I'm attempting to create a variable "indexx" that will be segued to my next tableController. indexx will hold the indexPath of the selected cell from my collectionView, however, I am unsure which property to use. I am vastly more familiar with tableController properties so I'm having difficulty finding a successful solution to this piece of code. Would you happen to know my error?
As a quick note - foodcv is my collectionView and numberr is the variable in the second destination controller.
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destViewController = segue.destination as? foodtable {
let indexx = self.foodcv.indexPath(for: foodcell)
destViewController.numberr = indexx
}
}
let numberr : IndexPath = []
Maybe it's too late, but here you go:
Swift 4
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destViewController = segue.destination as? foodtable {
let indexPaths : NSArray = foodcv.indexPathsForSelectedItems! as NSArray
let indexx : IndexPath = indexPaths[0] as! IndexPath
destViewController.numberr = indexx[selectedindexPath.row]
}
}
Use this modified implementation,
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destViewController = segue.destination as? foodtable {
let indexx = self.foodcv.indexPathForCell(sender as! UICollectionViewCell)
destViewController.numberr = indexx
}
}
Related
I wonder how to pass the textField to my customTableViweCell. Please, someone help me! enter image description here
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue" {
let nextVC = segue.destination as! UINavigationController
let dest = nextVC.topViewController as! ViewController
let ind = sender as! customTableViewCell
let nTxt = nameTxt.text?.description
let pTxt = phoneTxt.text?.description
let eTxt = emailTxt.text?.description
let dTxt = dobTxt.text?.description
ind.lb1 = "\(nTxt!)"
ind.lb2 = "\(pTxt!)"
ind.lb3 = "\(eTxt!)"
ind.lb4 = "\(dTxt!)"
}
}
segue.destination will contain the destination view controller. You should cast it to your custom view controller that will be presented. That view controller, should have properties defined that will be used to build that view. You should set those properties in prepare so that when the destination view controller loads the view, those properties can be used to update the view components. Here's an example.
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue" {
let dest = segue.destination as? YourCustomViewController
dest?.customProp = someValue
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "stopRecording" {
let playSoundsVC = segue.destination as! PlaySoundsViewController
let recordedAudioURL = sender as! URL
playSoundsVC.receivedAudio = recordedAudioURL
}
}
The question is that my Xcode generating error
Value of type 'PlaySoundsViewController' has no member 'receivedAudio'
For this to work the destinationVC should look like this
class PlaySoundsViewController:UIViewController {
var receivedAudio:URL?
.....
}
I'm trying to build my first app with three tableViews which are hierarchical. The middle VC has two guard let in one prepare for segue function.
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard let destination = segue.destination as? AddMemberViewController else {
return
}
destination.club = club
guard let Destination = segue.destination as? TransactionViewController, let selectedRow = self.tableViewMember.indexPathForSelectedRow?.row else {
return
}
Destination.member = members[selectedRow]
}
That's how it looks like. Can I fix this, that both func get used by my app, because it just uses the one on the top.
The problem is if you want to segue to TransactionViewController the function already returns because segue.destination is not AddMemberViewController.
Instead you should give your segues different identifiers and ask for them in prepareForSegue. Something like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "AddMemberVCSegue" {
guard let destination = segue.destination as? AddMemberViewController else {
return
}
destination.club = club
}
if segue.identifier == "TransactionVCSegue" {
guard let Destination = segue.destination as? TransactionViewController, let selectedRow = self.tableViewMember.indexPathForSelectedRow?.row else {
return
}
Destination.member = members[selectedRow]
}
}
Just replace guards with if lets:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destination = segue.destination as? AddMemberViewController {
destination.club = club
} else if let destination = segue.destination as? TransactionViewController, let selectedRow = self.tableViewMember.indexPathForSelectedRow?.row {
destination.member = members[selectedRow]
}
}
prepare(for is called for one specific segue, so executing both guard let after another is unnecessarily expensive.
