Android(安卓)Actionbar(标题栏)的背景设置

这东西Android官方文档是有的（点击打开链接），这里顺便说下使用ActionbarSherlock时的设置。

For Android 3.0 and higher only（对于不需要兼容2.x时可以直接如下设置）

When supporting Android 3.0 and higher only, you can define the action bar's background like this:

res/values/themes.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <!-- the theme applied to the application or activity -->
  <style name="CustomActionBarTheme"
     parent="@style/Theme.Holo.Light.DarkActionBar">
    <item name="android:actionBarStyle">@style/MyActionBar</item>
  </style>

  <!-- ActionBar styles 背景主要就是这里设置了-->
  <style name="MyActionBar"
     parent="@style/Widget.Holo.Light.ActionBar.Solid.Inverse">
    <item name="android:background">@drawable/actionbar_background</item>
  </style>
</resources>

actionbar_background背景资源如下：

<?xml version="1.0" encoding="utf-8"?><color xmlns:android="http://schemas.android.com/apk/res/android" android:color="#7EC0EE"></color>

For Android 2.1 and higher（需要兼容2.x时要做的如下）

When using the Support Library, the same theme as above must instead look like this:

res/values/themes.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <!-- the theme applied to the application or activity -->
  <style name="CustomActionBarTheme"
     parent="@style/Theme.AppCompat.Light.DarkActionBar">
    <item name="android:actionBarStyle">@style/MyActionBar</item>

    <!-- Support library compatibility -->
    <item name="actionBarStyle">@style/MyActionBar</item>
  </style>

  <!-- ActionBar styles -->
  <style name="MyActionBar"
     parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
    <item name="android:background">@drawable/actionbar_background</item>

    <!-- Support library compatibility -->
    <item name="background">@drawable/actionbar_background</item>
  </style>
</resources>

ActionbarSherlock也类似这样做，Theme.AppCompat.Light.DarkActionBar换成Theme.Sherlock.Light；Widget.AppCompat.Light.ActionBar.Solid.Inverse换成Widget.Sherlock.Light.ActionBar.Solid.Inverse 就行了

效果：

For Android 2.1 and higher（需要兼容2.x时要做的如下）

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