android 获取当前网络状态

最新推荐文章于 2021-12-20 09:05:42 发布

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这是一个Java类，用于检查Android设备的网络连接状态，包括WiFi和3G连接。还包含了一个方法来验证URL的有效性和获取设备的IP地址。

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public class NetWorkUtil {

    /**
     * 检查网络是否可用
     *
     * @param paramContext
     * @return
     */
    public static boolean isNetConnected(Context paramContext) {
        boolean i = false;
        NetworkInfo localNetworkInfo = ((ConnectivityManager) paramContext
                .getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo();
        if ((localNetworkInfo != null) && (localNetworkInfo.isAvailable()))
            return true;
        return false;
    }

    /**
     * 检测wifi是否连接
     */
    public static boolean isWifiConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                return true;
            }
        }
        return false;
    }

    /**
     * 检测3G是否连接
     */
    public static boolean is3gConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                return true;
            }
        }
        return false;
    }

    /**
     * 判断网址是否有效
     */
    public static boolean isLinkAvailable(String link) {
        Pattern pattern = Pattern.compile("^(http://|https://)" +
                        "?((?:[A-Za-z0-9]+-[A-Za-z0-9]+|[A-Za-z0-9]+)\\.)+([A-Za-z]+)[/\\?\\:]?.*$",
                Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(link);
        if (matcher.matches()) {
            return true;
        }
        return false;
    }

    /**
     * 获取ip地址
     *
     * @return
     */
    public static String getHostIP() {

        String hostIp = null;
        try {
            Enumeration nis = NetworkInterface.getNetworkInterfaces();
            InetAddress ia = null;
            while (nis.hasMoreElements()) {
                NetworkInterface ni = (NetworkInterface) nis.nextElement();
                Enumeration<InetAddress> ias = ni.getInetAddresses();
                while (ias.hasMoreElements()) {
                    ia = ias.nextElement();
                    if (ia instanceof Inet6Address) {
                        continue;// skip ipv6
                    }
                    String ip = ia.getHostAddress();
                    if (!"127.0.0.1".equals(ip)) {
                        hostIp = ia.getHostAddress();
                        break;
                    }
                }
            }
        } catch (SocketException e) {
            Log.i("yao", "SocketException");
            e.printStackTrace();
        }
        return hostIp;

    }

}