Example usage for android.net.wifi WifiManager getDhcpInfo

Introduction

In this page you can find the example usage for android.net.wifi WifiManager getDhcpInfo.

Prototype

public DhcpInfo getDhcpInfo() 

Source Link

Document

Return the DHCP-assigned addresses from the last successful DHCP request, if any.

Usage

From source file:Main.java

public static String getBroadcastAddress(Context mContext) throws IOException {
    WifiManager wifi = (WifiManager) mContext.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).getHostAddress().toString();
}

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From source file:Main.java

public static InetAddress getBroadcastAddress(Context context) throws UnknownHostException {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo dhcp = wifi.getDhcpInfo();
    if (dhcp == null) {
        return InetAddress.getByName("255.255.255.255");
    }/*  www  .ja v a 2  s  .com*/
    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);
}

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From source file:Main.java

public static String getBroadcastAddress(Context context) {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo dhcp = wifi.getDhcpInfo();

    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));
    try {/*www.  j a v  a 2 s .  c o m*/
        return InetAddress.getByAddress(quads).getHostAddress();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }

    return "255.255.255.255";
}

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From source file:Main.java

/**
 * Returns the wi-fi broadcast address// w  w  w.  jav  a  2s .c  o 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);
}

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From source file:Main.java

public static String getBroadcastAddress(Context ctx) {
    WifiManager cm = (WifiManager) ctx.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo myDhcpInfo = cm.getDhcpInfo();
    if (myDhcpInfo == null) {
        return "255.255.255.255";
    }/* w  ww .  j  ava  2 s. c  o  m*/
    int broadcast = (myDhcpInfo.ipAddress & myDhcpInfo.netmask) | ~myDhcpInfo.netmask;
    byte[] quads = new byte[4];
    for (int k = 0; k < 4; k++)
        quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
    try {
        return InetAddress.getByAddress(quads).getHostAddress();
    } catch (Exception e) {
        return "255.255.255.255";
    }
}

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From source file:Main.java

/** get IP of the gateway this device is connected to (useful if gateway has server running) */
public static String getHostIpAddress(Context mContext) {

    WifiManager wifi = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
    String ip = Formatter.formatIpAddress(wifi.getDhcpInfo().gateway);

    return ip;//from ww w.j  a v a 2s  . com

}

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From source file:Main.java

public static String pingGateWayInWifi(Context context) {
    String gateWay = null;//from w w  w.  ja  va  2  s.c  o  m
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    if (wifiManager == null) {
        return "wifiManager not found";
    }
    DhcpInfo dhcpInfo = wifiManager.getDhcpInfo();
    if (dhcpInfo != null) {
        int tmp = dhcpInfo.gateway;
        gateWay = String.format("%d.%d.%d.%d", (tmp & 0xff), (tmp >> 8 & 0xff), (tmp >> 16 & 0xff),
                (tmp >> 24 & 0xff));
    }
    return gateWay;
}

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From source file:Main.java

public static String getGateWayAddress(Context context) {
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    boolean enable = wifiManager.isWifiEnabled();
    if (!enable) {
        return null;
    }//from   w w  w.j a  v  a  2  s  . c  o m
    DhcpInfo info = wifiManager.getDhcpInfo();
    return intToIp(info.gateway);
}

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From source file:Main.java

public static String getDhcpIpString(Context mContext) {
    WifiManager mWifiManager;
    String broadcastIp = null;//w  w w .  j a va2 s. co m
    mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
    if (mWifiManager.isWifiEnabled()) {
        DhcpInfo myDhcpInfo = mWifiManager.getDhcpInfo();
        if (myDhcpInfo == null) {
            Toast.makeText(mContext, "can not get dhcp info", Toast.LENGTH_SHORT).show();
            return null;
        } else {
            try {
                broadcastIp = getBroadcastAddress(myDhcpInfo).getHostAddress();
            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                return null;
            }
        }
        return broadcastIp;
    }
    return null;
}

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From source file:am.project.x.utils.ContextUtils.java

/**
 * WIFI?/*from   w  ww.  j  a va  2  s.c o  m*/
 *
 * @param context Context
 * @return true: false:
 */
@SuppressWarnings("BooleanMethodIsAlwaysInverted")
public static boolean isWifiConnected(Context context) {
    final WifiManager manager = (WifiManager) context.getApplicationContext()
            .getSystemService(Context.WIFI_SERVICE);
    if (manager == null)
        return false;
    final DhcpInfo info = manager.getDhcpInfo();
    return info != null && info.ipAddress != 0;
}

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