一些网络判断方法

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public class NetworkUtils {    /**     * @Title: checkingNetStatus     * @Description: 判断网络状态     * @param: @param context     * @param: @return     * @return: boolean false:网络异常；true 网络正常     */    public static boolean checkingNetStatus(Context context) {        boolean result = false;        ConnectivityManager conManager = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo networInfo = conManager.getActiveNetworkInfo(); // 取得网络连接相关信息        if (networInfo == null || !networInfo.isAvailable()) // 网络链接异常        {            result = false;        } else {            result = true;        }        return result;    }    /**     * 打开网络设置     */    public static void openNetSet(Context context) {        if (android.os.Build.VERSION.SDK_INT > 10) {            // 3.0以上打开设置界面，也可以直接用ACTION_WIRELESS_SETTINGS打开到wifi界面            context.startActivity(new Intent(                    android.provider.Settings.ACTION_SETTINGS));        } else {            context.startActivity(new Intent(                    android.provider.Settings.ACTION_WIRELESS_SETTINGS));        }    }    /**     * 检测手机是否开启GPRS网络,需要调用ConnectivityManager,TelephonyManager 服务.     *      * @param context     * @return boolean     */    public static boolean checkGprsNetwork(Context context) {        boolean has = false;        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        TelephonyManager mTelephony = (TelephonyManager) context                .getSystemService(Context.TELEPHONY_SERVICE);        NetworkInfo info = connectivity.getActiveNetworkInfo();        int netType = info.getType();        int netSubtype = info.getSubtype();        if (netType == ConnectivityManager.TYPE_MOBILE                && netSubtype == TelephonyManager.NETWORK_TYPE_UMTS                && !mTelephony.isNetworkRoaming()) {            has = info.isConnected();        }        return has;    }    public static int checkNetType(Context context){        int type=0;        //0--网络未连接        //1-wifi        //2-流量        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo.State gprs = connectivity.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();        NetworkInfo.State wifi = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();        if(gprs == NetworkInfo.State.CONNECTED || gprs == NetworkInfo.State.CONNECTING){                type=2;        }        //判断为wifi状态下才加载广告，如果是GPRS手机网络则不加载！        else if(wifi == NetworkInfo.State.CONNECTED || wifi == NetworkInfo.State.CONNECTING){                type=1;        }else {            type=0;        }        return type;    }    /**     * 检测手机是否开启WIFI网络,需要调用ConnectivityManager服务.     *     * @param context     * @return boolean     */    public static boolean checkWifiNetwork(Context context) {        boolean has = false;        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo info = connectivity.getActiveNetworkInfo();        int netType = info.getType();        int netSubtype = info.getSubtype();        if (netType == ConnectivityManager.TYPE_WIFI) {            has = info.isConnected();        }        return has;    }    /**     * 检测当前手机是否联网     *     * @param context     * @return boolean     */    public static boolean isNetworkAvailable(Context context) {        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        if (connectivity == null) {            return false;        } else {            NetworkInfo[] info = connectivity.getAllNetworkInfo();            if (info != null) {                for (int i = 0; i < info.length; i++) {                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {                        return true;                    }                }            }        }        return false;    }    /**     * 手机是否处在漫游     *     * @param mCm     * @return boolean     */    public boolean isNetworkRoaming(Context mCm) {        ConnectivityManager connectivity = (ConnectivityManager) mCm                .getSystemService(Context.CONNECTIVITY_SERVICE);        if (connectivity == null) {            return false;        }        NetworkInfo info = connectivity.getActiveNetworkInfo();        boolean isMobile = (info != null && info.getType() == ConnectivityManager.TYPE_MOBILE);        TelephonyManager mTm = (TelephonyManager) mCm                .getSystemService(Context.TELEPHONY_SERVICE);        boolean isRoaming = isMobile && mTm.isNetworkRoaming();        return isRoaming;    }    public static String getImeiId(Context context) {        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);        String imei = telephonyManager.getDeviceId();        return imei;    }}
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