ContentObservers are useless

Question

I would like to understand when the SPECIFIC element in the SMS or call log changed. It is quite easy to get a notification when something changes in the corresponding content provider, but the transition to a specific record is completely ineffective, since you need to support full mirroring of the storage, and then find out the difference. It is not only lame. What is the use of "something has changed in this table of 800 elements, but we will leave it to you to find out not only the element, but also the actual attributes / attributes for this element that have changed."

Perhaps someone smarter than me can tell me how to get a notification when the CONFIDENTIAL call log, SMS or contact record has changed. I would like to know when the contact provider will receive an update for display_name. Or when the contact is marked as "favorite."

I would like to know how to detect / get notifide when the contact provider receives an update for display_name or another attribute such as favorites. My service is interested in these changes, as it will do something in response to these changes.

Answer 1

ContentObservers cannot be notified for a SPECIFIC element in SMS or call log.

The only way to get notified for a SPECIFIC element is to make changes to the SMS or Call Log ContentProvider code for nofifyChanges to use a separate element (ContentResolver.notifyChange).