如何更改ActionBar导航标签的颜色？

Question

我在应用程序中有一个ActionBar，它内嵌了导航标签（不是TabHost！）。默认情况下，选项卡显示为深灰色，所有选项卡下都有一条蓝色细线，选定选项卡上有一个蓝色标记。

我会覆盖哪些样式来更改这些颜色？

Answer 1

我没有更改标签本身，但我认为你可以使用styles.xml中的这些样式来完成...

 <style name="Widget.Holo.TabWidget" parent="Widget.TabWidget">
        <item name="android:tabStripLeft">@null</item>
        <item name="android:tabStripRight">@null</item>
        <item name="android:tabStripEnabled">false</item>
        <item name="android:divider">?android:attr/dividerVertical</item>
        <item name="android:showDividers">middle</item>
        <item name="android:dividerPadding">8dip</item>
        <item name="android:measureWithLargestChild">true</item>
        <item name="android:tabLayout">@android:layout/tab_indicator_holo</item>
    </style>

使用tab_indicator_holo.xml

  <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <!-- Non focused states -->
        <item android:state_focused="false" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/tab_unselected_holo" />
        <item android:state_focused="false" android:state_selected="true"  android:state_pressed="false" android:drawable="@drawable/tab_selected_holo" />

        <!-- Focused states -->
        <item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/tab_unselected_focused_holo" />
        <item android:state_focused="true" android:state_selected="true"  android:state_pressed="false" android:drawable="@drawable/tab_selected_focused_holo" />

        <!-- Pressed -->
        <!--    Non focused states -->
        <item android:state_focused="false" android:state_selected="false" android:state_pressed="true" android:drawable="@drawable/tab_unselected_pressed_holo" />
        <item android:state_focused="false" android:state_selected="true"  android:state_pressed="true" android:drawable="@drawable/tab_selected_pressed_holo" />

        <!--    Focused states -->
        <item android:state_focused="true" android:state_selected="false" android:state_pressed="true" android:drawable="@drawable/tab_unselected_pressed_focused_holo" />
        <item android:state_focused="true" android:state_selected="true"  android:state_pressed="true" android:drawable="@drawable/tab_selected_pressed_focused_holo" />
    </selector>

或者您也可以尝试

   <style name="Widget.Holo.ActionBar.TabView" parent="Widget.ActionBar.TabView">
            <item name="android:background">@drawable/tab_indicator_ab_holo</item>
            <item name="android:paddingLeft">16dip</item>
            <item name="android:paddingRight">16dip</item>
        </style>

和tab_indicator_ab_holo.xml

   <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <!-- Non focused states -->
        <item android:state_focused="false" android:state_selected="false" android:state_pressed="false" android:drawable="@color/transparent" />
        <item android:state_focused="false" android:state_selected="true"  android:state_pressed="false" android:drawable="@drawable/tab_selected_holo" />

        <!-- Focused states -->
        <item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/list_focused_holo" />
        <item android:state_focused="true" android:state_selected="true"  android:state_pressed="false" android:drawable="@drawable/tab_selected_focused_holo" />

        <!-- Pressed -->
        <!--    Non focused states -->
        <item android:state_focused="false" android:state_selected="false" android:state_pressed="true" android:drawable="@drawable/list_pressed_holo_dark" />
        <item android:state_focused="false" android:state_selected="true"  android:state_pressed="true" android:drawable="@drawable/tab_selected_pressed_holo" />

        <!--    Focused states -->
        <item android:state_focused="true" android:state_selected="false" android:state_pressed="true" android:drawable="@drawable/tab_unselected_pressed_holo" />
        <item android:state_focused="true" android:state_selected="true"  android:state_pressed="true" android:drawable="@drawable/tab_selected_pressed_holo" />
    </selector>

最后使用两个png-9 drawable：tab_selected_holo和tab_unselected_holo。它们看起来像你正在谈论的两条更粗更细的蓝线。

或者你的意思是迷你笔？

 <style name="Widget.ActionBar.TabView" parent="Widget">
        <item name="android:gravity">center_horizontal</item>
        <item name="android:background">@drawable/minitab_lt</item>
        <item name="android:paddingLeft">4dip</item>
        <item name="android:paddingRight">4dip</item>
    </style>

with minitab_lt.xml

 <selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:state_selected="true"
          android:drawable="@drawable/minitab_lt_press" />
    <item android:state_selected="true"
          android:drawable="@drawable/minitab_lt_selected" />
    <item android:state_pressed="true"
          android:drawable="@drawable/minitab_lt_unselected_press" />
    <item android:drawable="@drawable/minitab_lt_unselected" />
</selector>

如果您需要其他定义，只需在此处搜索TabWidget：https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/styles.xml

然后像往常一样用所有必需的属性和drawables定义你自己的风格......

Answer 2

如果您想轻松自定义标签栏，可以使用这个很棒的工具： http://jgilfelt.github.io/android-actionbarstylegenerator

您只需选择所需的颜色，它就会自动生成样式XML，PNG等。