Swift: Reload a View Controller

Question

I need to refresh a view controller when a certain button is tapped. Simply activating viewDidLoad() does not seem to be working for what I need to do. However, when I leave the view controller then come back to it, it seems to work perfectly?

How can I refresh/reload a view controller as if I have left it then come back to it without ever actually leaving it?

Answer 1

Whatever code you are writing in viewDidLoad, Add that in viewWillappear(). This will solve your problem.

Answer 2

You shouldn't call viewDidLoad method manually, Instead if you want to reload any data or any UI, you can use this:

override func viewDidLoad() {     super.viewDidLoad();      let myButton = UIButton()      // When user touch myButton, we're going to call loadData method     myButton.addTarget(self, action: #selector(self.loadData), forControlEvents: .TouchUpInside)      // Load the data     self.loadData(); }  func loadData() {     // code to load data from network, and refresh the interface     tableView.reloadData() } 

Whenever you want to reload the data and refresh the interface, you can call self.loadData()