将突出显示的活动添加到Calendar android studio

// 获取日历账户
String[] projection = new String[]{CalendarContract.Calendars._ID, CalendarContract.Calendars.ACCOUNT_NAME};
Cursor cursor = getContentResolver().query(CalendarContract.Calendars.CONTENT_URI, projection, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
    String calendarId = cursor.getString(cursor.getColumnIndex(CalendarContract.Calendars._ID));
    String accountName = cursor.getString(cursor.getColumnIndex(CalendarContract.Calendars.ACCOUNT_NAME));

    // 创建日历事件
    ContentValues values = new ContentValues();
    values.put(CalendarContract.Events.CALENDAR_ID, calendarId);
    values.put(CalendarContract.Events.TITLE, "活动标题");
    values.put(CalendarContract.Events.DESCRIPTION, "活动描述");
    values.put(CalendarContract.Events.EVENT_LOCATION, "活动地点");
    values.put(CalendarContract.Events.DTSTART, startTimeInMillis);
    values.put(CalendarContract.Events.DTEND, endTimeInMillis);
    values.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getID());

    // 插入日历事件
    Uri uri = getContentResolver().insert(CalendarContract.Events.CONTENT_URI, values);
    if (uri != null) {
        // 日历事件插入成功
        Toast.makeText(this, "活动已添加到日历", Toast.LENGTH_SHORT).show();
    } else {
        // 日历事件插入失败
        Toast.makeText(this, "添加活动到日历失败", Toast.LENGTH_SHORT).show();
    }
}