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

<?xml version="1.0" encoding="utf-8"?>
<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:validate="http://schemas.android.com/apk/res-auto"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <PreferenceCategory
        android:title="@string/danar_pump_settings"
        app:initialExpandedChildrenCount="0">

        <info.nightscout.androidaps.plugins.pump.danaR.BluetoothDevicePreference
            android:dialogTitle="@string/danar_bt_name_title"
            android:key="@string/key_danar_bt_name"
            android:title="@string/danar_bt_name_title" />

        <info.nightscout.androidaps.utils.textValidator.ValidatingEditTextPreference
            android:inputType="numberPassword"
            android:key="@string/key_danar_password"
            android:title="@string/danar_password_title"
            validate:customRegexp="@string/fourdigitnumber"
            validate:testErrorString="@string/error_mustbe4digitnumber"
            validate:testType="regexp" />

        <ListPreference
            android:defaultValue="0"
            android:entries="@array/danaSpeedArray"
            android:entryValues="@array/danaSpeedValues"
            android:key="@string/key_danars_bolusspeed"
            android:title="@string/bolusspeed" />

        <SwitchPreference
            android:defaultValue="false"
            android:key="@string/key_danar_useextended"
            android:title="@string/danar_useextended_title" />

        <SwitchPreference
            android:defaultValue="false"
            android:dependency="@string/key_danar_useextended"
            android:key="@string/key_danar_visualizeextendedaspercentage"
            android:title="@string/danar_visualizeextendedaspercentage_title" />

        <androidx.preference.PreferenceScreen
            android:key="absorption_danar_advanced"
            android:title="@string/advancedsettings_title">

            <PreferenceCategory
                android:title="@string/bluetooth">

                <SwitchPreference
                    android:defaultValue="false"
                    android:key="@string/key_btwatchdog"
                    android:summary="@string/btwatchdog_summary"
                    android:title="@string/btwatchdog_title" />

            </PreferenceCategory>

        </androidx.preference.PreferenceScreen>

    </PreferenceCategory>

</androidx.preference.PreferenceScreen>