Reload MainViewController when PopViewController dismissed - swift

Question

I have a main view controller and pop up controller.Please refer screen shots.
Code :
#IBAction func show(sender: AnyObject) {
var popView = popupviewcontroller(nibName:"popview",bundle:nil)
var popController = UIPopoverController(contentViewController: popView)
popController.popoverContentSize = CGSize(width: 450, height: 450)
popController.presentPopoverFromRect(sender.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Down, animated: true)
}
For the popupViewcontoller i used .xib.
When press save button data saved to core data.
Lets come to my problem, in my mainViewController i fetched data and fill them in dynamically created lables.That occurred when view load.I want to reload mainViewController when close button form popViewController pressed.
I tried within the close button my code are here, i just tried to reload the mainVc :
var mainVC = mainviewcontroller()
#IBAction func close(sender: AnyObject) {
self.dismissViewControllerAnimated(true, completion: nil)
//mainVc.viewDidLoad()
mainVC.reloadInputViews()
}
Does not give output.
Conclusion : I want a way to refresh view controller from another view in swift.
Thanks in advance.

Answer 1

Using UITableView only we can reload the data!,So we have to use table view custom cell textfield or Label. Now we can able to reload our custom textfield data.

Answer 2

Does your main ViewController use a UITableView?
You can use viewWillAppear and get the data again and use tableView.reloadData() to reload the data.
EDIT:
with var mainVC = mainviewcontroller() you're just making a new instance of your MainViewController. If you want to use reloadInputViews(), you can put it in viewWillLoad.

Answer 3

You should use protocol for it. You can read more about protocols here https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Protocols.html
You can make protocol in PopViewController
protocol PopViewControllerProtocol {
static var valuesChanged()
}
Later you should implement this protocol in MainViewController and refresh data.
Example:
File UIPopoverController.swift
protocol UIPopoverControllerDelegate{
func valuesChanged(changedValue:String)
}
class UIPopoverController: UIViewController {
var delegate: UIPopoverControllerDelegate! = nil
#IBAction func close(sender: AnyObject) {
self.dismissViewControllerAnimated(true, completion: nil)
//mainVc.viewDidLoad()
mainVC.valuesChanged("some value")
}}
File MainViewController.swift
class MainViewController: UIViewController, UIPopoverControllerDelegate
{
func valuesChanged(changedValue:String) {
//this will be called when popuviewcontroller call valueschanged on delegate object
}
#IBAction func show(sender: AnyObject) {
var popView = popupviewcontroller(nibName:"popview",bundle:nil)
var popController = UIPopoverController(contentViewController: popView)
popController.delegate = self;
popController.popoverContentSize = CGSize(width: 450, height: 450)
popController.presentPopoverFromRect(sender.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Down, animated: true)
}
}

Answer 4

With God Grace i found a solution that is , just create a Global variable
Var fetchedArray = Nsarray()
Then Write the following code in the popovoer controller save button
func save(){
// Write codes for saving data
let request = NSFetchRequest(entityName: "Enitity name")
request.returnsObjectsAsFaults = false
let Total = try? context.executeFetchRequest(request)
if let wrapResults = Total {
fetchedArray = wrapResults
}
}
Then fill the Labels by using fetchedArray.
Thanks

Answer 5

Swift 2, try
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle
viewDidLoad()
return.None
Works for me