how to get current wifi connection info in android

Question

I'm trying to find if scanResult is the currently connected wifi network.

here is my code

public boolean IsCurrentConnectedWifi(ScanResult scanResult) 
{
    WifiManager mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    WifiInfo currentWifi = mainWifi.getConnectionInfo();
    if(currentWifi != null)
    {
        if(currentWifi.getSSID() != null) 
        {
            if(currentWifi.getSSID() == scanResult.SSID)
            return true;
        }
    }  
    return false;
}

I have no problem with getting scanresult.

I'm always getting the currentWifi null.

Where am I doing wrong or is there any alternative method to do this?

score 62 · Accepted Answer · edited Oct 13 '17 at 09:31

Most probably you have already found answer: currentWifi.getSSID() is quoted in most cases where scanResult.SSID is not (and of course you must not use == on strings :)).

Try something like this, it returns current SSID or null:

public static String getCurrentSsid(Context context) {
  String ssid = null;
  ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
  if (networkInfo.isConnected()) {
    final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
    if (connectionInfo != null && !StringUtil.isBlank(connectionInfo.getSSID())) {
      ssid = connectionInfo.getSSID();
    }
  }
  return ssid;
}

also permissions are required:

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

StringUtil is not a standard Android class, so you can use TextUtils instead. The code then looks like this:

public static String getCurrentSsid(Context context) {
  String ssid = null;
  ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
  if (networkInfo.isConnected()) {
    final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
    if (connectionInfo != null && !TextUtils.isEmpty(connectionInfo.getSSID())) {
      ssid = connectionInfo.getSSID();
    }
  }
  return ssid;
}

as of now `connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);`is officially deprecated. so sad. — guness, Aug 26 '15 at 08:45
`getNetworkInfo` is deprecated, use `getActiveNetworkInfo` with `networkInfo.getType() == ConnectivityManager.TYPE_WIFI` — zed, Sep 27 '17 at 09:26
Please note that with latest Android versions you also need location permissions of some kind to actually get the SSID — nsndvd, Oct 11 '18 at 08:16

Evan Parsons · Answer 2 · 2019-08-09T14:45:47.777

19

My (used to be) non-deprecated, modified approach to the current answer

https://developer.android.com/reference/android/net/ConnectivityManager#getActiveNetworkInfo()

public static String getCurrentSsid(Context context) {
        String ssid = null;
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = cm.getActiveNetworkInfo();
        if (networkInfo == null) {
            return null;
        }

        if (networkInfo.isConnected()) {
            final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
            final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
            if (connectionInfo != null && !StringUtil.isBlank(connectionInfo.getSSID())) {
                ssid = connectionInfo.getSSID();
            }
        }

    return ssid;
}

edited Aug 09 '19 at 14:45

answered Apr 28 '16 at 22:24

Evan Parsons

1,139
20
31

1

Better to use `TextUtils.isEmpty()` instead of `StringUtil.isBlank()` – Onkar Nene Dec 22 '18 at 07:35
Any particular reason why? – Evan Parsons Jan 02 '19 at 02:55
when i run this code its just return `02:00:00:00:00:00` that it ! :| – Ninja Apr 02 '19 at 12:18
Well, now it's deprecated. (Deprecated since API 29) – Abdulrahman Hasanato Jun 12 '23 at 07:38

score 6 · Answer 3 · answered Feb 12 '19 at 16:37

Update Android Oreo. You will also need to add ACCESS_FINE_LOCATION Permission in Manifest otherwise it will return unknown SSID

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>


 fun getCurrentSsid(context: Context): String {
            var ssid = "NA"
            val connManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
            val networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
            if (networkInfo.isConnected) {
                val wifiManager = context.getSystemService(Context.WIFI_SERVICE) as WifiManager
                val connectionInfo = wifiManager.connectionInfo
                if (connectionInfo != null && !connectionInfo.ssid.isEmpty()) {
                    ssid = connectionInfo.ssid
                }
            }
            return ssid
        }

when i run this code its just return `02:00:00:00:00:00` that it ! :| — Ninja, Apr 02 '19 at 12:18

how to get current wifi connection info in android

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