Ios 将数据从CollectionView传递给TabBarController，而不是Swift中的孩子

我不熟悉斯威夫特。无法找到以下问题的解决方案。 下面是一个带有CollectionView的ViewController，当您单击CollectionView中的单元格时，单元格中的数据（即使该单元格不在标签和图像视图中，但在书本数组行中）必须发送到TabBarCollection，而不是TabBarCollection，我需要将该数据发送到所有子单元格，如下图所示。 稍后在TabBar的childs中，我将根据所选单元格中的数据设置视图控制器中标签的值。

斯威夫特

import UIKit

struct Book {
    let title: String
    let image: UIImage?
    //Here soon will be more "let", and this data will also have to be send to TabBar but it don't will be show I CollectionViewCell
}

extension Book {

    static let books: [Book] = [
    Book(title: "Antygona", image: UIImage(named: "imgantygona")!),
    //etc
    ]
}

CollectionViewCell.swift

import UIKit

class CollectionViewCell: UICollectionViewCell {

    @IBOutlet weak var bookImageView: UIImageView!
    @IBOutlet weak var bookTitle: UILabel!

    func setup(with book: Book) {
        bookTitle.text = book.title
        bookImageView.image = book.image
    }
}

视图控制器

import UIKit

class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {

    @IBOutlet weak var collectionView: UICollectionView!
    let books = Book.books

    override func viewDidLoad() {
        super.viewDidLoad()


        let fontAttributes = [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 16.0)]
        UITabBarItem.appearance().setTitleTextAttributes(fontAttributes, for: .normal)

        collectionView.dataSource = self
        collectionView.delegate = self      

    }

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return books.count
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "bookCell", for: indexPath) as! CollectionViewCell

        let book = books[indexPath.item]
        cell.setup(with: book)

        return cell
    }
}

我看到了很多解决方案，但我不能完全适应我的问题( 谢谢你的帮助

bookindeviewcontroller.swift

import UIKit

class BookInsideViewController: UIViewController {

    @IBOutlet weak var testImageView: UIImageView!
    @IBOutlet weak var testLabel: UILabel!


    override func viewDidLoad() {
        super.viewDidLoad()

    }
}

---

您可以使用collection view DidSelectItemAt函数

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {


    let storyboard = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = storyboard.instantiateViewController(withIdentifier: "YourtabbarIdentifier") as! UITabBarController

// You should access the `imageController` through your `tabBarController`, 
// not instantiate it from storyboard.
if let viewControllers = tabBarController.viewControllers, 
   let imageController = viewControllers.first as? ImageController {
    BookInsideViewController.recivedData1 = Books[indexPath.row]
}

navigationController?.pushViewController(tabBarController, animated: true)

}

---

谢谢。我将TabBar中的情节提要ID设置为“bookTabBar”，然后将其替换为“YourTabbariIdentifier”，但现在我遇到了“使用未声明的类型“ImageController”和未解析的标识符“Books”的问题，我不知道如何按您所说的做”您应该通过

tabBarController

访问

imageController

，而不是从故事板中实例化它。“您能告诉我怎么做吗？谢谢您的帮助：）