I am writing an app that runs on both iOS and macOS, using Mac Catalyst with Swift.
I want to set a property that is only available on macOS but I cannot find a way using #available
or @available
to prevent the compiler from including this line of code in the iOS builds:
This syntax does not work because the mandatory trailing *
includes all iOS versions.
if #available(macCatalyst 13.0, *) {
view.showsZoomControls = true
}
I tried adding a nonsense version of iOS using iOS 999
but that didn't work either, because the property is marked strictly unavailable in iOS.
Using @available
there's a longhand syntax using introduced:
that allows per-OS versions to be specified and requires a separate @available
entry per OS but I can't see any way to use that. It seems you can't use @available
on a block of code.
Is there really no sane way to do this?
For reference, the definition of this specific property is:
@property (nonatomic) BOOL showsZoomControls
API_AVAILABLE(macos(10.9), macCatalyst(13.0))
API_UNAVAILABLE(ios, watchos, tvos);
CodePudding user response:
Crisis averted - it seems that available
is the wrong hammer for this nail.
What's working for me now is the much simpler:
#if os(macOS)
view.showsZoomControls = true
#endif
CodePudding user response:
You can identify/restrict Mac Catalyst with target environment
#if targetEnvironment(macCatalyst)
view.showsZoomControls = true
#endif