Xamarin Forms 对不同的构建配置使用不同的资源字典 [英] Xamarin Forms use different resource dictionaries for different build configurations

问题描述

我正在尝试在我的 Xamarin Forms 应用程序中为不同的构建配置(调试、发布等...)加载不同的资源字典.

I'm trying to load different resource dictionaries for different build configurations (Debug, Release,etc ....) in my Xamarin Forms app.

我尝试在运行时设置源属性，但它不起作用(为无效的 uri 抛出错误)

I have tried setting the source property at runtime, but it didn't work (throw an error for invalid uri)

public App()
{
        InitializeComponent();
        Device.SetFlags(new string[] { "Expander_Experimental", "Shapes_Experimental" });
        mainResourceDict.Source = new Uri("ResourceDictionaries/WebtrieveRD.xaml");
}

我找不到在 XAML 中添加编译器指令条件的方法.有没有其他方法可以做到这一点?

I couldn't find a way to add compiler directive conditions in XAML. Is there any other way this can be done?

推荐答案

好的，所以我发现 ResourceDictionary 的源只能从 XAML 设置(根据 Xamarin 文档).但它有一个名为 SetAndLoadSource 的方法，它被标记为 供 Xamarin 平台内部使​​用，但仍可用于从后面的代码动态设置源.这是一个用法示例:

Okay, so I figured out that the source for ResourceDictionary can be set only from XAML (As per Xamarin documentation). But it has a method called SetAndLoadSource which is marked as For internal use by Xamarin Platform but can still be used to set the source dynamically from the code behind. Here's a usage example:

#if DEBUG
            var source = new Uri("ResourceDictionaries/DebugRD.xaml", UriKind.RelativeOrAbsolute);
            mainResourceDict.SetAndLoadSource(source, "ResourceDictionaries/DebugRD.xaml", this.GetType().GetTypeInfo().Assembly, null);
#endif

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