将 TitleLabel 从 UIButton 发送到不同 UIView 控制器中的 UILabel,但未发送 [英] Send TitleLabel from UIButton to a UILabel in a different UIView Controller, But it's not being sent
问题描述
我有一个 UIViewController,我试图将 UIButton 的 titleLabel 发送到不同 UIView 控制器中的 UILabel.
I have one UIViewController that I am trying to send the titleLabel of a UIButton to a UILabel held within a different UIView Controller.
我遵循了与以前的方法相同的步骤和模式,效果很好,但标题文本没有传递到下一个 VC.
I have followed the same steps and pattern as within a previous method that worked fine, but the Title Text is just not getting passed onto the next VC.
我有一个名为 MtsCardsButton 的 Button 类,但这只是设置按钮的动画和外观.
I have a Button class called MtsCardsButton, but this just sets the animation and appearance of the button.
感谢您的审核.
这是我在第一个 VC 中的 Button 代码:
Here is my code for the Button in the first VC:
import UIKit
class MTSCardsPage: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//This is to make mtsCardsSetArray available to this ViewController
let otherVC = MTSDiscriminators()
mtsCardsSetArray2 = otherVC.mtsCardsSetArray
let otherVC2 = MTSDiscriminators()
allMtsDescriminatorsArray2 = otherVC2.allMtsDescriminatorsArray
//Set Card Titles from Array
Card1ButtonOutlet.setTitle(mtsCardsSetArray2[0], for: .normal)
Card2ButtonOutlet.setTitle(mtsCardsSetArray2[1], for: .normal)
Card3ButtonOutlet.setTitle(mtsCardsSetArray2[2], for: .normal)
Card4ButtonOutlet.setTitle(mtsCardsSetArray2[3], for: .normal)
Card5ButtonOutlet.setTitle(mtsCardsSetArray2[4], for: .normal)
//Do any additional setup after loading the view.
}
var mtsCardsButton = MtsCardsButton()
func addActionToMtsCardsButton() {
mtsCardsButton.addTarget(self, action: #selector(CardButton), for: .touchUpInside)
}
//This is to TELL the Button to do something AND to goto
//the MTS Discriminators UIView.
var cardButtonPressed = ""
@IBAction func CardButton(_ sender: MtsCardsButton) {
let secondVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(identifier: "DiscrimUIViewCollection") as! DiscrimUIViewCollection
cardButtonPressed = sender.currentTitle!
secondVC.updateTheLabel2 = cardButtonPressed
////I'VE TRIED THIS SECTION INSTEAD OF ABOVE AND IT STILL DOESN'T WORK.
// func prepare(for segue: UIStoryboardSegue, sender: Any?)
// {
// if segue.destination is DiscrimUIViewCollection
// {
// let vc = segue.destination as? DiscrimUIViewCollection
// vc?.updateTheLabel2 = cardButtonPressed
// }
// }
//switch area to make button move when pressed
switch cardButtonPressed {
case mtsCardsSetArray2[0]:
Card1ButtonOutlet.shakeMtsCardsButton()
case mtsCardsSetArray2[1]:
Card2ButtonOutlet.shakeMtsCardsButton()
case mtsCardsSetArray2[2]:
Card3ButtonOutlet.shakeMtsCardsButton()
case mtsCardsSetArray2[3]:
Card4ButtonOutlet.shakeMtsCardsButton()
case mtsCardsSetArray2[4]:
Card5ButtonOutlet.shakeMtsCardsButton()
default:
print("Error, unrecognised button pressed!")
}
guard let destinationVC = storyboard?.instantiateViewController(withIdentifier: "DiscrimUIViewCollection") as? DiscrimUIViewCollection else {
return
}
present(destinationVC, animated: true, completion: nil)
}
//Outlet for sending anything to the MTS Card Button
@IBOutlet weak var Card1ButtonOutlet: MtsCardsButton!
@IBOutlet weak var Card2ButtonOutlet: MtsCardsButton!
@IBOutlet weak var Card3ButtonOutlet: MtsCardsButton!
@IBOutlet weak var Card4ButtonOutlet: MtsCardsButton!
