Question

如何在android我的代码中获取具有降序的调用日志列表，但它不起作用。它只显示通话记录升序。

我的代码是

    @Override
    protected List<CallLogDetail> doInBackground(Void... params) {
        data = new ArrayList<CallLogDetail>();
        managedCursor1=getActivity().getContentResolver().query(CallLog.Calls.CONTENT_URI, null,
                null, null, null);
        int number = managedCursor1.getColumnIndex(CallLog.Calls.NUMBER);
        int type = managedCursor1.getColumnIndex(CallLog.Calls.TYPE);
        int Name= managedCursor1.getColumnIndex(CallLog.Calls.CACHED_NAME);

        while (managedCursor1.moveToNext()) {
              String phNumber = managedCursor1.getString(number);
              String Names = managedCursor1.getString(Name);
             Bitmap photo = null
        Uri contactUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_FILTER_URI,
                Uri.encode(phNumber));
        String[] projection = new String[]{ContactsContract.Contacts._ID};
        Cursor c = getActivity().getContentResolver().query(contactUri, projection,
                null, null, null);
        if (c.moveToFirst()) {
            contactID = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID));
            inputStream = ContactsContract.Contacts.openContactPhotoInputStream(getActivity().getContentResolver(),
                    ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, new Long(contactID)));

        }
        c.close();

    if (inputStream != null) {
        photo = BitmapFactory.decodeStream(inputStream);
    }
    String callTypeCode = managedCursor1.getString(type);

    int callcode = Integer.parseInt(callTypeCode);
    String callType = null;
    switch (callcode) {
        case CallLog.Calls.OUTGOING_TYPE:
            callType = "Outgoing";
            break;
        case CallLog.Calls.INCOMING_TYPE:
            callType = "Incoming";
            break;
        case CallLog.Calls.MISSED_TYPE:
            callType = "Missed";
            break;
    }
    CallLogDetail c = new CallLogDetail(Names, phNumber, photo, callType);
    data.add(c);

    Comparator<CallLogDetail> callLogDetailComparator = Collections.reverseOrder();
    Collections.sort(data, callLogDetailComparator);   }

我正在使用比较器和 Collections.reverseOrder（），但它无效。

Answer 1

＆＃34; COLUMN_FOR_SORT DESC＆＃34;没有为我工作。

我用过：

Cursor managedCursor1 = getContentResolver().query(
        CallLog.Calls.CONTENT_URI, null, null, null,CallLog.Calls.DATE + " DESC");

完成了这项工作。

Answer 2

内容提供程序查询的最后一个参数将对要传递null的数据进行排序。

managedCursor1=getActivity().getContentResolver().query(CallLog.Calls.CONTENT_URI, null,
            null, null, null);

将其更改为：

managedCursor1=getActivity().getContentResolver().query(CallLog.Calls.CONTENT_URI, null,
            null, null, "COLUMN_FOR_SORT DESC");

如何在android中获得降序的通话记录列表？

2 个答案: