设置 Toolbar(ActionBar) 上的按钮颜色

原文地址：
https://*.com/a/29536902
https://*.com/a/27754099

[your_layout.xml]

<android.support.v7.widget.Toolbar
    <!-- leave the theme stuff out of here -->
    style="@style/MyToolbarStyle"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

Styles / Themes in styles.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- your other attributes -->
    <!-- following is used to tint the checkbox - purple for demo purpose -->
    <item name="colorControlNormal">#2196F3</item>
</style>

<style name="MyToolbarStyle">
    <item name="android:minHeight">?actionBarSize</item>
    <item name="android:background">?colorPrimary</item>
    <item name="popupTheme">@style/ThemeOverlay.AppCompat.Light</item>
    <item name="theme">@style/MyToolbarTheme</item>
</style>

<style name="MyToolbarTheme">
    <!-- Used to tint the back arrow, menu and spinner arrow -->
    <item name="colorControlNormal">#FFF</item>
</style>

Result

Note: I made the checkbox purple for demo purpose

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Change arrow color of Spinner

1) In styles.xml, add the following style:

<style name="ActionBarThemeOverlay" parent="">
    <item name="android:textColorPrimary">#ffffff</item>
    <item name="colorControlNormal">#ffffff</item>
    <item name="colorControlHighlight">#ff33b5e5</item>
</style>

<style name="Widget.MyTheme.HeaderBar.Spinner" parent="Widget.AppCompat.Light.Spinner.DropDown.ActionBar">
    <item name="android:theme">@style/ActionBarThemeOverlay</item>
</style>

2) In the layout, where you use the Spinner (in your case with Toolbar), add the style to your spinner:

<Spinner
    xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/my_spinner"
         style="@style/Widget.MyTheme.HeaderBar.Spinner"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />