			{
-			}
-		}
-		
-		public partial class Id
-		{
-			
-			// aapt resource value: 0x7F060000
-			public const int action0 = 2131099648;
-			
-			// aapt resource value: 0x7F060005
-			public const int actions = 2131099653;
-			
-			// aapt resource value: 0x7F060001
-			public const int action_container = 2131099649;
-			
-			// aapt resource value: 0x7F060002
-			public const int action_divider = 2131099650;
-			
-			// aapt resource value: 0x7F060003
-			public const int action_image = 2131099651;
-			
-			// aapt resource value: 0x7F060004
-			public const int action_text = 2131099652;
-			
-			// aapt resource value: 0x7F060006
-			public const int altitude = 2131099654;
-			
-			// aapt resource value: 0x7F060007
-			public const int async = 2131099655;
-			
-			// aapt resource value: 0x7F060008
-			public const int blocking = 2131099656;
-			
-			// aapt resource value: 0x7F060009
-			public const int cancel_action = 2131099657;
-			
-			// aapt resource value: 0x7F06000A
-			public const int chronometer = 2131099658;
-			
-			// aapt resource value: 0x7F06000B
-			public const int device_picker = 2131099659;
-			
-			// aapt resource value: 0x7F06000C
-			public const int end_padder = 2131099660;
-			
-			// aapt resource value: 0x7F06000D
-			public const int forever = 2131099661;
-			
-			// aapt resource value: 0x7F06000E
-			public const int icon = 2131099662;
-			
-			// aapt resource value: 0x7F06000F
-			public const int icon_group = 2131099663;
-			
-			// aapt resource value: 0x7F060010
-			public const int info = 2131099664;
-			
-			// aapt resource value: 0x7F060011
-			public const int italic = 2131099665;
-			
-			// aapt resource value: 0x7F060012
-			public const int latitude = 2131099666;
-			
-			// aapt resource value: 0x7F060013
-			public const int line1 = 2131099667;
-			
-			// aapt resource value: 0x7F060014
-			public const int line3 = 2131099668;
-			
-			// aapt resource value: 0x7F060015
-			public const int longitude = 2131099669;
-			
-			// aapt resource value: 0x7F060016
-			public const int media_actions = 2131099670;
-			
-			// aapt resource value: 0x7F060017
-			public const int normal = 2131099671;
-			
-			// aapt resource value: 0x7F060018
-			public const int notification_background = 2131099672;
-			
-			// aapt resource value: 0x7F060019
-			public const int notification_main_column = 2131099673;
-			
-			// aapt resource value: 0x7F06001A
-			public const int notification_main_column_container = 2131099674;
-			
-			// aapt resource value: 0x7F06001B
-			public const int output = 2131099675;
-			
-			// aapt resource value: 0x7F06001C
-			public const int right_icon = 2131099676;
-			
-			// aapt resource value: 0x7F06001D
-			public const int right_side = 2131099677;
-			
-			// aapt resource value: 0x7F06001E
-			public const int startButton = 2131099678;
-			
-			// aapt resource value: 0x7F06001F
-			public const int status_bar_latest_event_content = 2131099679;
-			
-			// aapt resource value: 0x7F060020
-			public const int stopButton = 2131099680;
-			
-			// aapt resource value: 0x7F060021
-			public const int tag_transition_group = 2131099681;
-			
-			// aapt resource value: 0x7F060022
-			public const int text = 2131099682;
-			
-			// aapt resource value: 0x7F060023
-			public const int text2 = 2131099683;
-			
-			// aapt resource value: 0x7F060024
-			public const int time = 2131099684;
-			
-			// aapt resource value: 0x7F060025
-			public const int title = 2131099685;
-			
-			static Id()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Id()
-			{
-			}
-		}
-		
-		public partial class Integer
-		{
-			
-			// aapt resource value: 0x7F070000
-			public const int cancel_button_image_alpha = 2131165184;
-			
-			// aapt resource value: 0x7F070001
-			public const int status_bar_notification_info_maxnum = 2131165185;
-			
