Android获取手机当前连接的WiFi信息（SSID，IP，连接状态）

╰+攻爆jí腚メ 2022-05-18 07:04 3371阅读 0赞

1、AndroidMainfest.xml文件中添加权限

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

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 );
    }