riff_app/app/src/debug/res/drawable/ic_launcher_background.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
  <group android:scaleX="0.84375"
      android:scaleY="0.84375">
    <path
        android:strokeWidth="1"
        android:pathData="M-22.4,-18.02h249.46v189.63h-249.46z"
        android:fillColor="#000000"
        android:strokeColor="#ffffff"/>
  </group>
</vector>