tests/tests/preference2/res/xml/pref_recycle.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2017 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License
  -->
<PreferenceScreen
    xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Enabled recycle (by default). -->
    <android.preference2.cts.RecycleCheckPreference
        android:key="pref_checkbox_recycle"
        android:title="Test"
        android:summary="Test" />

    <!-- Disable recycle. -->
    <android.preference2.cts.RecycleCheckPreference
        android:key="pref_checkbox_no_recycle"
        android:title="Test"
        android:summary="Test"
        android:recycleEnabled="false"/>

</PreferenceScreen>