Android 8.0 Tv 修改以太网ip地址掩码网关 DNS及DHCP和静态切换

1.修改静态IP:

import android.net.IpConfiguration;import android.net.IpConfiguration.IpAssignment;import android.net.IpConfiguration.ProxySettings;import android.os.Environment;import android.util.Log;import android.util.SparseArray; import com.android.server.net.IpConfigStore; import java.net.InetAddress;//add by lvjiongimport android.net.NetworkUtils;import android.net.LinkAddress;import android.net.StaticIpConfiguration;   private boolean setStaticIp(){        boolean isSuccessful = true;        try {            //每个IpConfiguration对象内部都包含了一个StaticIpConfiguration对象，对于DHCP方式来说这个对象赋为null            StaticIpConfiguration staticIpConfiguration = new StaticIpConfiguration();//用于保存静态IP、dns、gateway、netMask相关参数配置            InetAddress mIpAddr = NetworkUtils.numericToInetAddress("192.168.50.239");//把192.168.1.1这种格式字符串转化为IP地址对象            String[] strs = "255.255.255.0".split("\\.");            int count = 0;            for(String str : strs){                if(str.equals("255")){                    count++;                }            }            int prefixLength = count*8;            LinkAddress mIpAddress = new LinkAddress(mIpAddr,prefixLength);//prefixLength就是表示子网掩码字符有几个255，比如255.255.255.0的prefixLength为3            InetAddress mGateway = NetworkUtils.numericToInetAddress("192.168.50.255");//默认网关            ArrayList<InetAddress> mDnsServers = new ArrayList<InetAddress>();//DNS            mDnsServers.add(NetworkUtils.numericToInetAddress("192.168.50.1"));            //mDnsServers.add(NetworkUtils.numericToInetAddress(et_dns2.getText().toString()));            staticIpConfiguration.ipAddress = mIpAddress;            staticIpConfiguration.gateway = mGateway;            staticIpConfiguration.dnsServers.addAll(mDnsServers);            //ProxySettings为代理服务配置，主要有STATIC（手动代理）、PAC（自动代理）两种，NONE为不设置代理，UNASSIGNED为未配置代理（framework会使用NONE替代它）            //ProxyInfo包含代理配置信息            IpConfiguration config = new IpConfiguration(IpConfiguration.IpAssignment.STATIC, IpConfiguration.ProxySettings.NONE, staticIpConfiguration, ProxyInfo.buildDirectProxy(null,0));            mEthernetManager.setConfiguration(config);//执行该方法后，系统会先通过EthernetConfigStore保存IP配置到data/misc/ethernet/ipconfig.txt，再更新以太网配置、通过EthernetNetworkFactory重启eth设备（最终通过NetworkManagementService来操作开启关闭设备、更新状态）            //NetworkManagementService服务中提供了各种直接操作eth设备的API，如开关、列举、读写配置eth设备，都是通过发送指令实现与netd通信            //Netd 就是Network Daemon 的缩写，表示Network守护进程，Netd负责跟一些涉及网络的配置，操作，管理，查询等相关的功能实现        }catch (Exception e) {            e.printStackTrace();            isSuccessful = false;        }        return isSuccessful;    }

2.修改动态IP:

public void setMoveIp(){try {//对比STATIC，只需要把StaticIpConfiguration赋值为nullIpConfiguration config = new IpConfiguration(IpConfiguration.IpAssignment.DHCP, IpConfiguration.ProxySettings.NONE, null, ProxyInfo.buildDirectProxy(null,0));mEthManager.setConfiguration(config);}catch (Exception e) {e.printStackTrace();}}

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