CODEWITHSUNDEEP
androidnetwork-programmingwifi
Frank LaRosa
Frank LaRosa

Reputation: 3623

Detect wifi IP address on Android?

I need to determine if the Android device is connected to Wifi, and if so, obtain its Wifi IP address.

I know how to use ConnectivityManager to determine whether the active network is a Wifi network, and I know how to use java.net.NetworkInterface to iterate over the available network interfaces and get their IP addresses.

What I don't know how to do is determine which IP address belongs to the Wifi network, if there is more than one address found. Any advice?

Thanks.

Upvotes: 17

Views: 28858

Answers (3)

Tanmay Mandal
Tanmay Mandal

Reputation: 40188

public String getIpAddr() {
   WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
   WifiInfo wifiInfo = wifiManager.getConnectionInfo();
   int ip = wifiInfo.getIpAddress();

   String ipString = String.format(
   "%d.%d.%d.%d",
   (ip & 0xff),
   (ip >> 8 & 0xff),
   (ip >> 16 & 0xff),
   (ip >> 24 & 0xff));

   return ipString;
}

Please Note: You need to add android.permission.INTERNET and android.permission.ACCESS_WIFI_STATE in your AndroidManifest.xml as <user-permission/> to access the code.

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

Upvotes: 47

Kannan Suresh
Kannan Suresh

Reputation: 4580

Please try this code. 

ConnectivityManager connec = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

//To fetch the state of the Wi-Fi network in the device
Boolean isWifi = connec.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting(); 

WifiManager wifiMgr = (WifiManager) getBaseContext().getSystemService(Context.WIFI_SERVICE); 
WifiInfo wifiInfo = wifiMgr.getConnectionInfo(); 

//To fetch the name of the Wi-Fi network to which the device is connected
String wifiName = wifiInfo.getSSID();

Upvotes: 3

Ashok Domadiya
Ashok Domadiya

Reputation: 1122

static final int IP_ADDRESS_LENGTH = 32;

  public static Integer getSystemWifiIpAddress(Context context)
  {
    WifiManager wManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wInfo = wManager.getConnectionInfo();

    int ipAddress = wInfo.getIpAddress();
    if (ipAddress == 0)
      return null;
    return ipAddress;
  }

Upvotes: 1

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