Android menu background black with Theme.AppCompat?

What I did was I change my popUpTheme to DayNight so use

app:popupTheme="@style/ThemeOverlay.AppCompat.DayNight">

`

You can just use appNS to define the popupTheme as shown below.

app:popupTheme="@style/ThemeOverlay.AppCompat.Light"

You can change the background color of the popup menu as below.

1. Create a style in your styles.xml

   <style name="PopupMenuStyle" parent="Theme.AppCompat.Light">
        <item name="android:background">@android:color/white</item>
   </style>
   

2. Set this theme as your toolbar popup theme in your toolbar.xml

    <android.support.v7.widget.Toolbar     
       xmlns:app="http://schemas.android.com/apk/res-auto"    
       xmlns:android="http://schemas.android.com/apk/res/android"
   
           // Your code here
          app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
          app:popupTheme="@style/PopupMenuStyle" />
   

Hope this helps.

Refer this link

The accepted answer here worked for me. I am just repeating the same answer here again. Add the following to your Toolbar xml

<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
                                   xmlns:app="http://schemas.android.com/apk/res-auto"
                                   android:layout_width="fill_parent"
                                   android:layout_height="wrap_content"
                                   android:background="@color/toolbarbackground"
                                   android:elevation="4dp"
                                   app:popupTheme="@style/YOUR_THEME_HERE"
                                   android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    >

In your styles.xml:

 <style name="YOUR_THEME_HERE" parent="ThemeOverlay.AppCompat.Light">
        <item name="android:colorBackground">#000000</item>
        <item name="android:textColor">#ffffff</item>
    </style>

The above style gives white font on a black background.

Credit to #Eugen Pechanec