dotnet 解决 Avalonia 在 OpenKylin 麒麟系统运行找不到默认字体启动失败
<p>本文的解决方法由 walterlv 提供，我只是代为记录的工具人</p><p>在 OpenKylin 系统启动 Avalonia 应用失败，异常信息是 System.InvalidOperationException: Default font family name can't be null or empty.</p>
<p>启动失败的异常堆栈信息如下</p>
<pre><code>System.InvalidOperationException: Default font family name can't be null or empty.
at Avalonia.Media.FontManager..ctor(IFontManagerImpl platformImpl)
at Avalonia.Media.FontManager.get_Current()
...
</code></pre>
<p>修复方法，添加默认字体配置，代码如下</p>
<pre><code class="language-csharp"> appBuilder.With(new FontManagerOptions()
{
DefaultFamilyName = "Noto Sans CJK SC",
FontFallbacks =
[
new FontFallback { FontFamily = "文泉驿正黑" },
new FontFallback { FontFamily = "DejaVu Sans" },
],
});
</code></pre>
<p>在我代码里面，加上之后的 Program.cs 代码如下。以下代码使用的是 11.0.6 的 Avalonia 版本</p>
<pre><code class="language-csharp">internal class Program
{
// Initialization code. Don't use any Avalonia, third-party APIs or any
// SynchronizationContext-reliant code before AppMain is called: things aren't initialized
// yet and stuff might break.
public static void Main(string[] args) =>
BuildAvaloniaApp()
.StartWithClassicDesktopLifetime(args);
// Avalonia configuration, don't remove; also used by visual designer.
public static AppBuilder BuildAvaloniaApp()
=> AppBuilder.Configure<App>()
.UsePlatformDetect()
.WithInterFont()
.LogToTrace()
// 修复麒麟丢失字体
.With(new FontManagerOptions()
{
DefaultFamilyName = "Noto Sans CJK SC",
FontFallbacks =
[
new FontFallback { FontFamily = "文泉驿正黑" },
new FontFallback { FontFamily = "DejaVu Sans" },
],
});
}
</code></pre>
<p>参考文档：</p>
<ul>
<li>OpenKylin上运行Avalonia应用 - louzi - 博客园</li>
<li>https://github.com/AvaloniaUI/Avalonia/issues/16612</li>
</ul>
</div>
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