open-keychain/OpenKeychain/src/main/res/layout/select_public_key_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"
        layout="@layout/toolbar" />

    <RelativeLayout
        android:layout_below="@id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true">

        <FrameLayout
            android:id="@+id/select_public_key_fragment_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </RelativeLayout>
</RelativeLayout>