-			static Integer()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Integer()
-			{
-			}
-		}
-		
-		public partial class Layout
-		{
-			
-			// aapt resource value: 0x7F080000
-			public const int Main = 2131230720;
-			
-			// aapt resource value: 0x7F080001
-			public const int notification_action = 2131230721;
-			
-			// aapt resource value: 0x7F080002
-			public const int notification_action_tombstone = 2131230722;
-			
-			// aapt resource value: 0x7F080003
-			public const int notification_media_action = 2131230723;
-			
-			// aapt resource value: 0x7F080004
-			public const int notification_media_cancel_action = 2131230724;
-			
-			// aapt resource value: 0x7F080005
-			public const int notification_template_big_media = 2131230725;
-			
-			// aapt resource value: 0x7F080006
-			public const int notification_template_big_media_custom = 2131230726;
-			
-			// aapt resource value: 0x7F080007
-			public const int notification_template_big_media_narrow = 2131230727;
-			
-			// aapt resource value: 0x7F080008
-			public const int notification_template_big_media_narrow_custom = 2131230728;
-			
-			// aapt resource value: 0x7F080009
-			public const int notification_template_custom_big = 2131230729;
-			
-			// aapt resource value: 0x7F08000A
-			public const int notification_template_icon_group = 2131230730;
-			
-			// aapt resource value: 0x7F08000B
-			public const int notification_template_lines_media = 2131230731;
-			
-			// aapt resource value: 0x7F08000C
-			public const int notification_template_media = 2131230732;
-			
-			// aapt resource value: 0x7F08000D
-			public const int notification_template_media_custom = 2131230733;
-			
-			// aapt resource value: 0x7F08000E
-			public const int notification_template_part_chronometer = 2131230734;
-			
-			// aapt resource value: 0x7F08000F
-			public const int notification_template_part_time = 2131230735;
-			
-			static Layout()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Layout()
-			{
-			}
-		}
-		
-		public partial class String
-		{
-			
-			// aapt resource value: 0x7F090000
-			public const int app_name = 2131296256;
-			
-			// aapt resource value: 0x7F090001
-			public const int status_bar_notification_info_overflow = 2131296257;
-			
-			static String()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private String()
-			{
-			}
-		}
-		
-		public partial class Style
-		{
-			
-			// aapt resource value: 0x7F0A0000
-			public const int TextAppearance_Compat_Notification = 2131361792;
-			
-			// aapt resource value: 0x7F0A0001
-			public const int TextAppearance_Compat_Notification_Info = 2131361793;
-			
-			// aapt resource value: 0x7F0A0002
-			public const int TextAppearance_Compat_Notification_Info_Media = 2131361794;
-			
-			// aapt resource value: 0x7F0A0003
-			public const int TextAppearance_Compat_Notification_Line2 = 2131361795;
-			
-			// aapt resource value: 0x7F0A0004
-			public const int TextAppearance_Compat_Notification_Line2_Media = 2131361796;
-			
-			// aapt resource value: 0x7F0A0005
-			public const int TextAppearance_Compat_Notification_Media = 2131361797;
-			
-			// aapt resource value: 0x7F0A0006
-			public const int TextAppearance_Compat_Notification_Time = 2131361798;
-			
-			// aapt resource value: 0x7F0A0007
-			public const int TextAppearance_Compat_Notification_Time_Media = 2131361799;
-			
-			// aapt resource value: 0x7F0A0008
-			public const int TextAppearance_Compat_Notification_Title = 2131361800;
-			
-			// aapt resource value: 0x7F0A0009
-			public const int TextAppearance_Compat_Notification_Title_Media = 2131361801;
-			
-			// aapt resource value: 0x7F0A000A
-			public const int Widget_Compat_NotificationActionContainer = 2131361802;
-			
-			// aapt resource value: 0x7F0A000B
-			public const int Widget_Compat_NotificationActionText = 2131361803;
-			
-			static Style()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Style()
