Android4.0.3 IP,子网掩码，网关修改

public void setStaticIp(String ip, String netmask,String gateway) {

WifiManager mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);

mWifiManager.setWifiEnabled(false);

EthernetManager mEthManager = (EthernetManager) getSystemService(Context.ETHERNET_SERVICE);

EthernetDevInfo info = mEthManager.getSavedConfig();

info.setIpAddress(ip);

info.setNetMask(netmask);

info.setGateWay(gateway);

mEthManager.updateDevInfo(info);

enableEth(mEthManager);

}

以下是利用反射机制，重新使能以太网

private void enableEth(final EthernetManager mEthManager) {

try {

ReflectionHelper.invokeMethod(mEthManager, "setEnabled", false);

BackupManager.dataChanged("com.android.providers.settings");

new Thread() {

public void run() {

try {

ReflectionHelper.invokeMethod(mEthManager, "setEnabled", true);

BackupManager .dataChanged("com.android.providers.settings");

Thread.sleep(500);

} catch (InterruptedException e) {

e.printStackTrace();

} catch (NoSuchMethodException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

}

};

}.start();

} catch (NoSuchMethodException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

}

}