I am trying to implement state restoration in my app, I've read through numerous articles and documentation but so far I have not been able to get it working. I have given all view controller a restoration ID, and (I think) have all the necessary functions to get it to work.
in AppDelegate
func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
return true
}
func application(_ application: UIApplication, shouldRestoreSecureApplicationState coder: NSCoder) -> Bool {
return true
}
func application(_ application: UIApplication, shouldSaveSecureApplicationState coder: NSCoder) -> Bool {
return true
}
func application(_ application: UIApplication, viewControllerWithRestorationIdentifierPath identifierComponents: [String], coder: NSCoder) -> UIViewController? {
return coder.decodeObject(forKey: "Restoration ID") as? UIViewController
}
func application(_ application: UIApplication, didDecodeRestorableStateWith coder: NSCoder) {
UIApplication.shared.extendStateRestoration()
DispatchQueue.main.async {
UIApplication.shared.completeStateRestoration()
}
}
in my view controller:
override func encodeRestorableState(with coder: NSCoder) {
super.encodeRestorableState(with: coder)
getSetDataFromTable()
coder.encode(currentSession, forKey: "CurrentSession")
}
override func decodeRestorableState(with coder: NSCoder) {
super.decodeRestorableState(with: coder)
self.currentSession = coder.decodeObject(forKey: "CurrentSession") as! [CurrentSessionElement]
}
override func applicationFinishedRestoringState() {
tableView.reloadData()
}
static func viewController(withRestorationIdentifierPath identifierComponents: [String], coder: NSCoder) -> UIViewController? {
guard let restoredSession = coder.decodeObject(forKey: "CurrentSession") as? [CurrentSessionElement] else {
print("decoding user detail")
return nil
}
let vc = CurrentSessionVC()
vc.currentSession = restoredSession
return vc
}
I set breakpoints in all the functions and when I try to test the functionality the breakpoints that hit are
when loading:
shouldRestoreSecureApplicationState
didDecodeRestorableStateWith
when clearing the app:
shouldSaveSecureApplicationState
Nothing is restoring when tested, and none of the view controller functions are being triggered, am I missing something?
