android 以太网设置静态ip

先是查到了以下的方法，发现是设置Wi-Fi的。

public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  ContentResolver cr = this.getContentResolver();
  try {
   if (Settings.System.getInt(cr, Settings.System.WIFI_USE_STATIC_IP)==0){
    Log.d("Demo", "No use Static IP!");
   }
   else{
    Log