Usually you are checking the identifier of the segue with a switch statement, replace the literal identifiers with your real values
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
switch segue.identifier {
case "memberSegue":
let destination = segue.destination as! AddMemberViewController
destination.club = club
case "transactionSegue":
guard let selectedRow = self.tableViewMember.indexPathForSelectedRow?.row else { return }
let destination = segue.destination as! TransactionViewController
destination.member = members[selectedRow]
default: break
}
}
New to swift, hope I will get my answer. I need to pass NSArray to next view controller and in random order when button is pressed. I have UILabel and one variable declared in second view controller and segue seems working. Only peoblem is it does not pass any value. Here is my code.
#IBAction func ressedbutton(_ sender: Any) {
let quotes: NSArray = ["Quote 000", "Quote 001", "Quote 002"]
let range: UInt32 = UInt32(quotes.count)
let randomNumber = Int(arc4random_uniform(range))
let QuoteString = quotes.object(at: randomNumber)
// self.resul.text = QuoteString as? String
performSegue(withIdentifier: "showresult", sender: QuoteString)
let myVC = storyboard?.instantiateViewController(withIdentifier: "result") as! result
myVC.stringPassed =
(QuoteString as? String)!
}
and code for second view is
class result: UIViewController {
var stringPassed = ""
#IBOutlet weak var ResultLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
ResultLabel.text = stringPassed
I think my problem is in myvc.stringpassed=...? How to pass the arry I have and in randomly?
Thanks in Advance.
What you need to do is pass that value with sender in performSegue and after that access that value in prepare(for:sender:) and pass the value to destinationController.
performSegue(withIdentifier: "showresult", sender: QuoteString)
Now use this sender argument in prepare(for:sender:)
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? result, let data = sender as? String {
vc.stringPassed = data
}
}
You have to use prepare(for segue: UIStoryboardSegue, sender: Any?) method to assign data to toViewController.UIStoryboardSegue object segue have properties like identifier ,destination and source.
In this method first you check the identifier,if it matches cast the destination controller to your custom view controller and assign the data to the view controller object.
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showresult"{
if let toViewController = segue.destination as? result {
vc.stringPassed = QuoteString
}
}
}
try this way remove segue give Storyboard ID to your view controller where u want to pass data and paste that same Storyboard Id below (YourIdentifier)
#IBAction func ressedbutton(_ sender: Any) {
let quotes: NSArray = ["Quote 000", "Quote 001", "Quote 002"]
let range: UInt32 = UInt32(quotes.count)
let randomNumber = Int(arc4random_uniform(range))
let QuoteString = quotes.object(at: randomNumber)
// self.resul.text = QuoteString as? String
let vc = storyboard?.instantiateViewController(withIdentifier:"YourIdentifier") as! YourNextViewController
vc.stringPassed = (QuoteString as? String)!
self.present(vc, animated: true, completion: nil)
}
I've tried a lot of methods i couldn't get it to work
ViewController 1 have : Collectionview > Cell > image inside the cell
ViewController 2 want to display the image which in VC 1
When you click on cell it has segue to push you to VC 2
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "popup" {
let viewController: friendpopup = segue.destination as! friendpopup
let indexPath = sender as! NSIndexPath
let nicknamex = self.nicknameArray[indexPath.row]
let usernamex = self.userArray[indexPath.row]
let photox = self.friendsphotos[indexPath.row] // the photos PFFiles i think
viewController.snick = nicknamex
viewController.suser = usernamex
viewController.sphoto = // ????
}
nickname and user works fine only the image i couldn't display it.
I tried when you click on cell it will send the image to var but isn't working
var photovar:UIImage!
didSelectItemAt( self.photovar = cell.profilepic.image)
then in prepareSegue( viewcontroller.sphoto = self.photovar)
isn't woking, Anyone could help me to fix that to display the image? Thanks
Tightening up your code a bit....
First VC
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "popup" {
if let vc = segue.destination as? friendpopup {
let indexPath = sender as! NSIndexPath
vc.snick = self.nicknameArray[indexPath.row]
vc.suser = self.userArray[indexPath.row]
vc.sphoto = self.friendsphotos[indexPath.row]
}
}
}
Second VC:
// making assumptions on variable types
var snick:String!
var suser:String!
var sphoto:UIImage!
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// do work here
if sphoto != nil {
imageView.image = sPhoto
} else {
// set a default image here
}
}
Most of this is similar to your code, but one last note - if the first 2 properties are coming across correctly, check in the first VC that you are pulling the image out properly.