Android-获取当前网络类型: 无网络、WIFI、2G、3G

工具类

新建工具类IntentUtil

/**
 * 获取当前网络类型: 无网络、WF、2G、3G、4G、5G 网络
 */
public class IntentUtil {

    public static final int NETWORK_NONE = 0; // 没有网络连接
    public static final int NETWORK_WIFI = 1; // wifi连接
    public static final int NETWORK_2G = 2; // 2G
    public static final int NETWORK_3G = 3; // 3G
    public static final int NETWORK_4G = 4; // 4G
    public static final int NETWORK_5G = 5; // 5G
    public static final int NETWORK_MOBILE = 6; // 手机流量


    /**
     * 判断网络是否连接
     *
     * @param context context
     * @return true/false
     */
    public static boolean isNetConnected(Context context) {
        ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivity != null) {
            NetworkInfo info = connectivity.getActiveNetworkInfo();
            if (info != null && info.isConnected()) {
                if (info.getState() == NetworkInfo.State.CONNECTED) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * 获取运营商名字
     *
     * @param context context
     * @return int
     */
    public static String getOperatorName(Context context) {
        /*
         * getSimOperatorName()就可以直接获取到运营商的名字
         * 也可以使用IMSI获取，getSimOperator()，然后根据返回值判断，例如"46000"为移动
         * IMSI相关链接：http://baike.baidu.com/item/imsi
         */
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        // getSimOperatorName就可以直接获取到运营商的名字
        return telephonyManager.getSimOperatorName();
    }

    /**
     * 获取当前网络连接类型
     */
    public static int getNetworkState(Context context) {
        //获取系统的网络服务
        ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //如果当前没有网络
        if (null == connManager)
            return NETWORK_NONE;
        //获取当前网络类型，如果为空，返回无网络
        @SuppressLint("MissingPermission") NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();
        if (activeNetInfo == null || !activeNetInfo.isAvailable()) {
            return NETWORK_NONE;
        }
        // 判断是不是连接的是不是wifi
        @SuppressLint("MissingPermission") NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (null != wifiInfo) {
            NetworkInfo.State state = wifiInfo.getState();
            if (null != state)
                if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
                    return NETWORK_WIFI;
                }
        }
        // 如果不是wifi，则判断当前连接的是运营商的哪种网络2g、3g、4g等
        @SuppressLint("MissingPermission") NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (null != networkInfo) {
            NetworkInfo.State state = networkInfo.getState();
            String strSubTypeName = networkInfo.getSubtypeName();
            if (null != state)
                if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
                    switch (activeNetInfo.getSubtype()) {
                        //如果是2g类型
                        case TelephonyManager.NETWORK_TYPE_GPRS: // 联通2g
                        case TelephonyManager.NETWORK_TYPE_CDMA: // 电信2g
                        case TelephonyManager.NETWORK_TYPE_EDGE: // 移动2g
                        case TelephonyManager.NETWORK_TYPE_1xRTT:
                        case TelephonyManager.NETWORK_TYPE_IDEN:
                            return NETWORK_2G;
                        //如果是3g类型
                        case TelephonyManager.NETWORK_TYPE_EVDO_A: // 电信3g
                        case TelephonyManager.NETWORK_TYPE_UMTS:
                        case TelephonyManager.NETWORK_TYPE_EVDO_0:
                        case TelephonyManager.NETWORK_TYPE_HSDPA:
                        case TelephonyManager.NETWORK_TYPE_HSUPA:
                        case TelephonyManager.NETWORK_TYPE_HSPA:
                        case TelephonyManager.NETWORK_TYPE_EVDO_B:
                        case TelephonyManager.NETWORK_TYPE_EHRPD:
                        case TelephonyManager.NETWORK_TYPE_HSPAP:
                            return NETWORK_3G;
                        //如果是4g类型
                        case TelephonyManager.NETWORK_TYPE_LTE:
                            return NETWORK_4G;
                        case TelephonyManager.NETWORK_TYPE_NR: //对应的20 只有依赖为android 10.0才有此属性
                            return NETWORK_5G;
                        default:
                            //中国移动 联通 电信 三种3G制式
                            if (strSubTypeName.equalsIgnoreCase("TD-SCDMA") || strSubTypeName.equalsIgnoreCase("WCDMA") || strSubTypeName.equalsIgnoreCase("CDMA2000")) {
                                return NETWORK_3G;
                            } else {
                                return NETWORK_MOBILE;
                            }
                    }
                }
        }
        return NETWORK_NONE;
    }

    /**
     * 判断是否WIFI连接
     *
     * @param context context
     * @return true/false
     */
    public static synchronized boolean isWifiConnected(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager != null) {
            NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
            if (networkInfo != null) {
                int networkInfoType = networkInfo.getType();
                if (networkInfoType == ConnectivityManager.TYPE_WIFI || networkInfoType == ConnectivityManager.TYPE_ETHERNET) {
                    return networkInfo.isConnected();
                }
            }
        }
        return false;
    }

}

调用方法

在任意Activity中直接调用即可，可以把MainActivity更换成自己所在的Activity名称。

      Context mContext = MainActivity.this;

       // 网络是否连接
        boolean netConnected = IntentUtil.isNetConnected(mContext);
        // 运营商名称
        String operatorName = IntentUtil.getOperatorName(mContext);
        // 网络连接类型
        int networkState = IntentUtil.getNetworkState(mContext);
        // WIFI是否连接
        boolean wifiConnected = IntentUtil.isWifiConnected(mContext);

        CZLog.e("网络是否连接: " + (netConnected == true ? "YES" : "NO"));
        CZLog.e("运营商名称: " + operatorName);
        CZLog.e("网络连接类型: " + String.valueOf(networkState));
        CZLog.e("WIFI是否连接: " + (wifiConnected == true ? "YES" : "NO"));