title: Android bottomnavigation view item icon size
body: <p>I need to do a bottom navigation view in Android like this: <a href="https://i.stack.imgur.com/OmfYB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OmfYB.jpg" alt="what i want"></a>
  I tried, and now I have something like this: <a href="https://i.stack.imgur.com/M7ZuK.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M7ZuK.jpg" alt="what i have"></a></p>
  
  <p>How can I increase size of the + icon? It will be static and bigger then another icons all the time. Other icons will change color when activated, but the size will remain the same. </p>
  
  <p>Activity xml:</p>
  
  <pre><code> &lt;com.google.android.material.bottomnavigation.BottomNavigationView
      android:id="@+id/bottom_navigation"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      app:itemBackground="@color/white"
      app:layout_anchor="@id/bottom_navigation"
      app:layout_constraintBottom_toBottomOf="parent"
      app:labelVisibilityMode="labeled"
      app:menu="@menu/bottom_navigation_main"
      tools:layout_editor_absoluteX="4dp" /&gt;
  </code></pre>
  
  <p>Bottom navigation view xml:</p>
  
  <pre><code>&lt;item
      android:id="@+id/action_home"
      android:enabled="true"
      android:icon="@drawable/ic_home"
      android:title="@string/home"
      app:showAsAction="ifRoom"/&gt;
  
  &lt;item
      android:id="@+id/action_notification"
      android:enabled="true"
      android:icon="@drawable/ic_notification"
      android:title="@string/notification"
      app:showAsAction="ifRoom"/&gt;
  
  &lt;item
      android:id="@+id/action_add"
      android:enabled="true"
      android:title=" "
      android:icon="@drawable/ic_add_circle"
      app:showAsAction="ifRoom"
      app:itemIconSize="50px"/&gt;
  
  &lt;item
      android:id="@+id/action_schedule"
      android:enabled="true"
      android:title="@string/schedule"
      android:icon="@drawable/ic_schedule"
      app:showAsAction="ifRoom" /&gt;
  
  &lt;item
      android:id="@+id/action_profile"
      android:enabled="true"
      android:title="@string/profile"
      android:icon="@drawable/ic_profile"
      app:showAsAction="ifRoom" /&gt;
  </code></pre>
  
  <p></p>