I want a normal segue, so no pop-up. But when I push the button to go to the next ViewController, it shows as ab pop-up. The buttons to the next ViewController is in a different storyboard than the ViewController I'd like to go to.
This is the code of the first ViewController:
import UIKit
//some other code
class LoginViewController: UIViewController {
//some other code
override func viewDidLoad() {
super.viewDidLoad()
//some other code
}
#objc private func ProceedTapped(){
//Door naar storyboard van de daadwerkelijke app
print("Proceed clicked")
performSegue(withIdentifier: "goToAppIdentifier", sender: self)
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
}
}
And this is the code of the ViewController I'd like to go to:
import UIKit
class HomeScreen: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
print("Home has loaded")
}
}
The kind of the segue of the "Storyboard Segue" is "Show (e. g. push)"
You just have to go to story board select the 2nd view controller and change presentation style to "Full Screen". Please check below image for reference
Related
I have a View Controller with a button..
This button calls a "Present as Popover Seague" to a second view controller.
The second view controller has a close button with this function:
#IBAction func exit(_ sender: UIButton) {
self.dismiss(animated: true, completion: nil)
}
Now I would like to do something in the first controller, after the second Controller is dismissed.
In the first view controller I tried this functions:
override func viewDidAppear(_ animated: Bool) {
print("viewDidAppear")
}
override func viewWillAppear(_ animated: Bool) {
print("viewWillAppear")
}
but no console log will shown.
Where is my mistake?
FirstViewContorller
import UIKit
class firstVC: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//ERROR
secondVC.dismissCompletion = {
print("dismissCompletion")
}
}
}
SecondVC (popover)
import UIKit
class secondVC: UIViewController {
var dismissCompletion: (() -> Void)?
// EXIT POPOVER
#IBAction func exit(_ sender: UIButton) {
self.dismiss(animated: true, completion: dismissCompletion)
}
}
The viewDidAppear() method of the main view controller won't be called because of the popover presentation style you use. If you choose to present the second view controller full screen - those methods will fire.
If we're sticking with the popover, the first thing you need to do is in your second view controller, the one that's being presented, add a property for a closure that will be executed upon its dismiss:
class PopoverViewController: UIViewContoller {
var dismissCompletion: (() -> Void)?
#IBAction func exit(_ sender: UIButton) {
self.dismiss(animated: true, completion: dismissCompletion)
}
}
And in your main view controller you define what needs to be done upon the popover's dismiss:
popoverViewContoller.dismissCompletion = {
// do stuff
}
UPDATE:
I assume you've setup the segue in your storyboard. I also assume that in your storyboard you've given the view controllers their respective class names:
This is what your code should look like:
class FirstViewController: UIViewController {
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard let secondVC = segue.destination as? SecondViewController else {
return
}
secondVC.dismissCompletion = {
print("Popover dismissed")
}
}
}
class SecondViewController: UIViewController {
var dismissCompletion: (() -> Void)?
#IBAction func exit(_ sender: Any) {
dismiss(animated: true, completion: dismissCompletion)
}
}
Please note the classes naming and the way I got the secondVC instance.
In my project there is a Segue Show(e.g. Push). After clicking the mainButton, TabBarController is presented. When I choose the second tab, the method setButtonsTitle is called and when I swipe the TabBarController down, I can see "item 2" instead of the "Button" title (default title). But when I click the first tab afterwards and swipe the TabBarController down, it remains "Button". My first thought was that the method does not get called, but this is not true (checked in debugger). Also, print(title) shows "Item 1".
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var mainButton: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let destination = segue.destination as! TabBarController
destination.selectionDelegate = self
}
}
extension ViewController : ButtonThings {
func setButtonsTitle(title: String){
mainButton.titleLabel?.text = title
print(title)
}
}
And the TabBarController:
import UIKit
class TabBarController: UITabBarController {
weak var selectionDelegate: ButtonThings?
override func viewDidLoad() {
super.viewDidLoad()
}
//MARK: UITabBarController
override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
selectionDelegate?.setButtonsTitle(title: item.title ?? "no title")
}
}
protocol ButtonThings : class {
func setButtonsTitle(title: String)
}
I was able to reproduce that issue that you had mentioned. I then set the button type to custom and the button title started showing correctly.
Hope this helps.
I have an app with 6 UIViewControllers.
ANY viewcontroller features a function like this one:
#IBAction func onHelp(_ sender: UIBarButtonItem) {
DispatchQueue.main.async(execute: { () -> Void in
let helpVC = self.storyboard?.instantiateViewController(withIdentifier: "Help") as! HelpViewController
helpVC.starter = "MapHelp"
helpVC.helpSubtitle = "Map"
self.present(helpVC, animated: true, completion: nil)
})
}
Any IBAction in any viewcontroller presents the same HelpViewController but passing different parameters (starter and helpSubtitle).
