我正在尝试读取两个日期之间的日历事件。
我使用了Google开发人员示例(https://developer.android.com/guide/topics/providers/calendar-provider),但是它不起作用。
当然,我在要求的日期有活动。
如果我读取了日历的所有事件,则该日历正常工作,因此(不好的)解决方案是检查每个返回的事件是否包含在间隔中...
这是我的代码:
final String[] EVENT_PROJECTION = new String[]{
CalendarContract.Events._ID,
CalendarContract.Events.TITLE,
CalendarContract.Events.DTSTART,
CalendarContract.Events.DTEND,
};
final int PROJECTION_ID_INDEX = 0;
final int PROJECTION_TITLE_INDEX = 1;
final int PROJECTION_DTSTART_INDEX = 2;
final int PROJECTION_DTEND_INDEX = 3;
Calendar beginTime = Calendar.getInstance();
beginTime.set(2020, 3, 18, 0, 0);
long startMillis = beginTime.getTimeInMillis();
Calendar endTime = Calendar.getInstance();
endTime.set(2020, 3, 24, 0, 0);
long endMillis = endTime.getTimeInMillis();
Uri.Builder builder = CalendarContract.Instances.CONTENT_URI.buildUpon();
ContentUris.appendId(builder, startMillis);
ContentUris.appendId(builder, endMillis);
String selection = CalendarContract.Instances.CALENDAR_ID + " = " + calID;
if (ActivityCompat.checkSelfPermission(this, permission.READ_CALENDAR) == PackageManager.PERMISSION_GRANTED) {
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(builder.build(), EVENT_PROJECTION, selection, null, null);
if (cursor != null) {
while (cursor.moveToNext()) {
Log.i (TAG, "ID=" + cursor.getLong(PROJECTION_ID_INDEX) + " Title=" + cursor.getString(PROJECTION_TITLE_INDEX));
}
cursor.close();
}
}
构建器已正确初始化(类似“ content://com.android.calendar/instances/when/1584486000000/1584918000000”)
下面的代码可以很好地返回日历的所有事件:
Cursor eventCursor = cr.query(CalendarContract.Events.CONTENT_URI, EVENT_PROJECTION, selection, null, null);
我尝试了很多方法,但仍然没有结果...
有人知道为什么它会失败吗?
谢谢
答案 0 :(得分:0)
这是解决方案,不完全是Google的代码...
final String[] EVENT_PROJECTION = new String[]{
CalendarContract.Events._ID,
CalendarContract.Events.TITLE,
CalendarContract.Events.DTSTART,
CalendarContract.Events.DTEND,
};
final int PROJECTION_ID_INDEX = 0;
final int PROJECTION_TITLE_INDEX = 1;
final int PROJECTION_DTSTART_INDEX = 2;
final int PROJECTION_DTEND_INDEX = 3;
Calendar beginTime = Calendar.getInstance();
beginTime.set(2020, 3, 18, 0, 0);
long startMillis = beginTime.getTimeInMillis();
Calendar endTime = Calendar.getInstance();
endTime.set(2020, 3, 24, 0, 0);
long endMillis = endTime.getTimeInMillis();
String where = "((dtstart >= " + startMillis + ") AND (dtstart <= " + endMillis + ") AND (calendar_id = " + calID + "))";
if (ActivityCompat.checkSelfPermission(this, permission.READ_CALENDAR) == PackageManager.PERMISSION_GRANTED) {
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(Events.CONTENT_URI, projection, where, null, null);
if (cursor != null) {
while (cursor.moveToNext()) {
Log.i (TAG, "ID=" + cursor.getLong(PROJECTION_ID_INDEX) + " Title=" + cursor.getString(PROJECTION_TITLE_INDEX));
}
cursor.close();
}
}