-			{
-			}
-		}
-		
-		public partial class Styleable
-		{
-			
-			// aapt resource value: { 0x7F010001,0x7F010002,0x7F010003,0x7F010004,0x7F010005,0x7F010006 }
-			public static int[] FontFamily = new int[] {
-					2130771969,
-					2130771970,
-					2130771971,
-					2130771972,
-					2130771973,
-					2130771974};
-			
-			// aapt resource value: { 0x1010532,0x1010533,0x101053F,0x7F010000,0x7F010007,0x7F010008 }
-			public static int[] FontFamilyFont = new int[] {
-					16844082,
-					16844083,
-					16844095,
-					2130771968,
-					2130771975,
-					2130771976};
-			
-			// aapt resource value: 0
-			public const int FontFamilyFont_android_font = 0;
-			
-			// aapt resource value: 2
-			public const int FontFamilyFont_android_fontStyle = 2;
-			
-			// aapt resource value: 1
-			public const int FontFamilyFont_android_fontWeight = 1;
-			
-			// aapt resource value: 3
-			public const int FontFamilyFont_font = 3;
-			
-			// aapt resource value: 4
-			public const int FontFamilyFont_fontStyle = 4;
-			
-			// aapt resource value: 5
-			public const int FontFamilyFont_fontWeight = 5;
-			
-			// aapt resource value: 0
-			public const int FontFamily_fontProviderAuthority = 0;
-			
-			// aapt resource value: 1
-			public const int FontFamily_fontProviderCerts = 1;
-			
-			// aapt resource value: 2
-			public const int FontFamily_fontProviderFetchStrategy = 2;
-			
-			// aapt resource value: 3
-			public const int FontFamily_fontProviderFetchTimeout = 3;
-			
-			// aapt resource value: 4
-			public const int FontFamily_fontProviderPackage = 4;
-			
-			// aapt resource value: 5
-			public const int FontFamily_fontProviderQuery = 5;
-			
-			static Styleable()
-			{
-				global::Android.Runtime.ResourceIdManager.UpdateIdValues();
-			}
-			
-			private Styleable()
-			{
-			}
-		}
-	}
-}
-#pragma warning restore 1591
diff --git a/src/SampleApp.Droid/Resources/layout/Main.axml b/src/SampleApp.Droid/Resources/layout/activity_main.xml
similarity index 96%
rename from src/SampleApp.Droid/Resources/layout/Main.axml
rename to src/SampleApp.Droid/Resources/layout/activity_main.xml
index c634a7d..7a58ebb 100644
--- a/src/SampleApp.Droid/Resources/layout/Main.axml
+++ b/src/SampleApp.Droid/Resources/layout/activity_main.xml
@@ -3,7 +3,7 @@
     android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
-    <TextView
+    <TextView 
         android:id="@+id/longitude"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
@@ -38,7 +38,7 @@
         android:layout_height="wrap_content">
         <Button
             android:id="@+id/startButton"
-            android:layout_width="wrap_content"
+        android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:text="start" />
         <Button
diff --git a/src/SampleApp.Droid/Resources/values/Strings.xml b/src/SampleApp.Droid/Resources/values/Strings.xml
index 5867cb0..f4a5e58 100644
--- a/src/SampleApp.Droid/Resources/values/Strings.xml
+++ b/src/SampleApp.Droid/Resources/values/Strings.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-  <string name="app_name">NMEA Parser SampleApp</string>
-</resources>
\ No newline at end of file
+<resources>
+    <string name="app_name">NMEA Parser SampleApp</string>
+</resources>
diff --git a/src/SampleApp.Droid/Resources/values/ic_launcher_background.xml b/src/SampleApp.Droid/Resources/values/ic_launcher_background.xml
new file mode 100644
index 0000000..6ec24e6
--- /dev/null
+++ b/src/SampleApp.Droid/Resources/values/ic_launcher_background.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#2C3E50</color>
+</resources>
\ No newline at end of file
diff --git a/src/SampleApp.Droid/SampleApp.Droid.csproj b/src/SampleApp.Droid/SampleApp.Droid.csproj
index 1b8644c..c127b02 100644
--- a/src/SampleApp.Droid/SampleApp.Droid.csproj
+++ b/src/SampleApp.Droid/SampleApp.Droid.csproj
