如何在tableview中搜索数据? [英] How to search data in tableview?

问题描述

我在本地文件中有数据，我已将它们加载到 tableView，现在我想通过搜索栏搜索/过滤.

I have data in local file, I have loaded them into the tableView, and now I want to search/filter via search bar.

我尝试了一些在 Internet 上找到的解决方案，但我不知道如何访问结构中的特定数据.

I have tried some solutions I've found on the Internet, but I don't know how to access specific data in my structure.

这是结构的一部分:

struct Model: Codable {
    var data: [Description]
}

struct Description: Codable {
    var id: Int
    var name: String
    var address: String
    var city: String
    var description: String
    var countryId: Int
    var webSite: String
    var status: Int
    var accountType: Int
    var addDate: String
    var placeGroupId: Int
    var longitude: Double
    var latitude: Double
    var distance: Double
    var working: Bool
    var promotion: String
    var repertoire: Repertoire
    var workingHour: WorkingHour
    var country: Country
    var reviewNum: Int
    var score: Double
    var placeImgUrl: String
}

var model: Model?

这是我的 ViewController 中的一些代码:

and here is some code from my ViewController:

var filteredObjects = [Description]()

let searchController = UISearchController(searchResultsController: nil)

func searchBarIsEmpty() -> Bool {
    return searchController.searchBar.text?.isEmpty ?? true
}

func filterContentForSearchText(_ searchText: String, scope: String = "All") {

}

extension ViewController: UISearchResultsUpdating {
    func updateSearchResults(for searchController: UISearchController) {
    <#code#>
    }
}

我有变量模型，它是结构模型的类型.结构模型有一个变量数据，它是结构描述类型.最后，在结构描述中我有变量名.我的 tableView 单元格显示模型的名称 (model?.data[indexPathrow.row].name).现在，我需要按 tableView 单元格中显示的名称进行搜索.我希望我解释清楚.非常感谢！

I have variable model, which is type of struct Model. Structure Model have a variable data which is type of struct Description. And finally, in structure Description I have variable name. My tableView cells shows names of models (model?.data[indexPathrow.row].name). Now, I need to search by names shown in tableView cells. I hope I explained it clearly. Thank You very much!

推荐答案

假设 objects 也是 [Description] 并且表示数据源数组

Assuming objects is also [Description] and represents the data source array

func updateSearchResults(for searchController : UISearchController)
{
    let searchString = searchController.searchBar.text!
    if searchString.isEmpty {
        filteredObjects.removeAll()
    } else {
        filteredObjects = objects.filter{ $0.name.range(of: searchString, options: .caseInsensitive) != nil } 
    }
    tableView.reloadData()
}

在表视图数据源方法中显示 objects 或 filteredObjects 取决于 searchController.isActive

In the table view data source methods display objects or filteredObjects depending on searchController.isActive

这篇关于如何在tableview中搜索数据?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！