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

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingBottom="16dp"
    android:paddingLeft="24dp"
    android:paddingRight="24dp"
    android:orientation="vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/del_rev_dialog_message"
        android:textAppearance="@style/TextAppearance.AppCompat.Medium"
        android:layout_marginBottom="16dp"/>

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:drawSelectorOnTop="true"
        android:entries="@array/rev_del_dialog_entries"/>

</LinearLayout>