app/src/main/res/layout/activity_fullscreen_image.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true">
<ch.epfl.sdp.appart.ad.ResizableImageView
android:id="@+id/image_FullScreenImage_imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="@string/contentDescFullScreenImage"
app:srcCompat="@drawable/ic_launcher_background" />
</RelativeLayout>