app_restrictions.xml

<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>