app/src/main/res/layout/fsiva_main.xml
<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fsiva_main_imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitCenter">
</ImageView>