<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="@dimen/move_button_size"
    android:layout_height="@dimen/move_button_size">

    <ImageView
        android:id="@+id/move_button"
        android:layout_width="@dimen/move_button_size"
        android:layout_height="@dimen/move_button_size"
        android:adjustViewBounds="true"
        android:alpha="0.7"
        android:src="@drawable/move_button" />

</android.support.constraint.ConstraintLayout>