Get SSID when WIFI is connected

I listen for WifiManager.NETWORK_STATE_CHANGED_ACTION in a broadcast receiver

if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {    NetworkInfo netInfo = intent.getParcelableExtra (WifiManager.EXTRA_NETWORK_INFO);    if (ConnectivityManager.TYPE_WIFI == netInfo.getType ()) {        ...    }}

I check for netInfo.isConnected(). Then I am able to use

WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);WifiInfo info = wifiManager.getConnectionInfo();String ssid  = info.getSSID();

UPDATE

From android 8.0 onwards we wont be getting SSID of the connected network unless location services are enabled and your app has the permission to access it.

Starting with Android 8.1 (API 27), apps must be granted the ACCESS_COARSE_LOCATION (or ACCESS_FINE_LOCATION) permission in order to obtain results from WifiInfo.getSSID() or WifiInfo.getBSSID(). Apps that target API 29 or higher (Android 10) must be granted ACCESS_FINE_LOCATION.

This permission is also needed to obtain results from WifiManager.getConnectionInfo() and WifiManager.getScanResults() although it is not clear if this is new in 8.1 or was required previously.

Source: "BSSID/SSID can be used to deduce location, so require the samelocation permissions for access to these WifiInfo fieldsrequested using WifiManager.getConnectionInfo() as forWifiManager.getScanResults()."

If you don't want to make Broadcast Receiver then simple try

WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);WifiInfo wifiInfo;wifiInfo = wifiManager.getConnectionInfo();if (wifiInfo.getSupplicantState() == SupplicantState.COMPLETED) {    ssid = wifiInfo.getSSID();}

Remember every time user disconnect or connect to new SSID or any wifi state change then you need to initialize WifiInfo i.e wifiInfo = wifiManager.getConnectionInfo();