Java - 如何更改应用程序选项卡的颜色？

Question

如何更改选项卡标题背景的颜色？标准颜色是蓝色。我怎样才能把它变成白色？喜欢这里:https://www.androidpolice.com/wp-content/uploads/2014/10/nexus2cee_43.png

Answer 1

自定义默认主题

例如，您的 styles.xml 文件应类似于以下内容:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

一旦你知道你的颜色，更新 res/values/colors.xml 中的值:

<?xml version="1.0" encoding="utf-8"?>
    <resources>
        <!--   color for the app bar and other primary UI elements -->
        <color name="colorPrimary">#3F51B5</color>

        <!--   a darker variant of the primary color, used for
               the status bar (on Android 5.0+) and contextual app bars -->
        <color name="colorPrimaryDark">#303F9F</color>

        <!--   a secondary color for controls like checkboxes and text fields -->
        <color name="colorAccent">#FF4081</color>
  </resources>

覆盖你想要的任何其他样式

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    ...
    <item name="android:windowBackground">@color/activityBackground</item>
</style>

引自:https://developer.android.com/guide/topics/ui/look-and-feel/themes.html#CustomizeTheme

以编程方式:

您可以在AndroidManifest.xml 中调用方法并设置Theme。

<application
android:name=".Class.App"
android:icon="@mipmap/ic_test"
android:theme="@style/AppTheme" <-- Add your custom theme here
</application>