I have read a dozen posts on SO. Some of them suggest using Override, but I get a compile error as that function definition is now open.
self.user = user
performSegueWithIdentifier("selectPayment", sender: nil)
func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let vc = segue.destinationViewController as! SelectPaymentViewController
vc.user = user
}
that bottom function is never called. Why is this? Targeting iOS 9.2
This was just an issue with the calling syntax.
the correct implementation is
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
Related
In my swift app I've the following prepare function:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destination = segue.destination as? LocalPictureCVC {
destination.selectedLocal = selectedLocal
}
}
But when I try to use selectedLocal in LocalPictureCVC it crash due to selectedLocal is nil.
How can I solve this problem?
Try this I hope it will help you:-
first make sure to give segue properly with identifier then code like below
then in first ViewController
var valueToPassInSecondVC = ""
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
//NOTE:- make sure about your identifier is correct as well as destination ViewController
if segue.identifier == "yourIdentifierOfSegue" {
let destVC = segue.destination as! ContainerViewController
destVC.valueFromFirstVC = self.valueToPassInSecondVC
}
}
in your destination class
var valueFromFirstVC:String = ""
//In my case pass String from FirstViewController to SecondViewController
thanks,I hope it will help you.
try checking your segue identifier in your prepare function
if segue.identifier == "Something"
I'm trying to export my data from a ViewController to another with this code:
func prepare(for: UIStoryboardSegue, sender: AnyObject?){
let desty : EndViewController = segue.destinationViewController as! EndViewController
desty.totalScore = scoreTotal.text!
}
But when I try to do that is turns me the error:
[Use of unresolved identifier 'segue']
But I've already done it as you can see here:image
So how can I solve it.
I will be so grateful if you help me.
Please, help a young programmer to learn.
First, perform your segues as below:
self.performSegue(withIdentifier: "YourSegueID", sender: self)
Now, call prepareForSegue and change the values in destination accordingly:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "YourSegueID" {
let vc = segue.destination
vc.yourVariable = "Some Value"
}
}
You are using the wrong function. It should be...
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue" {
}
}
The internal parameter label segue is missing in the first parameter and the type of the second parameter is wrong.
Please use code completion
Comment out your entire method
// func prepare(for: UIStoryboardSegue, sender: AnyObject?){
// let desty : EndViewController = segue.destinationViewController as! EndViewController
// desty.totalScore = scoreTotal.text!
// }
Type prep, you will see
Choose the proper line and press return.
Copy the body of the former method into the new one.
Thanks for your time. I have a fully functional application there is this one segue that when selected it segues to the starting controller. This happens only when the app is installed and its the first time calling this segue. it doesnt happen if you close and open the app and it never happens again after that.
Scenario:
Login Successful (Segues to TabController)
Then on the 3rd Tab I have cells and when the cell is clicked it segues back to the LoginController (Should Segue to DiscoverController)
This is done with a self.performSegue(withIdentifier: "segDiscover", sender: nil)
The discoverController is never hit
The LoginController override func viewWillAppear(_ animated: Bool) is fired
I use the method override func prepare(for segue: UIStoryboardSegue, sender: Any?)
I have debugged in the simulator and the methods fire and follow through right until it leaves the controller and hits the LoginController
Any assistance would be greatly appreciated. The code below is the override func prepare(for segue: UIStoryboardSegue, sender: Any?)
Code Snip-it
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segDiscover"{
if(self._refresh.isRefreshing == false){
searchBar.text = ""
searchBarHeight.constant = 0
self.searchBarCancelButtonClicked(searchBar)
self.view.endEditing(true)
let Controller = segue.destination as! DiscoverVC
}
}
}
Thanks for your time
I am trying to pass a users id to a container view by preparing for a segue
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "childSegue" {
if let destinationVC = self.childViewControllers.first as? InterestCollectionController {
destinationVC.currentUser = self.currentUser
}
}
}
however, this is not working. I have my storyboard that looks like this.
storyboard I have also tried using segue.destination as! InterestCollectionController and that did not work either. From my understanding this is the way I should be passing data to my container view. Any help is appreciated thanks!
Just try this without using if statement:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "childSegue" {
let destinationVC = segue.destinationViewController as InterestCollectionController
destinationVC.currentUser = self.currentUser
}
}
1. Make sure your segue identifier matches with storyboard identifier.
2. Also verify once you have given exact segue to the above mentioned controller in storyboard.
Try this one
var destinationVC : InterestCollectionController?
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "childSegue") {
self.destinationVC = segue.destination as? InterestCollectionController
destinationVC.currentUser = self.currentUser
}
}
I tested that the view of the embedded view controller is not loaded, in other words, the viewDidLoad() was not invoked, before the containerVC's prepare() was called.
Therefore, you cannot directly pass data to the destination view controller inside the prepare() function.
Technologies: Swift, iOS8, XCode 6
I have a function like this;
override func prepareForSegue(segue: UIStoryboardSegue,
sender: AnyObject?)
where my identifier is
if segue.identifier == "showDetail"
I want to initiate that function on saveAction. I was working with peformSegueWithIdentifier but it keeps failing. I just want to be able to call/initiate that function once I perform my saveAction. My saveAction appears in a pop-up so I'm not sure if that is causing issues.
--- UPDATE
So, I can get it to segue to the detailview after save by doing something like this
func saveAction() {
if saved == true {
performSegueWithIdentifier("showDetail", sender: self)
}
}
But, the code I have in my prepareForSegue function, doesn't seem to get hit. Does this get bypassed? I'd like the prepareForSegue function to still implement its changes.
override func prepareForSegue(segue: UIStoryboardSegue,
sender: AnyObject?) {
if segue.identifier == "showDetail" {
do stuff here, like make the title of the ShowDetail view blue, etc..
}