Example usage for android.content Context WIFI

Introduction

In this page you can find the example usage for android.content Context WIFI_SERVICE.

Prototype

String WIFI_SERVICE

To view the source code for android.content Context WIFI_SERVICE.

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Document

Use with #getSystemService(String) to retrieve a android.net.wifi.WifiManager for handling management of Wi-Fi access.

Usage

From source file:Main.java

public static String getLocalIpAddress(Context context) {
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    if (wifiInfo != null && wifiInfo.getIpAddress() != 0) {
        return android.text.format.Formatter.formatIpAddress(wifiInfo.getIpAddress());
    } else {//  w ww .j  a v a  2 s.c o m
        try {
            Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
            while (en.hasMoreElements()) {
                NetworkInterface intf = en.nextElement();
                Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
                while (enumIpAddr.hasMoreElements()) {
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    if (!inetAddress.isLoopbackAddress() && inetAddress.getHostAddress().indexOf(":") == -1) {
                        String ipAddress = inetAddress.getHostAddress();
                        if (!TextUtils.isEmpty(ipAddress) && !ipAddress.contains(":")) {
                            return ipAddress;
                        }
                    }
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }
    return null;
}

From source file:Main.java

/**
 * Returns true if WiFi connection was established
 * @param context - used to get connectivity manger
 * @return true if WiFi connection established, otherwise - false.
 *///from  w ww .  j a v a 2 s.c o m
public static boolean isWifiConnected(Context context) {
    final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

    final WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    if (wifiInfo == null)
        return false;

    return wifiInfo.getIpAddress() != 0;
}

From source file:Main.java

/**
 * Returns the wi-fi broadcast address//w  ww .  j a  v a  2s. co  m
 *
 * @param context the app context
 * @return returns an the broadcast address
 * @throws IOException
 */
public static InetAddress getBroadcastAddress(Context context) throws IOException {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo dhcp = wifi.getDhcpInfo();
    // handle null somehow

    int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
    byte[] quads = new byte[4];
    for (int k = 0; k < 4; k++)
        quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
    return InetAddress.getByAddress(quads);
}

From source file:Main.java

public static String getWifiMac(Context context) {
    String macAddr;//from w ww .j a  va2s  .com
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    macAddr = wifiInfo.getMacAddress();
    if (TextUtils.isEmpty(macAddr)) {
        NetworkInterface networkInterface = null;
        try {
            networkInterface = NetworkInterface.getByInetAddress(InetAddress.getByName(getIPAddr()));
            byte[] hardwareAddress = networkInterface.getHardwareAddress();
            macAddr = byte2hex(hardwareAddress);
        } catch (SocketException e) {
            e.printStackTrace();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
    return macAddr;
}

From source file:Main.java

/**
 * get the local ip address by Android System
 * /*from  w w w. jav a 2s  .co  m*/
 * @param context
 *            the context
 * @return the local ip addr allocated by Ap
 */
public static InetAddress getLocalInetAddress(Context context) {
    WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wm.getConnectionInfo();
    int localAddrInt = wifiInfo.getIpAddress();
    String localAddrStr = __formatString(localAddrInt);
    InetAddress localInetAddr = null;
    try {
        localInetAddr = InetAddress.getByName(localAddrStr);
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return localInetAddr;
}

From source file:Main.java

/**
 * Determines if the device's wifi is currently enabled or not.
 * //  ww  w  .  j  av  a 2s  . co m
 * @param context A context with which to access wifi system service
 * @return True if wifi is enabled or enabling, false otherwise
 */
public static boolean wifiIsEnabled(ContextWrapper context) {
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    int wifiState = wifiManager.getWifiState();
    return (wifiState == WifiManager.WIFI_STATE_ENABLED || wifiState == WifiManager.WIFI_STATE_ENABLING);
}

From source file:Main.java

public static void reconnectWifi(Context context, int networkId) {
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo ni = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

    if (ni != null) {
        WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        if (networkId > -1) {
            wm.enableNetwork(networkId, true);
        }/*from w  w w  .j av  a  2  s  .  co  m*/
    }
}

From source file:Main.java

/**
 * Enables or disables wifi.  Requires CHANGE_WIFI_STATE permission.
 * //from  w  ww  . j a  v  a  2 s  .co  m
 * @param context A context with which to access wifi system service
 * @param enable True if wifi should be enabled, false if it should be disabled
 */
public static void enableWifi(ContextWrapper context, boolean enable) {
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    wifiManager.setWifiEnabled(enable);
}

From source file:Main.java

public static int disconnectWifi(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo ni = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

    if (ni != null && ni.isConnectedOrConnecting()) {
        WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        int id = wm.getConnectionInfo().getNetworkId();
        return wm.disconnect() ? id : -1;
    }/*from   ww w .  j a v  a 2 s . com*/

    return -1;
}

From source file:Main.java

public static String getDeviceInfo(Context context) {
    try {//from   w  w  w. ja  v  a2  s  .  c  o m
        org.json.JSONObject json = new org.json.JSONObject();
        android.telephony.TelephonyManager tm = (android.telephony.TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);

        String device_id = tm.getDeviceId();

        android.net.wifi.WifiManager wifi = (android.net.wifi.WifiManager) context
                .getSystemService(Context.WIFI_SERVICE);

        String mac = wifi.getConnectionInfo().getMacAddress();
        json.put("mac", mac);

        if (TextUtils.isEmpty(device_id)) {
            device_id = mac;
        }

        if (TextUtils.isEmpty(device_id)) {
            device_id = android.provider.Settings.Secure.getString(context.getContentResolver(),
                    android.provider.Settings.Secure.ANDROID_ID);
        }

        json.put("device_id", device_id);

        return json.toString();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

Example usage for android.content Context WIFI_SERVICE

Introduction

Prototype

Document

Usage