Arrays Swift，Firebase：如何将模型对象的数组插入（而不是附加）到不同的数组中

我的Firebase数据库中有一系列的类别和一系列的体育爱好。我在视图加载时获取它们，并将它们分别附加到

categoriesArray=[cabiods]

和

sportsaray=[cabiods]

中

我的问题是，在我的didSelectItemAtIndexPath方法中，我想插入，而不是将所有的sportsArray追加到运动的indexPath处的categoriesArray中，但我要么得到一个错误，说它无法转换[爱好]的值类型更改为预期的参数类型或错误，表示希望插入字符串数组。我该怎么做？谢谢你们。。。意义重大

我的数据库：

import UIKit
import Firebase

class Hobbies: NSObject {

    var hobbieName: String?
}

private let reuseIdentifier = "Cell"

class CategoriesView: UICollectionViewController, UICollectionViewDelegateFlowLayout {

    var categoriesArray = [Hobbies]()
    var sportsArray = [Hobbies]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.navigationController?.navigationBar.tintColor = .white
        navigationItem.title = "Hashtag"

        self.collectionView?.backgroundColor = .white
        self.collectionView?.register(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
        self.collectionView?.contentInset = UIEdgeInsetsMake(10, 0, 0, 0)

        handleFetchCategories()
        handleFetchSports()
    }

    func handleFetchCategories() {

        let ref = FIRDatabase.database().reference().child("categories")

        ref.observe(.childAdded, with: { (snapshot) in

            if let hobbieNames = snapshot.value as? String {

                let hobbie = Hobbies()

                hobbie.hobbieName = hobbieNames

                self.categoriesArray.append(hobbie)
            }

            DispatchQueue.main.async {
                self.collectionView?.reloadData()
            }

        }, withCancel: nil)
    }

    func handleFetchSports() {

        let sportsRef = FIRDatabase.database().reference().child("sports")

        sportsRef.observe(.childAdded, with: { (snapshot) in

            if let sportsNames = snapshot.value as? String {

                let hobbie = Hobbies()

                hobbie.hobbieName = sportsNames

                self.sportsArray.append(hobbie)
            }

        }, withCancel: nil)
    }

    func insertElementAtIndexPath(element: [String], index: Int) {
        categoriesArray.insert(contentsOf: element, at: index)
    }

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

        if indexPath.item == 1 {
            insertElementAtIndexPath(element: sportsArray, index: indexPath.item + 1)

            self.collectionView?.performBatchUpdates(
                {
                    self.collectionView?.reloadSections(NSIndexSet(index: 0) as IndexSet)
            }, completion: { (finished:Bool) -> Void in

            })
        }

    }

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

问题 您尝试在此处将

字符串数组插入到
爱好数组中

func insertElementAtIndexPath(element: [String], index: Int) {
    categoriesArray.insert(contentsOf: element, at: index)
}

解决方案
只需将
insertElementAtIndexPath（元素：index:）
参数中的数组类型更改为
嗜好

func insertElementAtIndexPath(element: [Hobbies], index: Int) {
    categoriesArray.insert(contentsOf: element, at: index)
}