如何强制 Windows Phone 8 应用程序以浅色主题运行

Question

我开发了一个 windows phone 应用程序，我希望该应用程序以浅色主题运行，而不管用户设置了什么。意味着有没有办法为 windows phone 8 应用程序设置默认主题。

Answer 1

您可以使用 Jeff Wilcox 的ThemeManager

将它添加到您的项目中（有一个NuGet package 可用）并从App() 构造函数中调用它。

public App()
{
    // Global handler for uncaught exceptions.
    UnhandledException += Application_UnhandledException;

    // Standard Silverlight initialization
    InitializeComponent();

    // Phone-specific initialization
    InitializePhoneApplication();

    ThemeManager.ToLightTheme();

    // Other code that might be here already...
}

您可以找到用法示例on his website。

Answer 2

对于 Windows phone 8.1，您可以使用：

<Application
    x:Class="App26.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    RequestedTheme="Light"
    xmlns:local="using:App26">
</Application>

或者

public App()
    {
        this.RequestedTheme = ApplicationTheme.Light;

        this.InitializeComponent();
        this.Suspending += this.OnSuspending;
    }

来源：Windows phone 8 How to be always on one theme even if phone's theme changed

Answer 3

来自http://developergoodies.blogspot.nl/2012/10/force-windows-phone-theme.html

（经过测试和验证；获取主题；从资源中复制以防止将来无法访问）

回答

当 UI 专为深色主题设计时，它在浅色主题上看起来不太好，反之亦然。

为防止这种情况，应用程序可以强制使用默认的深色或浅色主题。

在应用程序类的构造函数中放置这段代码来强制使用深色主题：

if ((Visibility)Application.Current.Resources["PhoneLightThemeVisibility"] == Visibility.Visible) MergeCustomColors("/Themes/DarkStyles.xaml");

或者这个代码强制浅色主题：

if ((Visibility)Application.Current.Resources["PhoneDarkThemeVisibility"] == Visibility.Visible) MergeCustomColors("/Themes/LightStyles.xaml");

你项目中的任何地方都可以使用这个方法：

private void MergeCustomColors(String Theme)
{
    ResourceDictionary Dictionaries = new ResourceDictionary();
    String source = String.Format(Theme);
    var themeStyles = new ResourceDictionary { Source = new Uri(source, UriKind.Relative) };
    Dictionaries.MergedDictionaries.Add(themeStyles);
    ResourceDictionary appResources = Current.Resources;
    foreach (DictionaryEntry entry in Dictionaries.MergedDictionaries[0])
    {
        SolidColorBrush ColorBrush = entry.Value as SolidColorBrush;
        SolidColorBrush ExistingBrush = appResources[entry.Key] as SolidColorBrush;
        if (ExistingBrush != null && ColorBrush != null) { ExistingBrush.Color = ColorBrush.Color; }
    }
}

代码假定项目在名为 Themes 的文件夹中包含文件 DarkStyles.xaml 和 LightStyles.xaml。

Answer 4

在您的应用构造函数中调用此方法

private void LightTheme()
    {
        ((SolidColorBrush)Resources["PhoneRadioCheckBoxCheckBrush"]).Color = ((SolidColorBrush)Resources["PhoneRadioCheckBoxBorderBrush"]).Color = ((SolidColorBrush)Resources["PhoneForegroundBrush"]).Color = Color.FromArgb(0xDE, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneBackgroundBrush"]).Color = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
        ((SolidColorBrush)Resources["PhoneContrastForegroundBrush"]).Color = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
        ((SolidColorBrush)Resources["PhoneContrastBackgroundBrush"]).Color = Color.FromArgb(0xDE, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneDisabledBrush"]).Color = Color.FromArgb(0x4D, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneProgressBarBackgroundBrush"]).Color = Color.FromArgb(0x19, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextCaretBrush"]).Color = Color.FromArgb(0xDE, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextBoxBrush"]).Color = Color.FromArgb(0x26, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextBoxForegroundBrush"]).Color = Color.FromArgb(0xDE, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextBoxEditBackgroundBrush"]).Color = Color.FromArgb(0x00, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextBoxReadOnlyBrush"]).Color = Color.FromArgb(0x2E, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneSubtleBrush"]).Color = Color.FromArgb(0x66, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextBoxSelectionForegroundBrush"]).Color = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
        ((SolidColorBrush)Resources["PhoneButtonBasePressedForegroundBrush"]).Color = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
        ((SolidColorBrush)Resources["PhoneTextHighContrastBrush"]).Color = Color.FromArgb(0xDE, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextMidContrastBrush"]).Color = Color.FromArgb(0x73, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneTextLowContrastBrush"]).Color = Color.FromArgb(0x40, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneSemitransparentBrush"]).Color = Color.FromArgb(0xAA, 0xFF, 0xFF, 0xFF);

        ((SolidColorBrush)Resources["PhoneInactiveBrush"]).Color = Color.FromArgb(0x33, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneInverseInactiveBrush"]).Color = Color.FromArgb(0xFF, 0xE5, 0xE5, 0xE5);
        ((SolidColorBrush)Resources["PhoneInverseBackgroundBrush"]).Color = Color.FromArgb(0xFF, 0xDD, 0xDD, 0xDD);
        ((SolidColorBrush)Resources["PhoneBorderBrush"]).Color = Color.FromArgb(0x99, 0x00, 0x00, 0x00);
        ((SolidColorBrush)Resources["PhoneAccentBrush"]).Color = Color.FromArgb(0xFF, 0x00, 73, 99);
        ((SolidColorBrush)Resources["PhoneChromeBrush"]).Color = Color.FromArgb(0xFF, 0xDD, 0xDD, 0xDD);
    }