arcgis-collectorarcgis-online
I've been using ArcGIS collector for field surveys and measurements. I would like the app to automatically populate a field with latest update time when I enter values in the fields I'm interested in.
Is that possible? I'd like to avoid using tracking, which seem to be a possible workaround when googling.
My understanding is that the ArcGIS Attribute Assistant (AA) tool is an ArcGIS Desktop Add-In, that requires ArcGIS Desktop and .NET framework to run: http://solutions.arcgis.com/shared/help/attribute-assistant/#requirements
I do not think you can use AA in conjunction with ArcGIS Online. I was searching for similar thing a few months back and did not find anything. In my reading of the ESRI blog post you linked to I also didn't see anything that suggested ESRI was adding support for Attribute Assistant (AA) in ArcGIS Online, other than that someone asked about this in the comment section and the author responded that it was a good question and asked for additional use cases so he could understand how it would be used. So perhaps there may be something along the lines of this in future...
I can outline an approach we are currently implementing that would provide similar functionality as what you are looking for, but only for scenario where you are using Collector/ArcGIS Online in conjunction with editable feature services hosted from your own ArcGIS Server and ArcSDE database. If you are in control of the database to which Collector is writing data, you can set up database triggers that would run stored procedures whenever new row(s) are inserted/updated into the table that hold your editable feature layer. For example, a stored procedure can be used to assign an auto-incrementing ID field and then could also use SQL Spatial queries to lookup and assign the zip, map block, etc.... In our case, we wanted to make sure that data edited/added via web applications like (Collector, Web App Builder, etc..) would share same auto-populated fields rules that we had when editing the same layers using Desktop tools, and this database trigger approach offers this.
These were some examples on MS SQL Server approaches for stored procedures to create auto-incrementing ID with prefixes:
http://www.sqlteam.com/article/custom-auto-generated-sequences-with-sql-serverenter link description here
I don't have a quick link to examples of the type of SQL spatial queries you would need to use to look up the other attributes from other layers, but you could find examples elsewhere.
I tested Collector for ArcGIS recently and was able to download my map for offline use on an iPad 3 (iOS 9.3.x) and collect fire hydrant locations. I used it with a Dual GPS receiver. No enterprise DB or constant connection was needed and was able to sync back to ArcGIS online once the iPad was back on a wifi connection.
Do be careful which basemap you use within ArcGIS Online, as you may not be presented with the Offline option. I initially tried to use OSM as my basemap but was not presented with the offline option with advanced menu options until I chose an ESRI basemap.
Best Answer
Yup enable editor tracking on the service and that will collect the creator of the feature and the creation date along with the editor and the edit date. When a feature is updated multiple times the editor and the edit date fields will be updated to correspond with the most recent changes.