prebuilts/gradle/AppRestrictionSchema/Application/src/main/res/xml/app_restrictions.xml

<?xml version="1.0" encoding="utf-8"?><!--
Copyright 2014 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.
-->
<restrictions xmlns:android="http://schemas.android.com/apk/res/android">

    <!--
    Refer to the javadoc of RestrictionsManager for detail of this file.
    https://developer.android.com/reference/android/content/RestrictionsManager.html
    -->

    <!-- Boolean restriction -->
    <restriction
        android:defaultValue="@bool/default_can_say_hello"
        android:description="@string/description_can_say_hello"
        android:key="can_say_hello"
        android:restrictionType="bool"
        android:title="@string/title_can_say_hello"/>

    <!-- String restriction -->
    <restriction
        android:defaultValue="@string/default_message"
        android:description="@string/description_message"
        android:key="message"
        android:restrictionType="string"
        android:title="@string/title_message"/>

    <!-- Integer restriction -->
    <restriction
        android:defaultValue="@integer/default_number"
        android:description="@string/description_number"
        android:key="number"
        android:restrictionType="integer"
        android:title="@string/title_number"/>

    <!-- Choice restriction -->
    <restriction
        android:defaultValue="@string/default_rank"
        android:description="@string/description_rank"
        android:entries="@array/entries_rank"
        android:entryValues="@array/entry_values_rank"
        android:key="rank"
        android:restrictionType="choice"
        android:title="@string/title_rank"/>

    <!-- Multi-select restriction -->
    <restriction
        android:defaultValue="@array/default_approvals"
        android:description="@string/description_approvals"
        android:entries="@array/entries_approvals"
        android:entryValues="@array/entry_values_approvals"
        android:key="approvals"
        android:restrictionType="multi-select"
        android:title="@string/title_approvals"/>

    <!-- Hidden restriction -->
    <restriction
        android:defaultValue="@string/default_secret_code"
        android:description="@string/description_secret_code"
        android:key="secret_code"
        android:restrictionType="hidden"
        android:title="@string/title_secret_code"/>

    <!-- Bundle array restriction -->
    <restriction
        android:description="@string/description_items"
        android:key="items"
        android:restrictionType="bundle_array"
        android:title="@string/title_items">
        <!-- Bundle array must have one bundle restriction -->
        <restriction
            android:key="item"
            android:restrictionType="bundle"
            android:title="@string/title_item">
            <restriction
                android:key="key"
                android:restrictionType="string"
                android:title="@string/title_key"/>
            <restriction
                android:key="value"
                android:restrictionType="string"
                android:title="@string/title_value"/>
        </restriction>
    </restriction>

</restrictions>