Flutter IconButton splashRadius theme

Question

How to change the splash Radius for all Icon buttons from the app theme not individually like this

IconButton(
onPressed: (){},
icon: Icon(Icons.keyboard_arrow_down_rounded),
splashRadius: 20,
),

Answer 1

According to documentation :

If null, default splash radius of Material.defaultSplashRadius is used.

You can't get it from a Theme : it's either the individual setting, either a Material constant.