open-keychain/OpenKeychain/src/main/res/layout/nfc_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include
        android:id="@+id/toolbar_include"
        layout="@layout/toolbar_standalone" />

    <LinearLayout
        android:layout_below="@id/toolbar_include"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingLeft="16dp"
        android:paddingRight="16dp"
        android:paddingTop="16dp"
        android:paddingBottom="16dp">

        <TextView
            android:text="@string/nfc_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="@android:style/TextAppearance.Large"
            android:id="@+id/nfc_text"
            android:gravity="center"
            android:layout_gravity="center" />

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/yubikey_phone" />

    </LinearLayout>
</RelativeLayout>