One theme row of the picker; showing it sends nothing. setTheme applies
this row to the thread it belongs to: the thread id is the picker screen's
state, which the row reads as its host's, so the entry carries no copy of it
and the action has no argument of its own.
One theme row of the picker; showing it sends nothing.
setThemeapplies this row to the thread it belongs to: the thread id is the picker screen's state, which the row reads as its host's, so the entry carries no copy of it and the action has no argument of its own.