在操作栏上设置HTML字符串在SDK v21+的Material主题上不起作用

如果你想改变它，你应该在style.xml中设置主文本颜色

<resources>
    <!-- Base application theme. -->
    <style name="AppTheme" parent="android:Theme.Material.Light">
        <!-- Customize your theme here. -->
        <item name="android:textColorPrimary">@color/actionbar-text-color</item>
    </style>
</resources>    

我和你有同样的问题，是Holo。轻主题，但我想样式的动作栏的颜色，所以我需要改变文本的颜色以及标题和菜单。所以最后我去了git中心，查看源代码，直到我找到了该死的正确风格:

<?xml version="1.0" encoding="utf-8"?>
<!-- For honeycomb and up -->
<resources>

    <style name="myTheme" parent="@android:style/Theme.Holo.Light">
        <item name="android:actionBarStyle">@style/myTheme.ActionBar</item>
        <item name="android:actionMenuTextColor">@color/actionBarText</item>
    </style>

    <style name="myTheme.ActionBar" parent="@android:style/Widget.Holo.Light.ActionBar">
        <item name="android:background">@drawable/actionbarbground</item>
        <item name="android:titleTextStyle">@style/myTheme.ActionBar.Text</item>
    </style>

    <style name="myTheme.ActionBar.Text" parent="@android:style/TextAppearance">
        <item name="android:textColor">@color/actionBarText</item>
    </style>

</resources>

所以现在你要做的就是设置任何@color/actionBarText and@drawable/actionbarbground你想要!

把这个按你的风格放。

< name = android: textColorPrimary >项目@color yourcolor < - >项目

最简单的方法是: 将这两行添加到styles.xml文件中

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
...
<item name="android:textColorSecondary">@color/white</item>
<item name="android:textColor">@color/white</item>
</style>

用你的颜色替换颜色。

我已经用简单的一行代码完成了

actionBar.setTitle(Html.fromHtml("<font color='#ff0000'>ActionBartitle </font>"));

<android.support.v7.widget.Toolbar
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/toolbar"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:background="@color/color_primary"
  android:theme="@style/GalaxyZooThemeToolbarDarkOverflow"
  app:popupTheme="@style/Theme.AppCompat.NoActionBar" />


<style name="GalaxyZooThemeToolbarDarkOverflow" parent="Theme.AppCompat.NoActionBar">
  <!-- android:textColorPrimary is the  color of the title text
       in the Toolbar, in the Theme.AppCompat theme:  -->
  <item name="android:textColorPrimary">@color/abc_primary_text_material_light</item>
 
  <!-- android:textColorPrimaryInverse is the  color of the title
       text in the Toolbar, in the Theme.AppCompat.Light theme:  -->
  <!-- <item name="android:textColorPrimaryInverse">@color/abc_primary_text_material_light</item> -->
 
  <!-- android:actionMenuTextColor is the color of the text of
        action (menu) items in the Toolbar, at least in the
        Theme.AppCompat theme.
        For some reason, they already get the textColorPrimary
        when running on API 21, but not on older versions of
        Android, so this is only necessary to support older
        Android versions.-->
        <item name="actionMenuTextColor">@color/abc_primary_text_material_light</item>
  <!-- android:textColorSecondary is the color of the menu
       overflow icon (three vertical dots) -->
  <item name="android:textColorSecondary">@color/abc_secondary_text_material_light</item>
 
  <!-- This would set the toolbar's background color,
        but setting this also changes the popup menu's background,
        even if we define popupTheme for our <Toolbar> -->
  <!-- <item name="android:background">@color/color_primary</item> -->
</style>


**Reference:**
[https://www.murrayc.com/permalink/2014/10/28/android-changing-the-toolbars-text-color-and-overflow-icon-color/][1]