Since I don't like to repeat code, first of all I thought this function should be converted to something more generic.
But: is there any way to create a generic IBAction, working for every viewcontroller?
Create a BaseViewController and add the generic method there.
class BaseViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func genericMethod(starter: String, helpSubtitle: String){
let helpVC = self.storyboard?.instantiateViewController(withIdentifier: "Help") as! HelpViewController
helpVC.starter = starter
helpVC.helpSubtitle = helpSubtitle
self.present(helpVC, animated: true, completion: nil)
}
#IBAction func onHelp(_ sender: UIButton?) {
//You can use this method as generic IBaction if you want. It can be connected to buttons of all child View Controllers. But doing so will limit your param sending ability. On the plus side though, you won't have to define an IBAction everywhere and you can simply connect your child VC's button to Parent Class' IBAction.
}
}
Now inherit your ViewControllers from this class like:
import UIKit
class ViewController: BaseViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
#IBAction func btnTapped(_ sender: Any) {
genericMethod(starter: "View Controller", helpSubtitle: "I was triggered from VC1")
}
}
and
import UIKit
class SecondViewController: BaseViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
#IBAction func btnTapped(_ sender: Any) {
genericMethod(starter: "View Controller 2", helpSubtitle: "I was triggered from VC2")
}
}
That's it. Both your ViewControllers can call the parent method. If you still want to use the generic IBAction, you can do that too but I'd not recommend that course given that you want to pass params that can vary. If you wanted to do it though, it would look like this:
Bear in mind, the ViewController here has been inherited from the base ViewController which is why it can access the IBActions defined in the parent class. All you have to do is drag and connect.
I'm developing an app for iPad Pro. In this app, containerView use to add additional views and interact with them.
First, I created a protocol:
protocol DataViewDelegate {
func setTouch(touch: Bool)
}
Then, I created my first view controller
import UIKit
class ViewController: UIViewController, DataViewDelegate {
#IBOutlet var container: UIView!
#IBOutlet var labelText: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
}
func setTouch(touch: Bool) {
if touch == true {
labelText.text = "Touch!"
}
}
}
And finally, I created a view that will be embedded in containerView.
import UIKit
class ContainerViewController: UIViewController {
var dataViewDelegate: DataViewDelegate?
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func touchMe(sender: AnyObject) {
dataViewDelegate?. setTouch(true)
}
}
But for some reason, nothing happened, the first view controller receives nothing in setTouch function.
My question is: In this case, using container, how can I make the communication between two ViewsControllers?
Like #nwales said you haven't yet set the delegate. You should do set the delegate in prepareForSegue function on your first viewController (who contain the viewContainer)
First select the embed segue and set an identifier in the attributes inspector.
Then in the parentViewController implement the func prepareForSegue like this:
Swift 4+:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "the identifier") {
let embedVC = segue.destination as! ViewController
embedVC.delegate = self
}
}
Below:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
if (segue.identifier == "the identifier") {
let embedVC = segue.destinationViewController as! ContainerViewController
embedVC.dataViewDelegate = self
}
}
Looks like you defined the delegate, but have not set the delegate. This happens to me all the time.
In a storyboard i have a view controller which has a segue to another viewcontroller, with the "Present As Popover" applied. If i don't add any code, this works as id expect.
Issue:
I need to get the delegate working so i can get data back from the popover. I have created the delegate in the popover.
I have added
class LoginView: UIViewController,UIPopoverPresentationControllerDelegate, UIPopoverControllerDelegate,KeypadDelegate
I have added the functions to my main view controller.
Issue i have is how to set the delegate on the segue.
i have tried
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "KeyPadLoad"
{
let popoverViewController = segue.destinationViewController as! UIViewController
popoverViewController.modalPresentationStyle = UIModalPresentationStyle.Popover
popoverViewController.popoverPresentationController!.delegate = self
}
}
The segue is defiantly called KeyPadLoad but when the delegate functions should be called in the popover nothing happens.
What am i doing wrong
Thanks
You have to implement the UIPopoverPresentationControllerDelegate in the class that presents the Popover. The methods of the UIPopoverPresentationControllerDelegate protocol let you customize the behavior of a popover-based presentation.
If you have set a segue to go to the Popover and you set the segue as Present as Popover then your class has to be like this :
class ViewController: UIViewController, UIPopoverPresentationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var popOver = segue.destinationViewController as! PopOverViewController
popOver.popoverPresentationController!.delegate = self
}
// Tells the delegate that the popover was dismissed.
func popoverPresentationControllerDidDismissPopover(popoverPresentationController: UIPopoverPresentationController) {
println("dismissed")
}
}
Where the class PopOverViewController is just an UIViewController that handle the Popover, no more, something like this code :
class PopOverViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
With the above code you should see the message:
dismissed
Every time that the PopOverViewController is dismissed.
I hope this help you.