fedilab-Android-App/app/src/main/res/layouts/mastodon/layout/layout_media.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/media_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/media"
        android:adjustViewBounds="true"
        android:layout_height="match_parent"
        android:scaleType="centerCrop"
        android:layout_width="match_parent"
        tools:src="@tools:sample/backgrounds/scenic"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="ContentDescription" />

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/play_video"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/ic_baseline_play_circle_filled_24"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/media"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/media"
        tools:visibility="visible" />

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/play_music"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/ic_baseline_audiotrack_24"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/media"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/media" />

    <ImageView
        android:id="@+id/view_hide"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_margin="5dp"
        android:contentDescription="@string/visibility"
        android:src="@drawable/ic_baseline_visibility_24"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/media" />

    <ImageView
        android:id="@+id/view_description"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:layout_margin="5dp"
        android:contentDescription="@string/description"
        android:src="@drawable/ic_outline_note_alt_24"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/media"
        app:layout_constraintEnd_toEndOf="parent"
        tools:visibility="visible" />

</androidx.constraintlayout.widget.ConstraintLayout>