java - 更改在 colors.xml 中设置的 styles.xml 中的颜色

Question

我在我的 colors.xml 中设置了自定义颜色，如下所示，但是，是否可以按照以下更改/更新我的 styles.xml 主题节点中的颜色；

colors.xml

<resources>
    <color name="themeBackground">#000000</color>
    <color name="darkColor">#000000</color>
    <color name="lightColor">#ffffff</color>
<resources>

并在我的 v21\styles.xml 中按照以下内容手动更改

//used in activity
onCreate().setTheme(R.style.DarkTheme);

v21\styles.xml

<style name="DarkTheme">
    <!-- change themeBackground manually here -->
    <item name="themeBackground">@color/darkColor</item>
</style>

<style name="LightTheme">
    <!-- change themeBackground manually here -->
    <item name="themeBackground">@color/lightColor</item>
</style>

我已经试过了，但运气不好，因为似乎只能更改 android 值，即

<item name="colorPrimary">@color/lightColor</item>

Answer 1

使用 values\themes.xml & values\attrs.xml + values\colors.xml

*Ensure any themes created in values\styles.xml are not duplicated in themes.xml (i.e same key name <style name="LightLoginThemeV3">)*

添加到 values\colors.xml (应该已经存在...)

<!-- light Theme colors -->
<color name="lightBackgroundPrimaryV3">@color/white</color>
<color name="lightBackgroundSecondaryV3">@color/lighter_grey</color>
<color name="lightBackgroundAltV3">@color/lighter_grey</color>
<color name="lightBackgroundAltAlphaV3">#809E9E9E</color>
<color name="lightBackgroundLightV3">#80FFFFFF</color>
<color name="lightThemePrimaryColourV3">#01aac4</color>
<color name="lightThemeSecondaryColourV3">#025f8b</color>
<color name="lightThemeDarkPrimaryColourV3">@color/white</color>
<color name="lightThemeDarkSecondaryColourV3">@color/lighter_grey</color>

<!-- dark Theme colors -->
<color name="darkBackgroundPrimaryV3">#241e45</color>
<color name="darkBackgroundSecondaryV3">#2f2856</color>
<color name="darkBackgroundAltV3">#483e81</color>
<color name="darkBackgroundAltAlphaV3">#80483e81</color>
<color name="darkBackgroundLightV3">#f4f3f3</color>
<color name="darkThemePrimaryColourV3">#01aac4</color>
<color name="darkThemeSecondaryColourV3">#025f8b</color>
<color name="darkThemeDarkPrimaryColourV3">#2f2856</color>
<color name="darkThemeDarkSecondaryColourV3">#50448f</color>

values\attrs.xml (如果不存在则在 values 文件夹中创建 attrs.xml)

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <!-- background color keys -->
    <attr name="basePrimaryBackgroundColour" format="reference|color"/>
    <attr name="baseSecondaryBackgroundColour" format="reference|color"/>

</resources>

values\themes.xml (如果不存在则在 values 文件夹中创建 attrs.xml)

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="LightLoginThemeV3">

        <!-- keys from values/attrs.xml file -->
        <!-- background color keys -->
        <!-- using light Theme colors via @color -->
        <item name="basePrimaryBackgroundColour">@color/lightBackgroundPrimaryV3</item>
        <item name="baseSecondaryBackgroundColour">@color/lightBackgroundSecondaryV3</item>

        <item name="windowNoTitle">true</item>
        <!-- Support library compatibility -->
        <item name="windowActionBar">false</item>
        <item name="android:windowBackground">@color/backgroundSecondaryV3</item>
        <item name="android:popupBackground">@color/backgroundSecondaryV3</item>

        <!-- EditText Fields -->
        <item name="colorControlNormal">@color/medium_grey</item>
        <item name="colorControlActivated">@color/themePrimaryColourV3</item>
        <item name="colorControlHighlight">@color/themePrimaryColourV3</item>

    </style>

    <style name="DarkLoginThemeV3">

        <!-- keys from values/attrs.xml file -->
        <!-- background color keys -->
        <!-- using dark Theme colors via @color -->
        <item name="basePrimaryBackgroundColour">@color/darkBackgroundPrimaryV3</item>
        <item name="baseSecondaryBackgroundColour">@color/darkBackgroundSecondaryV3</item>

        <item name="android:windowNoTitle">true</item>
        <!-- Support library compatibility -->
        <item name="windowActionBar">false</item>
        <item name="android:windowBackground">@color/colorTrans</item>
        <item name="android:popupBackground">@color/darkist_grey</item>

        <!-- EditText Fields -->
        <item name="colorControlNormal">@color/dark_grey</item>
        <item name="colorControlActivated">@color/colorPrimary</item>
        <item name="colorControlHighlight">@color/colorPrimary</item>

    </style>

</resources>

在我的相关布局文件中，像这样设置背景......

 //key from values/attrs.xml file
 android:background="?attr/basePrimaryBackgroundColour"

在我的 Activity onCreate() 方法(和 onResume() 方法)中，通过下面的 values\themes.xml 动态设置主题 ...

if(darkTheme){
    setTheme(R.style.DarkLoginThemeV3);
}else{
    setTheme(R.style.LightLoginThemeV3);
}

在我的 Activity 中，通过 clickListner 事件，通过下面的 values\themes.xml 动态更改主题 ...

if(darkTheme){
    setTheme(R.style.DarkLoginThemeV3);
    recreate();
}else{
    setTheme(R.style.LightLoginThemeV3);
    recreate();
}