@@ -1,104 +1,22 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProductVersion>8.0.30703</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
-    <ProjectGuid>{48540D33-4349-42D2-9D49-144A7049565A}</ProjectGuid>
-    <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
-    <OutputType>Library</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>SampleApp.Droid</RootNamespace>
-    <AssemblyName>SampleApp.Droid</AssemblyName>
-    <FileAlignment>512</FileAlignment>
-    <AndroidApplication>True</AndroidApplication>
-    <AndroidResgenFile>Resources\Resource.Designer.cs</AndroidResgenFile>
-    <AndroidResgenClass>Resource</AndroidResgenClass>
-    <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
-    <TargetFrameworkVersion>v8.1</TargetFrameworkVersion>
-    <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
-    <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
-    <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
-  </PropertyGroup>
-  <PropertyGroup>
-    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <DebugSymbols>True</DebugSymbols>
-    <DebugType>Full</DebugType>
-    <Optimize>False</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <AndroidUseSharedRuntime>True</AndroidUseSharedRuntime>
-    <AndroidLinkMode>None</AndroidLinkMode>
-    <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <DebugSymbols>True</DebugSymbols>
-    <DebugType>PdbOnly</DebugType>
-    <Optimize>True</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <AndroidManagedSymbols>true</AndroidManagedSymbols>
-    <AndroidUseSharedRuntime>true</AndroidUseSharedRuntime>
-    <AndroidLinkMode>SdkOnly</AndroidLinkMode>
-    <EmbedAssembliesIntoApk>false</EmbedAssembliesIntoApk>
+    <TargetFramework>net7.0-android</TargetFramework>
+    <SupportedOSPlatformVersion>23</SupportedOSPlatformVersion>
+    <OutputType>Exe</OutputType>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <ApplicationId>com.companyname.SampleApp.Droid</ApplicationId>
+    <ApplicationVersion>1</ApplicationVersion>
+    <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="System" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Core" />
-    <Reference Include="Mono.Android" />
+    <None Remove="Resources\drawable\icon.png" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="MainActivity.cs" />
-    <Compile Include="Resources\Resource.Designer.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
+    <PackageReference Include="Xamarin.AndroidX.Core" Version="1.10.1.2" />
   </ItemGroup>
+
   <ItemGroup>
-    <None Include="Properties\AndroidManifest.xml" />
+    <ProjectReference Include="..\NmeaParser\NmeaParser.csproj" />
   </ItemGroup>
-  <ItemGroup>
-    <AndroidResource Include="Resources\layout\Main.axml">
-      <SubType>Designer</SubType>
-    </AndroidResource>
-    <AndroidResource Include="Resources\values\Strings.xml" />
-  </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Assets\" />
-    <Folder Include="Resources\mipmap-hdpi\" />
-    <Folder Include="Resources\mipmap-mdpi\" />
-    <Folder Include="Resources\mipmap-xhdpi\" />
-    <Folder Include="Resources\mipmap-xxhdpi\" />
-    <Folder Include="Resources\mipmap-xxxhdpi\" />
-  </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="Xamarin.Android.Support.v4">
-      <Version>27.0.2</Version>
-    </PackageReference>
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\NmeaParser\NmeaParser.csproj">
-      <Project>{1adc3666-1ddb-48c4-9811-1e58b6d09a7c}</Project>
-      <Name>NmeaParser</Name>
-    </ProjectReference>
-  </ItemGroup>
-  <ItemGroup>
-    <AndroidResource Include="Resources\drawable\icon.png" />
-  </ItemGroup>
-  <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-		Other similar extension points exist, see Microsoft.Common.targets.
-		<Target Name="BeforeBuild">
-		</Target>
-		<Target Name="AfterBuild">
-		</Target>
-	-->
 </Project>
\ No newline at end of file