为什么Android中的重复事件的持续时间为NULL? [英] Why duration is NULL for recurrent event in android?

问题描述

我尝试实现与android日历事件的一种同步方式(我需要原始事件-而不是事件实例).因此，我有以下查询:

I try to implement one way synchronization with android calendar events (I need original events - not event instances). So, I have the following query:

String[] projection = new String[]{
                    CalendarContract.Events.DTSTART,
                    CalendarContract.Events.EVENT_TIMEZONE,
                    CalendarContract.Events.DTEND,
                    CalendarContract.Events.EVENT_END_TIMEZONE,
                    CalendarContract.Events.DURATION
            };
String selection = null;
String[] args = new String[0];
String sort = CalendarContract.Events.DTSTART + " ASC";
Cursor cursor = getContentResolver().query(CalendarContract.Events.CONTENT_URI, projection, selection, args, sort);

根据开发人员文档中的周期性事件dtstart和duration是必需的，但是当我通过Google日历创建活动并稍后在我的代码中接收到它时，我有dtend = 0和duration = null.

According to developer docs for recurrent events dtstart and duration are required but when I create event through Google calendar and receive it later in my code I have dtend = 0 and duration = null.

Integer dtend = cursor.getLong(2);
String duration = cursor.getString(4);

为什么会发生?

推荐答案

我的原始应用程序中的索引有问题. CalendarContract.Events.DURATION列解决了该问题.它具有RFC2445格式的单个事件持续时间.我只需要解析它.

I have an issue with indexes in my original application. CalendarContract.Events.DURATION column solves the problem. It has single event duration in RFC2445 format. I just need to parse it.

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