Android网络状态的获取

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public class MyNetWorkUtil {    //获取当前的网络状态     final int CURRENT_NETWORK_STATES_NO=-1;//-1：没有网络    final int CURRENT_NETWORK_STATES_WIFI=1;//1：WIFI网络    final int CURRENT_NETWORK_STATES_WAP=2;//2：wap网络    final int CURRENT_NETWORK_STATES_NET=3;//3：net网络    public static int getAPNType(Context context) {        //设置默认网路类型        int netType = CURRENT_NETWORK_STATES_NO;        //获取当前的网络管理器        ConnectivityManager connManager = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        //获取网络信息        NetworkInfo networkInfo = connManager.getActiveNetworkInfo();        if (networkInfo == null) {            return netType;        }        //得到网络类型        int nType = networkInfo.getType();        if (nType == ConnectivityManager.TYPE_MOBILE) {            netType = networkInfo.getExtraInfo().toLowerCase().equals("cmnet") ? CURRENT_NETWORK_STATES_NET : CURRENT_NETWORK_STATES_WAP;        } else if (nType == ConnectivityManager.TYPE_WIFI) {            netType = CURRENT_NETWORK_STATES_WIFI;        }        return netType;    }    /**     * 判断WiFi网络是否可用     *     * @param context     * @return     */    public static boolean isWifiConn(Context context) {        if (context != null) {            ConnectivityManager mConnectivityManager = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mWiFiNetworkInfo = mConnectivityManager                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);            if (mWiFiNetworkInfo != null) {                return mWiFiNetworkInfo.isAvailable();            }        }        return false;    }    /**     * 判断数据流量是否可用     *     * @param context     * @return     */    public static boolean isMobileConn(Context context) {        if (context != null) {            ConnectivityManager mConnectivityManager = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mMobileNetworkInfo = mConnectivityManager                    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);            if (mMobileNetworkInfo != null) {                return mMobileNetworkInfo.isAvailable();            }        }        return false;    }    /**     * 判断是否有网络     *     * @param context     * @return     */    public static boolean isNetworkConn(Context context) {        if (context != null) {            ConnectivityManager mConnectivityManager = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager                    .getActiveNetworkInfo();            if (mNetworkInfo != null) {                return mNetworkInfo.isAvailable();            }        }        return false;    }    //判断当前的进行或者服务是否存在（是否运行）    public static boolean isServiceRunning(Context mContext, String className) {        ActivityManager activityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);        List<ActivityManager.RunningServiceInfo> serviceList = activityManager.getRunningServices(30);        //30 就是一个数字 可以用常量Integer.MAX_VALUE 代替        if (!(serviceList.size() > 0)) {            return false;        }        boolean isRunning = false;        for (int i = 0; i < serviceList.size(); i++) {            if (serviceList.get(i).service.getClassName().equals(className)) {                isRunning = true;                break;            }        }        return isRunning;    }}
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