AndroidAPS/app/src/main/res/xml/pref_openapsma.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:validate="http://schemas.android.com/apk/res-auto">
    <PreferenceCategory
        android:key="openaps"
        android:title="@string/openapsma">

        <EditTextPreference
            android:defaultValue="1"
            android:dialogMessage="@string/openapsma_maxbasal_summary"
            android:key="@string/key_openapsma_max_basal"
            android:numeric="decimal"
            android:title="@string/openapsma_maxbasal_title" />

        <EditTextPreference
            android:defaultValue="1.5"
            android:dialogMessage="@string/openapsma_maxiob_summary"
            android:key="@string/key_openapsma_max_iob"
            android:numeric="decimal"
            android:title="@string/openapsma_maxiob_title" />

        <PreferenceScreen android:title="@string/advancedsettings_title">

            <Preference android:summary="@string/openapsama_link_to_preferncejson_doc_txt">
                <intent
                    android:action="android.intent.action.VIEW"
                    android:data="@string/openapsama_link_to_preferncejson_doc" />
            </Preference>

            <SwitchPreference
                android:defaultValue="false"
                android:key="@string/key_always_use_shortavg"
                android:summary="@string/always_use_shortavg_summary"
                android:title="@string/always_use_shortavg" />

            <com.andreabaccega.widget.ValidatingEditTextPreference
                android:defaultValue="2"
                android:dialogMessage="@string/openapsama_bolussnooze_dia_divisor_summary"
                android:digits="0123456789.,"
                android:inputType="numberDecimal"
                android:key="@string/key_openapsama_bolussnooze_dia_divisor"
                android:maxLines="20"
                android:selectAllOnFocus="true"
                android:singleLine="true"
                android:title="@string/openapsama_bolussnooze_dia_divisor"
                validate:maxNumber="10"
                validate:minNumber="1"
                validate:testType="floatNumericRange" />
        </PreferenceScreen>

    </PreferenceCategory>

</PreferenceScreen>