device_admin.xml

<?xml version="1.0" encoding="utf-8"?>
<device-admin
    xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-policies>
        <limit-password />
        <!-- 限制密码类型 -->
        <watch-login />
        <!-- 监控登录尝试 -->
        <reset-password />
        <!-- 重置密码 -->
        <force-lock />
        <!--锁屏 -->
    </uses-policies>
</device-admin>