Good question...
ABMLabel has no events to raise (currently)...
https://www.b4x.com/b4j/help/abmaterial.html#abmlabel
I see where you are coming from thou... I use labels - in Android (
B4A) - and it's click event - like a button...
Before all those smart folks determined that any view object could have events, I guess, no one assumed a Label could be clicked on (why?). That's a button's job...
However, someone in our B4X community dev group thought otherwise... guess who (brings us this wonderfulness)...
I suggest you add it, as a request to feedback ( feature / upgrade / wish ) - else - use a button (disguised as a label) in the interim.