Restoring Backed Up Messages, Conversations Times Are Incorrect

I am developing an android app which backs up and restores the messages/conversations from device. It backup the messages, export file in the form of xml, and then later restore it

Solution 1:

Thanks Mike M. I did find a solution and you are right, the conversation table is updated whenever a new message is received or sent by a user and the time of conversation is same as that message's (whether received or sent) time. But in case of writing messages through contentresolver query it does not work and the conversation time is current time at the time of writing. So what I did is add a temporary message in all of the conversations, right after messages are restored. And after that delete all the temporary messages, this will update the conversations time to last message time.

HashSeths=newHashSet();

            hs.addAll(list); 
//list is the ArrayList<String> which contains the addressess of all the messages and //through hashset we remove all the duplicates to get only the addressess once and hence we know the number of conversations and their addressess.

            list.clear();
            list.addAll(hs);
             //Add some dummy message to each conversationContentValuesvalues2=newContentValues();
            for (inti=0; i < list.size(); i++) {
                values2.put("address",list.get(i));
                values2.put("date_sent",readMsgsFromFile[0][1]);
                values2.put("date",readMsgsFromFile[0][2]);
                values2.put("type",readMsgsFromFile[0][3]);
                values2.put("body","temp"); //this should be more unique
                values2.put("read",readMsgsFromFile[0][5]);
                values2.put("service_center","01010101");

                contentResolver.insert(Telephony.Sms.CONTENT_URI, values2);
            }

//Now deleting that message with body 'temp' from each conversationCursorc= contentResolver.query(Telephony.Sms.CONTENT_URI,null,null,null,null);
            while (c.moveToNext()){
                Stringbody= c.getString(c.getColumnIndex("body"));
                Stringmid= c.getString(0);
                if (body.equals("temp")){
                    Log.i("Deleting ",mid);
                    getContentResolver().delete(Uri.parse(Telephony.Sms.CONTENT_URI+"/"+mid),null,null);
                }
            }
            c.close();

This word 'temp' could be and should be more unique so that it is not mixed with actual message.