前言：借鑒了幾位大牛的網(wǎng)絡(luò)狀態(tài)工具類，自己整合了一個(gè)。功能包含有：網(wǎng)絡(luò)是否連接，wifi是否打開，是否wifi連接，Gps是否打開，是否3G網(wǎng)絡(luò)，獲取連接網(wǎng)絡(luò)類型(3G/4G/wifi,包含運(yùn)營(yíng)商信息)，打開設(shè)置頁(yè)面，等等。

/**
 * @desc
 * @auth 方毅超
 * @time 2017/10/27 14:29
 */

public class NetworkUtil {

    private NetworkUtil() {
        /* cannot be instantiated */
        throw new UnsupportedOperationException("cannot be instantiated");
    }

    /**
     * 判斷網(wǎng)絡(luò)是否連接
     *
     * @param context
     * @return
     */
    public static boolean isConnected(Context context) {

        ConnectivityManager connectivity = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        if (null != connectivity) {

            NetworkInfo info = connectivity.getActiveNetworkInfo();
            if (null != info && info.isConnected()) {
                return true;
            }
        }
        return false;
    }

    /**
     * wifi是否打開
     */
    public static boolean isWifiEnabled(Context context) {
        ConnectivityManager mgrConn = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        TelephonyManager mgrTel = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
                .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
                .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
    }

    /**
     * 判斷是否是wifi連接
     */
    public static boolean isWifi(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        if (cm == null)
            return false;
        return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;

    }

    /**
     * Gps是否打開
     *
     * @param context
     * @return
     */
    public static boolean isGpsEnabled(Context context) {
        LocationManager locationManager = ((LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE));
        List<String> accessibleProviders = locationManager.getProviders(true);
        return accessibleProviders != null && accessibleProviders.size() > 0;
    }

    /**
     * 判斷當(dāng)前網(wǎng)絡(luò)是否3G網(wǎng)絡(luò)
     *
     * @param context
     * @return boolean
     */
    public static boolean is3G(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
        if (activeNetInfo != null
                && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
            return true;
        }
        return false;
    }

    /**
     * 打開網(wǎng)絡(luò)設(shè)置界面
     */
    public static void openSetting(Activity activity) {
        Intent intent = new Intent("/");
        ComponentName cm = new ComponentName("com.android.settings",
                "com.android.settings.WirelessSettings");
        intent.setComponent(cm);
        intent.setAction("android.intent.action.VIEW");
        activity.startActivityForResult(intent, 0);
    }

    /**
     * 獲取連接網(wǎng)絡(luò)類型(3G/4G/wifi,包含運(yùn)營(yíng)商信息)
     *
     * @param context
     * @return 返回連接網(wǎng)絡(luò)類型(運(yùn)營(yíng)商3G/4G/wifi)，如果網(wǎng)絡(luò)未連接，返回"";
     */
    public static String getNetworkType(Context context) {
        String networkType = "";
        networkType = getNetworkTypeNoProvider(context);

        // 如果使用的數(shù)據(jù)流量，則添加運(yùn)營(yíng)商信息
        if (networkType.contains("G")) {
            networkType = getProvider(context) + networkType;
        }

        return networkType;
    }

    /**
     * 獲取運(yùn)營(yíng)商
     *
     * @return 中國(guó)移動(dòng)/中國(guó)聯(lián)通/中國(guó)電信/未知
     */
    private static String getProvider(Context context) {
        String provider = "未知";
        try {
            TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
            String IMSI = telephonyManager.getSubscriberId();
            Log.d(TAG, "getProvider.IMSI:" + IMSI);
            if (IMSI == null) {
                if (TelephonyManager.SIM_STATE_READY == telephonyManager.getSimState()) {
                    String operator = telephonyManager.getSimOperator();
                    Log.d(TAG, "getProvider.operator:" + operator);
                    if (operator != null) {
                        if (operator.equals("46000") || operator.equals("46002") || operator.equals("46007")) {
                            provider = "中國(guó)移動(dòng)";
                        } else if (operator.equals("46001")) {
                            provider = "中國(guó)聯(lián)通";
                        } else if (operator.equals("46003")) {
                            provider = "中國(guó)電信";
                        }
                    }
                }
            } else {
                if (IMSI.startsWith("46000") || IMSI.startsWith("46002") || IMSI.startsWith("46007")) {
                    provider = "中國(guó)移動(dòng)";
                } else if (IMSI.startsWith("46001")) {
                    provider = "中國(guó)聯(lián)通";
                } else if (IMSI.startsWith("46003")) {
                    provider = "中國(guó)電信";
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return provider;
    }

    /**
     * 獲取連接網(wǎng)絡(luò)類型(3G/4G/wifi,不包含運(yùn)營(yíng)商信息)
     *
     * @param context
     * @return 返回結(jié)果中，不包含運(yùn)營(yíng)商，返回連接網(wǎng)絡(luò)類型(3G/4G/wifi)，如果網(wǎng)絡(luò)未連接，返回"";
     */
    private static String getNetworkTypeNoProvider(Context context) {
        String strNetworkType = "";

        NetworkInfo networkInfo = ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE))
                .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();
                Log.d(TAG, "Network getSubtypeName : " + _strSubTypeName);

                // TD-SCDMA networkType is 17
                int networkType = networkInfo.getSubtype();
                switch (networkType) {
                    case TelephonyManager.NETWORK_TYPE_GPRS: // 聯(lián)通2G
                    case TelephonyManager.NETWORK_TYPE_EDGE: // 移動(dòng)2G
                    case TelephonyManager.NETWORK_TYPE_CDMA: // 電信2G
                    case TelephonyManager.NETWORK_TYPE_1xRTT:
                    case TelephonyManager.NETWORK_TYPE_IDEN: // api<8 : replace by 11
                        strNetworkType = "2G";
                        break;

                    case TelephonyManager.NETWORK_TYPE_EVDO_A: // 電信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: // 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:
                        if (_strSubTypeName.equalsIgnoreCase("TD-SCDMA") ||
                                _strSubTypeName.equalsIgnoreCase("WCDMA") ||
                                _strSubTypeName.equalsIgnoreCase("CDMA2000")) {
                            strNetworkType = "3G";
                        } else {
                            strNetworkType = _strSubTypeName;
                        }
                        break;
                }
                Log.d(TAG, "Network getSubtype : " + Integer.valueOf(networkType).toString());
            }
        }

        Log.d(TAG, "Network Type : " + strNetworkType);
        return strNetworkType;
    }

}

后記：2017-10-30，應(yīng)網(wǎng)友的反應(yīng)，稍微將該類做了下清爽型的整理。