int addressType = activeNetInfo.getAddresses().get(0).getAddressFamily();找不到getAddresses（）方法

对不起，我犯了一个错误。`getAddresses()`方法是在`LinkAddress[]`数组上而不是直接在`NetworkInfo`对象上，所以应该先获取所有地址列表再访问第一个地址。以下是修正后的代码：

NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();
if (activeNetInfo != null && (activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI || activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE)) {
    LinkProperties linkProperties = activeNetInfo.getLinkProperties();
    List<inet6_address_t> inetAddresses = linkProperties.getGlobalIPv6AddressList();
    
    if (!inetAddresses.isEmpty()) {
        int addressType = inetAddresses.get(0).getAddressFamily();
        if (addressType == NetworkInterface.ANYCAST_IPADDR || addressType == InternetProtocol.IPPROTO_IPV6) {
            Log.d("App", "Device supports IPv6");
        } else {
            Log.d("App", "Device does not support IPv6");
        }
    } else {
        Log.d("App", "Device does not have a global IPv6 address");
    }
}

这里我们先从`linkProperties`中获取全球IPv6地址列表，然后检查列表是否为空以及地址类型是否为IPv6。