提供iCal Events的正确方法是什么?

时间:2014-12-11 15:34:49

标签: c# android asp.net asp.net-mvc icalendar

我正在尝试允许用户使用DDay.iCal将在线日历中的活动添加到设备上的日历中。这似乎在iOS和桌面平台上运行良好,但我遇到了Android设备的问题。我遇到这个消息:

Android Error Message

有没有更好的方法来发挥这一事件,以防止这种情况发生?

public ActionResult ICS(int id)
{
        // Get event from Database
        var heEvent = HEEvent.GetEventDetails(id);

        // Create iCal object
        var iCal = new iCalendar();
        iCal.Method = "PUBLISH";

        // Create iCal Event
        var icalEvent = iCal.Create<DDay.iCal.Event>();
        icalEvent.Summary = heEvent.Name;
        icalEvent.Start = new iCalDateTime(heEvent.TimeBegin.Year, heEvent.TimeBegin.Month, heEvent.TimeBegin.Day, heEvent.TimeBegin.Hour, heEvent.TimeBegin.Minute, 00);

        TimeSpan calculatedEventDuration = heEvent.DateEnd.Subtract(heEvent.TimeBegin);
        if (calculatedEventDuration.Hours > 1) { icalEvent.Duration = calculatedEventDuration; }
        else { icalEvent.Duration = TimeSpan.FromHours(1); } // default to 1 hour if event time is less

        icalEvent.Location = heEvent.Location;

        // Create a serialization context and serializer factory.
        // These will be used to build the serializer for our object.
        ISerializationContext ctx = new SerializationContext();
        ISerializerFactory factory = new DDay.iCal.Serialization.iCalendar.SerializerFactory();
        // Get a serializer for our object
        IStringSerializer serializer = factory.Build(iCal.GetType(), ctx) as IStringSerializer;

        string output = serializer.SerializeToString(iCal);
        var contentType = "text/calendar";
        var bytes = Encoding.UTF8.GetBytes(output);

        return File(bytes, contentType, String.Format(@"{0}.ics", heEvent.Name.Replace(" ", "_")));
}

1 个答案:

答案 0 :(得分:-1)

你的错误,你不需要我告诉你,与Ical无关。它完全在您,您的手机和技术预算之间。 (购买SD卡!)

关于服务Icalendars,您经常听到他们称为Feed,但是客户定期订阅Icalendar轮询日历网址,每次请求整个日历。为了避免大量不必要的处理,您需要以某种方式保留日历,以便更改传播而无需重新生成相同的日历数千次。为此,我建议使用文件系统并充分利用HTTP缓存头。修改日历后,将其作为静态文件写入面向Web的目录中。也许你已经这样做了。然后在您的网络服务器上设置合理的缓存标题,然后离开。