WearableCalendarContract 查询“不支持排序顺序"；错误

问题描述

我在尝试将排序顺序应用于我的查询时收到 Sort order is not supported 错误.如果排序顺序为空，则查询运行得很好.有人能帮我一下吗?代码如下:

I'm getting a Sort order is not supported error when trying to apply a sort order to my query. The query runs just fine if the sort order is null. Can anyone help me here? Code is below:

            long currentTime = System.currentTimeMillis();
            Uri.Builder builder = WearableCalendarContract.Instances.CONTENT_URI.buildUpon();
            ContentUris.appendId(builder, currentTime);
            ContentUris.appendId(builder, currentTime + DateUtils.DAY_IN_MILLIS);

            final String[] PROJECTION = {
                    CalendarContract.Calendars._ID, // 0
                    CalendarContract.Instances.BEGIN, // 1
                    CalendarContract.Instances.END, // 2
                    CalendarContract.Events.DISPLAY_COLOR, // 3
                    CalendarContract.Events.TITLE, // 4
                    CalendarContract.Events.ALL_DAY // 5
            };

            final Cursor cursor = getContentResolver()
                    .query(builder.build(),
                            PROJECTION,
                            null, // selection (all)
                            null, // selection args
                            CalendarContract.Instances.BEGIN + " ASC"); // order

推荐答案

正如错误消息所说，WearableCalendarContract.Instances.CONTENT_URI 不支持排序.它是与 CalendarContract 完全不同的实现，即使它共享相同的字段.

Exactly as the error message says, WearableCalendarContract.Instances.CONTENT_URI does not support sorting. It is a completely separate implementation from CalendarContract, even though it shares the same fields.

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