在Android中以编程方式设置主题

Question

I've seen this done before in Android so I know it's possible. I want to add a preference that changes the app theme using a listPreference. I've been fiddling around with some XML code but I'm stuck on the Java part.

Here is the listPreference in my settings.xml file:

<ListPreference
        android:entries="@array/Theme"
        android:entryValues="@array/themeAlias"
        android:key="theme_chooser"
        android:title="Theme"
        android:summary="Change the theme of the main activity." />

And here is my string arrays in my array.xml file:

<string-array name="Theme">
        <item>Default Theme</item>
        <item>Holo Light</item>
</string-array>
<string-array name="themeAlias">
        <item>"default"</item>
        <item>"light"</item>
</string-array>

Now here is some psuedocode that I don't know how to write into actual code:

Find the listPreference
   if preference is equal to default
       set the main activity's theme to custom a theme
   else
       set the theme to a standard light theme

I have done about 20 Google searches for this and all I get is a bunch of theming apps and blog posts about how to theme your android phone like a boss...I want to have users theme my app like a boss!

Thanks in advance,

Andrew

Answer 1

请查看此答案 ，该答案建议为基本活动设置主题，该主题将由您的所有应用活动扩展。