Android的CalendarContract，删除重复事件导致所有事件消失日历吗？ [英] Android CalendarContract, deleting a recurring event causes all events to disappear on calendar?

问题描述

我有一个处理同步日历和活动的同步适配器。我能够删除正常的活动就好了。但每当我删除重复发生的事件，我的日历中所有活动消失了。

I have a sync adapter that handles syncing calendars and events. I am able to delete normal events just fine. But whenever I delete a recurring event, all the events on my calendar disappear.

有一件事我注意到的是，每当我删除重复发生的事件，在实例表被清空，这也解释了消失的事件。在活动如预期表中，与经常性活动的行从表中删除。

One thing I noticed is that whenever I deleted a recurring event, the Instances table is emptied, which explains the events disappearing. The Events table is as expected, with the recurring event row deleted from the table.

是什么原因造成的？

我曾尝试删除在以下几个方面：

I have tried deleting in the following ways:

resolver.delete(
    ContentUris.withAppendedId(Events.CONTENT_URI, id),
    null,
    null
);

resolver.delete(
    Events.CONTENT_URI,
    Events._ID + " = ?",
    new String[]{id}
);

，也可以作为 SyncAdapter ：

resolver.delete(
    Events.CONTENT_URI.buildUpon()
    .appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, "true")
    .appendQueryParameter(Calendars.ACCOUNT_NAME, account.name)
    .appendQueryParameter(Calendars.ACCOUNT_TYPE, account.type)
    .build(),
    Events._ID + " = ?",
    new String[]{id}
);

所有的方法对非经常性项目正常运行，但所有导致实例删除重复发生的事件时，被清空表。

All methods work correctly on non-recurring events, but all cause the Instances table to be emptied when deleting a recurring event.

更新

一件事我注意到的是，LogCat中吐出以下错误

One thing I noticed is that the LogCat spits out the following error

• 应用程序： system_process


• 标签： BufferQueue


• PID： 1187


• TID： 1518

• Application: system_process
• Tag: BufferQueue
• PID: 1187
• TID: 1518

[com.android.calendar / com.android.calendar.AllInOneActivity] BufferQueue：drainQueueLocked：超时等待的消费者

推荐答案

这竟然是我的一部分错误。当我的 SyncAdapter 被添加日历到数据库中，我并没有正确设置字段 SYNC_EVENTS （<一个href=\"http://developer.android.com/reference/android/provider/CalendarContract.CalendarColumns.html#SYNC_EVENTS\" rel=\"nofollow\">http://developer.android.com/reference/android/provider/CalendarContract.CalendarColumns.html#SYNC_EVENTS).具体而言，本场应设置为 1 。

It turned out to be an error on my part. When my SyncAdapter was adding calendars to the database, I was not properly setting the field SYNC_EVENTS (http://developer.android.com/reference/android/provider/CalendarContract.CalendarColumns.html#SYNC_EVENTS). Specifically, this field should be set to 1.

这是很难知道，这是问题，因为我仍然能够在技术上同步（推事件到服务器，并拉离服务器的事件），但我只是运行到我的活动消失的问题。

It was difficult to know that this was the issue because I was still able to technically "sync" (push events to the server and pull events from the server), but I was just running into the issue my events disappearing.

我希望这可以帮助别人了。

I hope this helps someone else too.

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