設定Toolbar彈出選單的字型顏色和背景顏色，包括三個點選單顏色和返回圖示的顏色。

佈局檔案xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.Toolbar
        android:id
 
="@+id/titleBar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        style="@style/ToolbarStyle"/>

    <LinearLayout
        android:id="@+id/group"
        android:layout_width
 
="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" />
</LinearLayout>

樣式程式碼檔案xml

 <!--溢位選單樣式 -->
    <style name="AppTheme.PopupOverlay">
        <item name="overlapAnchor">false</item>
        <item name="android:dropDownWidth">wrap_content</item>
        <item name="android:colorBackground">@color/colorPrimary</item>
        <item name="android:textColor">@color/textColorPrimary</item>
    </style>

    <style name="ToolbarStyle" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="popupTheme">@style/AppTheme.PopupOverlay</item>
        <item name="theme">@style/ToolbarTheme</item>
    </style>

    <!--設定按鈕顏色-->
    <style name="ToolbarTheme">
        <!-- Used to tint the back arrow, menu and spinner arrow -->
        <item name="colorControlNormal">@color/textColorPrimary</item>
    </style>

顏色屬性

    <color name="colorPrimary">#3F51B5</color>
    <color name="textColorPrimary">#e6e6e6</color>