While editing with Collector for ArcGIS (Android), opening and closing a nullable field without entering a value causes the following error, "Popups contain invalid value."
上次发布: August 8, 2017Collector Classic for ArcGIS (Android)
Not reproducible for the current release of Collector for ArcGIS on Android version 17.0.2.
解决办法
Do not click the fields that are set to allow NULL value as 'true', and click Submit. This takes the value as NULL, and the web map is saved without any issues.