android 最经典的获得网络类型状态的代码

最新推荐文章于 2023-08-06 16:10:28 发布

原创最新推荐文章于 2023-08-06 16:10:28 发布 · 840 阅读

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本文介绍了一个用于检测设备当前网络类型（如2G、3G、4G或Wi-Fi）的实用方法。通过使用Android系统的ConnectivityManager类，可以获取当前网络连接状态，并进一步判断其具体的网络类型。

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/**
 * make true current connect service is wifi
 * 判断当前网络的类型
 * @return
 */
public static String getNetTypeName(Context context) {

    String strNetworkType = "";
    ConnectivityManager connManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE);
    // 获取代表联网状态的NetWorkInfo对象 NetworkInfo networkInfo = connManager.getActiveNetworkInfo(); /
    NetworkInfo networkInfo = connManager.getActiveNetworkInfo();
    if (networkInfo != null && networkInfo.isConnected())
    {
        if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI)
        {
            strNetworkType = "WIFI";
        }
        else if (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE)
        {
            String _strSubTypeName = networkInfo.getSubtypeName();

            // TD-SCDMA   networkType is 17
            int networkType = networkInfo.getSubtype();
            switch (networkType) {
                case TelephonyManager.NETWORK_TYPE_GPRS:
                case TelephonyManager.NETWORK_TYPE_EDGE:
                case TelephonyManager.NETWORK_TYPE_CDMA:
                case TelephonyManager.NETWORK_TYPE_1xRTT:
                case TelephonyManager.NETWORK_TYPE_IDEN: //api<8 : replace by 11
                    strNetworkType = "2G";
                    break;
                case TelephonyManager.NETWORK_TYPE_UMTS:
                case TelephonyManager.NETWORK_TYPE_EVDO_0:
                case TelephonyManager.NETWORK_TYPE_EVDO_A:
                case TelephonyManager.NETWORK_TYPE_HSDPA:
                case TelephonyManager.NETWORK_TYPE_HSUPA:
                case TelephonyManager.NETWORK_TYPE_HSPA:
                case TelephonyManager.NETWORK_TYPE_EVDO_B: //api<9 : replace by 14
                case TelephonyManager.NETWORK_TYPE_EHRPD:  //api<11 : replace by 12
                case TelephonyManager.NETWORK_TYPE_HSPAP:  //api<13 : replace by 15
                    strNetworkType = "3G";
                    break;
                case TelephonyManager.NETWORK_TYPE_LTE:    //api<11 : replace by 13
                    strNetworkType = "4G";
                    break;
                default:
                    // http://baike.baidu.com/item/TD-SCDMA 中国移动 联通 电信 三种3G制式
                    if (_strSubTypeName.equalsIgnoreCase("TD-SCDMA") || _strSubTypeName.equalsIgnoreCase("WCDMA") || _strSubTypeName.equalsIgnoreCase("CDMA2000"))
                    {
                        strNetworkType = "3G";
                    }
                    else
                    {
                        strNetworkType = _strSubTypeName;
                    }

                    break;
            }

        }
    }
    return strNetworkType;

}