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

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="128dp"
    android:height="128dp"
    android:viewportWidth="128"
    android:viewportHeight="128">
  <path
      android:strokeWidth="1"
      android:pathData="M-22.4,-18.02h249.46v189.63h-249.46z"
      android:fillColor="#000000"
      android:strokeColor="#ffffff"/>
</vector>