C#•14mo ago

❔ avalonia cross platform issue

Im trying to port my avalonia project to android, but it just shows a white screen, android code is based on the hello world sample and the project structure was re-shaped around the "Main, Main.Desktop, Main.Android" style of project management

5 Replies

Trace•14mo ago

csproj.android:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0-android</TargetFramework>
    <SupportedOSPlatformVersion>26</SupportedOSPlatformVersion>
    <Nullable>enable</Nullable>
    <ApplicationId>com.TraceEntertains.installer</ApplicationId>
    <ApplicationVersion>1</ApplicationVersion>
    <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
    <AndroidPackageFormat>apk</AndroidPackageFormat>
    <AndroidEnableProfiledAot>False</AndroidEnableProfiledAot>
  </PropertyGroup>

    <ItemGroup>
        <AndroidResource Include="..\installer\Assets\window_icon.png">
            <Link>Resources\drawable\Icon.png</Link>
        </AndroidResource>
    </ItemGroup>
    
  <ItemGroup>
    <PackageReference Include="Avalonia.Android" Version="11.0.0-preview8" />
    <PackageReference Include="Avalonia.ReactiveUI" Version="11.0.0-preview8" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\installer\installer.csproj" />
  </ItemGroup>
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0-android</TargetFramework>
    <SupportedOSPlatformVersion>26</SupportedOSPlatformVersion>
    <Nullable>enable</Nullable>
    <ApplicationId>com.TraceEntertains.installer</ApplicationId>
    <ApplicationVersion>1</ApplicationVersion>
    <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
    <AndroidPackageFormat>apk</AndroidPackageFormat>
    <AndroidEnableProfiledAot>False</AndroidEnableProfiledAot>
  </PropertyGroup>

    <ItemGroup>
        <AndroidResource Include="..\installer\Assets\window_icon.png">
            <Link>Resources\drawable\Icon.png</Link>
        </AndroidResource>
    </ItemGroup>
    
  <ItemGroup>
    <PackageReference Include="Avalonia.Android" Version="11.0.0-preview8" />
    <PackageReference Include="Avalonia.ReactiveUI" Version="11.0.0-preview8" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\installer\installer.csproj" />
  </ItemGroup>
</Project>

main csproj

Trace•14mo ago

csproj.xml

Trace•14mo ago

app.axaml

<Application
    xmlns="https://github.com/avaloniaui" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="CTGP7InstallerSharp.App">
  <Application.Styles>
    <FluentTheme />
  </Application.Styles>
</Application>

<Application
    xmlns="https://github.com/avaloniaui" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="CTGP7InstallerSharp.App">
  <Application.Styles>
    <FluentTheme />
  </Application.Styles>
</Application>

app.axaml.cs

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;

namespace installer
{
    public class App : Application
    {
        public override void Initialize()
        {
            AvaloniaXamlLoader.Load(this);
        }

        public override void OnFrameworkInitializationCompleted()
        {
            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
                desktop.MainWindow = new MainWindow();
            base.OnFrameworkInitializationCompleted();
        }
    }
}

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;

namespace installer
{
    public class App : Application
    {
        public override void Initialize()
        {
            AvaloniaXamlLoader.Load(this);
        }

        public override void OnFrameworkInitializationCompleted()
        {
            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
                desktop.MainWindow = new MainWindow();
            base.OnFrameworkInitializationCompleted();
        }
    }
}

Klarth•14mo ago

if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
  desktop.MainWindow = new MainWindow();

if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
  desktop.MainWindow = new MainWindow();

Android isn't a desktop app. It's an ISingleViewApplicationLifetime at best...you still don't control the window, AFAIK, but I haven't used Avalonia with mobile. I would check the samples in their repo or maybe dig into how Wieslaw has his stuff setup. eg. https://github.com/wieslawsoltes/ChatGPT/blob/main/src/ChatGPT.UI.Android/SplashActivity.cs

Accord•14mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ avalonia cross platform issue