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

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/simple_item_text"
        android:textAppearance="@android:style/TextAppearance.Medium"
        android:padding="8dp"
        tools:text="itemtext" />
</LinearLayout>