Apesar de seguir o passo-a-passo o ícone está preto. O arquivo active_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/activity_main_fab_novo_aluno"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_margin="16dp"
android:clickable="true"
android:src="@drawable/ic_action_novo_aluno"
android:focusable="true" />
<ListView
android:id="@+id/activity_main_Lista_de_alunos"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</RelativeLayout>O arquivo xml que representa o FAB
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24"
android:tint="#FFFFFF"
android:alpha="0.8">
<path
android:fillColor="@android:color/white"
android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
</vector>
O que eu fiz de errado?
