Yuito-app-android/app/src/main/res/xml/http_proxy_preferences.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen android:title="@string/pref_title_http_proxy_settings"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <CheckBoxPreference
        android:defaultValue="false"
        android:key="httpProxyEnabled"
        android:title="@string/pref_title_http_proxy_enable" />
    <EditTextPreference
        android:key="httpProxyServer"
        android:title="@string/pref_title_http_proxy_server"
        android:summary="%s" />
    <EditTextPreference
        android:key="httpProxyPort"
        android:title="@string/pref_title_http_proxy_port"
        android:summary="%s" />

</PreferenceScreen>