How to get IP address in Android

Get IP address on Android

Recently, when I was working on a project, one of the requirements is to obtain the current IP function of Android devices. After querying information, I solved it and recorded the implementation method.

1. Use WIFI

First set user permissions

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

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

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

Secondly, the code is as follows

public void onCreate(Bundle savedInstanceState) {

    (savedInstanceState);

    setContentView();

    

    //Get wifi service
    WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);

    //Discern whether wifi is enabled
    if (!()) {

    (true); 

    }

    WifiInfo wifiInfo = ();   

    int ipAddress = (); 

    String ip = intToIp(ipAddress); 

    EditText et = (EditText)findViewById(.EditText01);

    (ip);

  }  

  private String intToIp(int i) {   

    

     return (i &amp; 0xFF ) + "." +   

    ((i &gt;&gt; 8 ) &amp; 0xFF) + "." +   

    ((i &gt;&gt; 16 ) &amp; 0xFF) + "." +   

    ( i &gt;&gt; 24 &amp; 0xFF) ;

   }

2. Use GPRS

First, set user access permissions

<uses-permission android:name=""></uses-permission>

Secondly, the code is as follows

public String getLocalIpAddress()

  {

    try

    {

      for (Enumeration<NetworkInterface> en = (); ();)

      {

        NetworkInterface intf = ();

        for (Enumeration<InetAddress> enumIpAddr = (); ();)

        {

          InetAddress inetAddress = ();

          if (!())

          {

            return ().toString();

          }

        }

      }

    }

    catch (SocketException ex)

    {

      ("WifiPreference IpAddress", ());

    }

    return null;

  }

Thank you for reading, I hope it can help you. Thank you for your support for this site!