ios - Using IBoutlet in constant initalization -
i want utilize iboutlet mapview in mapmanager. realise connection have nowadays mapview mapmanager. thought work:
@iboutlet var mapview: mkmapview! var locationmanager = cllocationmanager() var userlocation: mkuserlocation! allow mapmanager: mapmanager = mapmanager(mapview : mapview)
now, wonder if right way it. mean, going utilize mapview in model isn't best thing do. how realise idea?
i think code should not compile, because when initializing mapmanager
implicitly referencing self
, unavailable until class properties have been initialized.
i solve problem defining implicitly unwrapped mapmanager
property:
var mapmanager: mapmanager!
which initialized when mapview
set:
@iboutlet var mapview: mkmapview! { didset { self.mapmanager = mapmanager(mapview: mapview) } }
of course of study before referencing mapmanager
have sure mapview
has been initialized, otherwise runtime exception raised.
ios xcode swift
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