Environment is iOS 12.4.1 on iPhoneXs
XCode 11.1, simulator IOS 13.1
I am implementing peekView in a VC.
I registerForPreviewing in viewDidLoad as advised.
if traitCollection.forceTouchCapability == .available {
registerForPreviewing(with: self, sourceView: view)
}
This works OK on simulator.
But on device, register is not called.
I tested traitCollection.forceTouchCapability : .unknown.
What is surprising:
- it works on simulator
- if I move this code to viewWillAppear, it works OK
- I have the similar code in a TableViewController: it works within viewDidLoad
I noted that registerForPreviewing is deprecated, but that should not prevent traitCollection.forceTouchCapability to be .available.
In such a case, do I need to unregister manually to avoid multiple registrations ? Or can I trust bthe system to do it for me ?