断开网络连接后，Android SupplicantState返回COMPLETED

Question

问题： 当我连接到wifi，然后断开连接时，以下代码给我SupplicantState.COMPLETED

SupplicantState supState;
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
supState = wifiInfo.getSupplicantState();