Add MAUI example for mobile targets

mobile/examples/Maui/MauiVisionSample/MauiVisionSample.sln

@@ -0,0 +1,27 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31611.283
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MauiVisionSample", "MauiVisionSample\MauiVisionSample.csproj", "{B181D00F-FFC0-489C-A59B-27665CD58015}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B181D00F-FFC0-489C-A59B-27665CD58015}.Release|Any CPU.Deploy.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {61F7FB11-1E47-470C-91E2-47F8143E1572}
+	EndGlobalSection
+EndGlobal

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/App.xaml

@@ -0,0 +1,14 @@
+<?xml version = "1.0" encoding = "UTF-8" ?>
+<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:local="clr-namespace:MauiVisionSample"
+             x:Class="MauiVisionSample.App">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Resources/Styles/Colors.xaml" />
+                <ResourceDictionary Source="Resources/Styles/Styles.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/App.xaml.cs

@@ -0,0 +1,11 @@
+namespace MauiVisionSample;
+
+public partial class App : Application
+{
+	public App()
+	{
+		InitializeComponent();
+
+		MainPage = new AppShell();
+	}
+}

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/AppShell.xaml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Shell
+    x:Class="MauiVisionSample.AppShell"
+    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:local="clr-namespace:MauiVisionSample"
+    Shell.FlyoutBehavior="Disabled">
+
+    <ShellContent
+        Title="Home"
+        ContentTemplate="{DataTemplate local:MainPage}"
+        Route="MainPage" />
+
+</Shell>

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/AppShell.xaml.cs

@@ -0,0 +1,9 @@
+namespace MauiVisionSample;
+
+public partial class AppShell : Shell
+{
+	public AppShell()
+	{
+		InitializeComponent();
+	}
+}

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/ExecutionProviders.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+namespace MauiVisionSample
+{
+    public enum ExecutionProviders
+    {
+        CPU,   // CPU execution provider is always available by default
+        NNAPI, // NNAPI is available on Android
+        CoreML // CoreML is available on iOS/macOS
+    }
+}

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/IVisionSample.cs

@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System.Threading.Tasks;
+
+namespace MauiVisionSample
+{
+    public interface IVisionSample
+    {
+        string Name { get; }
+        string ModelName { get; }
+        Task InitializeAsync();
+        Task UpdateExecutionProviderAsync(ExecutionProviders executionProvider);
+        Task<ImageProcessingResult> ProcessImageAsync(byte[] image);
+    }
+}

mobile/examples/Maui/MauiVisionSample/MauiVisionSample/MainPage.xaml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="MauiVisionSample.MainPage">
+
+    <Grid RowSpacing="0" ColumnSpacing="0">
+
+        <Grid.RowDefinitions>
+            <RowDefinition Height="50" />
+            <RowDefinition Height="50" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="50" />
+            <RowDefinition Height="50" />
+            <RowDefinition Height="50" />
+        </Grid.RowDefinitions>
+
+        <Picker
+            x:Name="Models"
+            HorizontalTextAlignment="Center"
+            Grid.Row="0"
+            Margin="5,5,5,5" />
+
+        <Picker
+            x:Name="ExecutionProviderOptions"
+            HorizontalTextAlignment="Center"
+            Grid.Row="1"
+            Margin="5,0,5,5" />
+
+        <Grid Grid.Row="2" Margin="20" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
+            <Grid.RowDefinitions>
+                <RowDefinition Height="*" />
+                <RowDefinition Height="Auto" />
+            </Grid.RowDefinitions>
+
+            <Image
+                x:Name="OutputImage"
+                Grid.Row="0"
+                Aspect="AspectFit"
+                HorizontalOptions="FillAndExpand"
+                VerticalOptions="FillAndExpand" />
+
+            <Label x:Name="Caption"
+                   Grid.Row="1"
+                   Margin="0,20,0,0"
+                   VerticalTextAlignment="Start"
+                   HorizontalOptions="StartAndExpand"
+                   VerticalOptions="StartAndExpand" />
+        </Grid>
+
+        <Button
+            x:Name="SamplePhotoButton"
+            Grid.Row="3"
+            Text="Sample"
+            Clicked="AcquireButton_Clicked" />
+
+        <Button
+            x:Name="PickPhotoButton"
+            Grid.Row="4"
+            Text="Pick"
+            Clicked="AcquireButton_Clicked" />
+
+        <Button
+            x:Name="TakePhotoButton"
+            Grid.Row="5"
+            Text="Capture"
+            Clicked="AcquireButton_Clicked" />
+
+        <ActivityIndicator
+            x:Name="BusyIndicator"
+            Grid.RowSpan="6"
+            HorizontalOptions="CenterAndExpand"
+            VerticalOptions="CenterAndExpand"
+            Color="Black" />
+    </Grid>
+
+
+</ContentPage>