将SMS消息标记为已读/未读或删除在KitKat中不起作用的消息

我一直在研究SMS应用程序。一切顺利，直到昨天，当我将Nexus 4更新为Android 4.4 KitKat时。将SMS标记为已读/未读以及删除线程中的所有消息之类的功能已停止工作。为什么会这样呢？它可以在其他三星设备（不运行KitKat）上运行。

这是我的代码，用于将邮件标记为已读或未读：

public static void markRead(final Context context, final Uri uri,
            final int read) {
        Log.d(TAG, "markRead(" + uri + "," + read + ")");
        if (uri == null) {
            return;
        }
        String[] sel = Message.SELECTION_UNREAD;
        if (read == 0) {
            sel = Message.SELECTION_READ;
        }
        final ContentResolver cr = context.getContentResolver();
        final ContentValues cv = new ContentValues();
        cv.put(Message.PROJECTION[Message.INDEX_READ], read);
        try {
            cr.update(uri, cv, Message.SELECTION_READ_UNREAD, sel);
        } catch (IllegalArgumentException e) {
            Log.e(TAG, "failed update", e);
            Toast.makeText(context, e.getMessage(), Toast.LENGTH_LONG).show();
        }
}

为了删除线程中的所有消息，我使用：

public static void deleteMessages(final Context context, final Uri uri,
            final int title, final int message, final Activity activity) {

        Log.i(TAG, "deleteMessages(..," + uri + " ,..)");
        final Builder builder = new Builder(context);
        builder.setTitle(title);
        builder.setMessage(message);
        builder.setNegativeButton(android.R.string.no, null);
        builder.setPositiveButton(android.R.string.yes,
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(final DialogInterface dialog,
                            final int which) {
                        final int ret = context.getContentResolver().delete(
                                uri, null, null);
                        Log.d(TAG, "deleted: " + ret);
                        if (activity != null && !activity.isFinishing()) {
                            activity.finish();
                        }
                        if (ret > 0) {
                            Conversation.flushCache();
                            Message.flushCache();
                            SmsReceiver.updateNewMessageNotification(context,
                                    null);
                            // adapter.notifyDataSetChanged();
                        }
                        try {
                            testFromFragment(context);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                });
        builder.show();
}