What actions are performed on a view before it is displayed on the screen when calling the viewWillAppear method?

The viewWillAppear method is called before the view of the controller appears on the screen. At this moment, actions necessary for preparing the interface for display are performed:

• Updating data that should be visible to the user.
• Configuring interface elements (e.g., hiding or showing buttons, updating text).
• Starting animations or updating UI state.
• Changing orientation or other view parameters.

It is important that at this moment, the view is already loaded but not yet displayed, making it a suitable place to update the UI before showing.

Example:

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    // Update data
    tableView.reloadData()
    // Configure navigation bar
    navigationController?.setNavigationBarHidden(false, animated: animated)
}