判断网络是否可用的简便工具类

public class NetUtil {
    /**
     * @方法说明:判断是否有网络连接
     * @方法名称:isNetworkConnected
     * @param context
     * @return
     * @返回值:boolean
     */
    public static boolean isNetworkConnected(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;
    }

    /**
     * @方法说明:网络是否可用
     * @方法名称:isNetworkAvailable
     * @param context
     * @return
     * @返回值:boolean
     */
    public static boolean isNetworkAvailable(Context context)
    {
        ConnectivityManager mgr = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo[] info = mgr.getAllNetworkInfo();
        if (info != null)
        {
            for (int i = 0; i < info.length; i++)
            {
                if (info[i].getState() == NetworkInfo.State.CONNECTED)
                {
                    return true;
                }
            }
        }
        return false;
    }
}