工具栏样式无效

Question

I'm trying to make a light-blue toolbar with white text color:

<android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        style="@style/ToolbarStyle"/>

and in my styles.xml:

<style name="ToolbarStyle" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
    <item name="android:background">?attr/colorPrimary</item>
</style>

But there's one problem, the text color is black instead of white

Note: Using android:theme or app:theme instead of style will fix the problem, but I still wanna know, why doesn't style work?

Answer 1

I think I understand the problem now,

style is used to style a view without its children views. android:theme and app:theme are used to style the view and its children.

So when it comes to styling the toolbar, you will probably want to style it and its children views so the activity label will be styled as well.