tt-rss-android/org.fox.ttrss/src/main/res/layout/article_images_image.xml

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/flavorImageHolder"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:visibility="invisible"
        android:text="@string/error_loading_image"
        android:id="@+id/flavor_image_error" />

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:id="@+id/flavor_image_progress" />


    <org.fox.ttrss.util.EnlargingImageView
        android:id="@+id/flavor_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:layout_gravity="center"
        android:scaleType="centerInside"
        android:visibility="visible" />
</FrameLayout>