Is it possible to listen for when the active view changes?

[Maltezc]

Hi all, I have a pretty straight forward question.

As the post title suggests, is there a way to listen for when the active view changes? 

The closest thing I can come up with is getting all open UI views but that's not exactly a listener. 

[RPTHOMAS108 · Accepted solution]

You probably need to clarify slightly:

A change relating to switching between one view and another

A change of something within the current view

If it's the former then you have UIApplication.ViewActivatedEvent

if it's the latter then  you have  ApplicationServices.Application.DocumentChanged (1) used in combination with FilteredElementCollector (2) set to the current view. Then compare the results of Ids in event args from (1) with that of the filter (2).

[TorsionTools · Accepted solution]

See the API reference.

https://www.revitapidocs.com/2015/b208aae7-5cbf-21b4-b70e-af2e63ece383.htm