ScreenFilter/res/xml/toggle_widget.xml

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:configure="me.yoqi.screenfilter.ui.ScreenFilterWidgetConfigure"
    android:initialLayout="@layout/toggle"
    android:minHeight="48.0dip"
    android:minWidth="48.0dip"
    android:updatePeriodMillis="0" />