private String getAppVersionName() {

        String versionName = "";

        try {

            PackageManager pm = this.getPackageManager();

            PackageInfo pi = pm.getPackageInfo(this.getPackageName(), );

            versionName = pi.versionName;

            if (versionName == null || versionName.length() <= ) {

                return "";

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return versionName;

    }

private String getUserAgent() {

        WebView wv = new WebView(this);

        WebSettings settings = wv.getSettings();

        String user_agent = settings.getUserAgentString();

        wv.destroy();

        return user_agent;

    }

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

telephonyManager.getDeviceId()

public String getLocalIpAddress() {

  try {

    for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {

      NetworkInterface intf = en.nextElement();

      for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {

        InetAddress inetAddress = enumIpAddr.nextElement();

        if (!inetAddress.isLoopbackAddress()) {

        return inetAddress.getHostAddress().toString();

      }

    }

  }

  } catch (SocketException ex) {

      Log.e(LOG_TAG, ex.toString());

  }

  return null;

} 

要记得添加权限 <uses-permission android:name="android.permission.INTERNET"/>