open-keychain/OpenKeychain/src/main/res/layout/qr_code_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">

        <ImageView
            android:id="@+id/qr_code_image"
            android:padding="32dp"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            style="@style/SelectableItem" />

    </LinearLayout>
</RelativeLayout>