Android获取手机当前连接的WiFi信息（SSID，IP，连接状态）

1、AndroidMainfest.xml文件中添加权限

2、获取wifi的ssid

/**     * 获取当前连接WIFI的SSID     */    public String getSSID() {        WifiManager wm = (WifiManager) getSystemService(WIFI_SERVICE);        if (wm != null) {            WifiInfo winfo = wm.getConnectionInfo();            if (winfo != null) {                String s = winfo.getSSID();                if (s.length() > 2 && s.charAt(0) == '"' && s.charAt(s.length() - 1) == '"') {                    return s.substring(1, s.length() - 1);                }            }        }        return "";    }

3、获取WiFi连接的ip地址

public static InetAddress getWifiIp() {        Context myContext = Globals.getContext();        if (myContext == null) {            throw new NullPointerException("Global context is null");        }        WifiManager wifiMgr = (WifiManager) myContext.getSystemService(Context.WIFI_SERVICE);        if (isWifiEnabled()) {            int ipAsInt = wifiMgr.getConnectionInfo().getIpAddress();            if (ipAsInt == 0) {                return null;            } else {                return Util.intToInet(ipAsInt);            }        } else {            return null;        }    }

// 取得wifi的ip地址　　InetAddress address = FTPServerService.getWifiIp();　　address.getHostAddress();

4、判断WiFi是否连接

public static boolean isWifiEnabled() {        Context myContext = Globals.getContext();        if (myContext == null) {            throw new NullPointerException("Global context is null");        }        WifiManager wifiMgr = (WifiManager) myContext.getSystemService(Context.WIFI_SERVICE);        if (wifiMgr.getWifiState() == WifiManager.WIFI_STATE_ENABLED) {            ConnectivityManager connManager = (ConnectivityManager) myContext                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo wifiInfo = connManager                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);            return wifiInfo.isConnected();        } else {            return false;        }    }

5、打开wifi设置的页面

Intent intent = new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS);startActivity(intent);

完！！！

补充：

//将获取的int转为真正的ip地址,参考的网上的，修改了下  private String intToInet(int i)  {　　return (i & 0xFF)+ "." + ((i >> 8 ) & 0xFF)? + "." + ((i >> 16 ) & 0xFF) +"."+((i >> 24 ) & 0xFF );}

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