@IBOutlet weak var Card5ButtonOutlet: MtsCardsButton!
}
这是第二个接收VC的代码:
Here is the code for the second receiving VC:
class DiscrimUIViewCollection: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet weak var discriminatorTitle: UILabel!
var updateTheLabel2: String?
@IBAction func discrimButtonPressed(_ sender: UIButton) {
//action here to name what discriminator means.
print(sender.currentTitle!)
}
@IBOutlet weak var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
Card1ButtonOutlet.setTitle(mtsCardsSetArray2[0], for: .normal)
Card2ButtonOutlet.setTitle(mtsCardsSetArray2[1], for: .normal)
Card3ButtonOutlet.setTitle(mtsCardsSetArray2[2], for: .normal)
Card4ButtonOutlet.setTitle(mtsCardsSetArray2[3], for: .normal)
Card5ButtonOutlet.setTitle(mtsCardsSetArray2[4], for: .normal)
collectionView.dataSource = self
collectionView.delegate = self
self.collectionView.backgroundColor = .black
discriminatorTitle.text = updateTheLabel2
discriminatorTitle.font = UIFont(name: "Mukta Mahee", size: 18)
discriminatorTitle.font = UIFont.boldSystemFont(ofSize: 18)
discriminatorTitle.numberOfLines = 2
discriminatorTitle.minimumScaleFactor = 0.1
discriminatorTitle.baselineAdjustment = .alignCenters
discriminatorTitle.textAlignment = NSTextAlignment.center
discriminatorTitle.clipsToBounds = true
discriminatorTitle.backgroundColor = colourYellow
discriminatorTitle.textColor = .black
discriminatorTitle.layer.borderColor = UIColor.black.cgColor
discriminatorTitle.layer.borderWidth = 2.0
discriminatorTitle.layer.cornerRadius = 7
discriminatorTitle.layer.shadowColor = UIColor.black.cgColor
discriminatorTitle.layer.shadowOffset = CGSize(width: 0.0, height: 6.0)
discriminatorTitle.layer.shadowRadius = 7
discriminatorTitle.layer.shadowOpacity = 0.5
discriminatorTitle.clipsToBounds = false
discriminatorTitle.layer.masksToBounds = true
let layout = self.collectionView.collectionViewLayout as! UICollectionViewFlowLayout
layout.sectionInset = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
layout.minimumInteritemSpacing = 2
layout.itemSize = CGSize(width: (self.collectionView.frame.size.width - 0)/1, height:self.collectionView.frame.size.height/3)
//Do any additional setup after loading the view.
func numberOfSections(in collectionView: UICollectionView) -> Int {
// 1
return 1
}
}
推荐答案
因此,经过数小时研究各种网站后,我找到了答案.我需要添加代码并重新定位代码.我更改了 Storyboard ID 以匹配 DiscrimUIViewCollection.swift 文件.
So, after many hours of studying up various websites I found the answer. I needed to add code and re-position the code. I Changed the Storyboard ID to match the DiscrimUIViewCollection.swift file.
我将以下代码放在 MTSCardsPage.swift 文件中switch"语句的底部.
I place the following code at the bottom of the 'switch' statement in the MTSCardsPage.swift file.
//To capture the card title and store it for
//preparation for changing based on Label.
guard let DiscrimUIViewCollection : DiscrimUIViewCollection = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "DiscrimUIViewCollection") as? DiscrimUIViewCollection else {
return
}
DiscrimUIViewCollection.updateTheLabel = sender.currentTitle!
present(DiscrimUIViewCollection, animated: true, completion: nil)
}
令我高兴的是,一切正常!我曾经对我帮助最大的网站是这个:https://fluffy.es/3-ways-to-pass-data-between-view-controllers/
And to my delight, it all works fine! The website I used to help me the most was this one: https://fluffy.es/3-ways-to-pass-data-between-view-controllers/
感谢你们的帮助,每一条评论都让我深思.
这是一个很大的学习曲线!
Thanks for your assistance guys, each little comment made me think.
It's big learning curve!
这篇关于将 TitleLabel 从 UIButton 发送到不同 UIView 控制器中的 UILabel,但未发送的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!