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

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


		 List mWifiConfigurations = mWifiManager.getConfiguredNetworks();
		 for (WifiConfiguration mWifiConfiguration : mWifiConfigurations) {
				if (mWifiConfiguration.SSID.equals("\"free\"")) {
					int indexSSID = mWifiManager.addNetwork(mWifiConfiguration);
					boolean  isConnected = mWifiManager.enableNetwork(mWifiManager.getConfiguredNetworks().get(indexSSID).networkId, false);
					if(isConnected){

					 }
				}
	        }