homespeakersAndroid/app/src/main/res/xml/pref_general.xml

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <EditTextPreference
        android:capitalize="words"
        android:inputType="textCapWords"
        android:key="name"
        android:maxLines="1"
        android:selectAllOnFocus="true"
        android:singleLine="true"
        android:title="@string/pref_title_display_name" />
</PreferenceScreen>