title: AppBar shadow not being removed, android
body: <p>I'm working on a android application and I'm trying to remove the shadow under my AppBar, I tried to use <code>android:elevation="0dp"</code> but it didn't work for me, I tried <code>&lt;item name="android:windowContentOverlay"&gt;@null&lt;/item&gt;</code> on the style but it didn't work either, here's my code :</p>
  
  <p><strong>Styles.xml</strong></p>
  
  <pre><code>&lt;resources&gt;
  
      &lt;!-- Base application theme. --&gt;
      &lt;style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"&gt;
          &lt;!-- Customize your theme here. --&gt;
          &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
          &lt;item name="colorPrimaryDark"&gt;@color/colorPrimaryDark&lt;/item&gt;
          &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="AppTheme.NoActionBar"&gt;
          &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
          &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" /&gt;
  
      &lt;style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" /&gt;
  
  
      &lt;style name="MyCheckBox" parent="Theme.AppCompat.Light"&gt;
          &lt;item name="colorControlNormal"&gt;#005cb8&lt;/item&gt;
          &lt;item name="colorControlActivated"&gt;#005cb8&lt;/item&gt;
      &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p><strong>activity_bienvenu.xml</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@drawable/background"
      android:fitsSystemWindows="true"
      tools:context="molfix.dev.molfix.Activities.Bvn.BienvenuActivity"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/appbar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          app:elevation="0dp"
          android:background="#91d0f0"&gt;
  
          &lt;android.support.v7.widget.Toolbar
              android:id="@+id/toolbar"
              android:layout_width="match_parent"
              android:layout_height="45dp"
              android:background="@drawable/toolbar_bienvenu"
              android:scrollbars="none"
              android:weightSum="1"
              app:popupTheme="@style/AppTheme.PopupOverlay"&gt;
  
          &lt;/android.support.v7.widget.Toolbar&gt;
  
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>I'm using api 25 as target and 19 as minimum, any help?</p>