How to allow users to choose themes in android list view?

I have a listview with two labels, title and subtitle. I want to have dark and light background as user options. Title has textAppearanceMedium and subtitle has textAppearanceSmall. I want the style, MyTheme.Dark to have white color text and MyTheme.开发者_如何学GoLight to have black color text. Is there a way to define multiple textAppearance attribute for the same TextView widget?

<style name="MyTheme.Dark">
    <item name="android:windowBackground">@color/black</item>
    <item name="android:colorBackground">@color/black</item>
    <item name="android:background">@color/black</item>
    <item name="android:divider">@color/white</item>
        --cannot put textAppearance here since it is different for title and subtitle
    </style>

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For future reference...

In values/themes.xml:

<style name="MyTheme.Dark">
    <item name="textColorTitle">@color/white</item>
</style>
<style name="MyTheme.Light">
    <item name="textColorTitle">@color/black</item>
</style>

In values/attrs.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr
        name="textColorTitle"
        format="reference|color" />
</resources>

In layout/my_list_row.xml, use textColorTitle value for your text color, like this:

android:textColor="?textColorTitle"

Let me know if it doesn't work. It works for me.

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I'm a beginner with Android myself and I'm not sure if I'm not making an ass of myself here, but why don't you use the android:textColor property?

<style name="MyTheme.Dark">
    <item name="android:windowBackground">@color/black</item>
    <item name="android:colorBackground">@color/black</item>
    <item name="android:background">@color/black</item>
    <item name="android:divider">@color/white</item>
    <item name="android:textColor">@color/white</item>
</style>

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I think best way is to have different layout xml for different colors and themes. Load the layout xml based on user choice. I do not like this but I have not found any alternatives.