In a ViewController, I'm trying to reload data in a TableView in another ViewController like so:
(self.presentedViewController as! tableViewController).table.reloadData()
Where tableViewController is the class in the TableView's controller (It's not upper camel case, I know) and table is the TableView. Well, doing this yields "fatal error: unexpectedly found nil while unwrapping an Optional value" and I guess that makes sense since the "presentedViewController" hasn't been loaded yet. I also tried this:
(self.navigationController!.viewControllers[self.navigationController!.viewControllers.count - 2] as! tableViewController).table.reloadData()
which yielded the same result (I made sure the tableViewController was under the current ViewController on the navigationController stack). I'm baffled about what I should do...I feel like it should be easier to refer to properties in different view controllers. I may be a little vague; if I am, tell me what you need to know!
Xcode 9 • Swift 4
Create a Notification Name:
extension Notification.Name {
static let reload = Notification.Name("reload")
}
You can post a notification
NotificationCenter.default.post(name: .reload, object: nil)
And add an observer at the view controller that you want to reload the data:
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(reloadTableData), name: .reload, object: nil)
}
@objc func reloadTableData(_ notification: Notification) {
tableView.reloadData()
}