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So I built a list of data grouped by devices where this data came from. Each device gets his own header in a TListView followed by its data. Pretty simple and straightforward. Now those lists may get long in total but also per device so I would like to be able to click on a header to collapse its list of data. I'm pretty sure VCL.TListView can do that. FMX.TListView...not so much. At least not that I'm aware of. I'm already having a hard time at getting the click event from a header. All TListViewItems with Purpose set to TListItemPurpose.Header sadly wont fire the OnItemClick event. Did I overlook something or other in the documentation? Anybody have a suggestion as to how this can be accomplished. Thanks in advance.