Signal-Android/app/src/main/res/layout/attachment_keyboard_button_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="wrap_content"
    android:layout_height="80dp"
    android:layout_marginEnd="6dp"
    android:minWidth="80dp"
    android:padding="8dp"
    android:background="@drawable/attachment_keyboard_button_background">

  <androidx.appcompat.widget.AppCompatImageView
      android:id="@+id/attachment_button_image"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:tint="@color/attachment_keyboard_button_foreground"
      app:layout_constraintBottom_toTopOf="@id/attachment_button_title"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      tools:src="@drawable/ic_sticker_32"/>

  <TextView
      android:id="@+id/attachment_button_title"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      style="@style/Signal.Text.Preview"
      android:fontFamily="sans-serif-medium"
      android:gravity="center"
      android:textColor="@color/attachment_keyboard_button_foreground"
      app:layout_constraintTop_toBottomOf="@id/attachment_button_image"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      tools:text="Web Shooter"/>

</androidx.constraintlayout.widget.ConstraintLayout>