Signal-Android/app/src/main/res/layout/v2_media_gallery_item.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:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/signal_colorSurfaceVariant">

    <com.google.android.material.imageview.ShapeableImageView
        android:id="@+id/media_gallery_image"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:importantForAccessibility="no"
        android:scaleType="centerCrop"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@drawable/test_gradient" />

    <ImageView
        android:id="@+id/media_gallery_play_overlay"
        android:layout_width="36dp"
        android:layout_height="36dp"
        android:importantForAccessibility="no"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/v2_media_gallery_item_video_overlay" />

    <TextView
        android:id="@+id/media_gallery_check"
        android:layout_width="wrap_content"
        android:layout_height="26dp"
        android:layout_marginStart="3dp"
        android:layout_marginTop="3dp"
        android:background="@drawable/media_selection_pill"
        android:gravity="center"
        android:minWidth="26dp"
        android:paddingHorizontal="9.5dp"
        android:textColor="@color/signal_light_colorNeutral"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="1" />

    <View
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:background="?selectableItemBackground"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>