文本搜索阻止重新加载Swift中表视图中的所有数据

import UIKit

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate {
    @IBOutlet weak var tableView: UITableView!
    @IBOutlet weak var searchBar: UISearchBar!
    
    var data = ["Apple", "Banana", "Orange", "Mango", "Grape"]
    var filteredData = [String]()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.dataSource = self
        tableView.delegate = self
        searchBar.delegate = self
        
        filteredData = data // 初始时显示全部数据
    }
    
    // UITableViewDataSource
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return filteredData.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        cell.textLabel?.text = filteredData[indexPath.row]
        return cell
    }
    
    // UISearchBarDelegate
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        filteredData = data.filter { $0.contains(searchText) }
        tableView.reloadData()
    }
}