Swift：如何为多个字符串过滤 UISearchBar？答案

【问题标题】：Swift: How to filter UISearchBar for multiple strings?Swift：如何为多个字符串过滤 UISearchBar？
【发布时间】：2025-12-11 15:35:01
【问题描述】：

我想输入一个 UISearchBar 2 个字符串。

例如。 bob man.

let itemArray: [searchItem] = [
        searchItem(title: "Bob", subtitle: "Man"),
        searchItem(title: "Bob", subtitle: "Woman"),
        searchItem(title: "Joe", subtitle: "Man")
]

var filteredArray = [searchItem]()

我怎样才能确保我得到关注 searchItem 回来：

仅searchItem(title: "Bob", subtitle: "Man")，因为仅匹配bob AND man。

当您只搜索 bob 时，您会得到 2 项返回：

searchItem(title: "Bob", subtitle: "Man"),
searchItem(title: "Bob", subtitle: "Woman")

我已有的代码：

filteredArray = itemArray.filter { obj in
    obj.title.lowercased().contains(searchBarText.lowercased()) ||
    obj.subtitle.lowercased().contains(searchBarText.lowercased())
}

【问题讨论】：

标签： swift filter filtering uisearchbar

【解决方案1】：

我确实找到了一个解决方案，确定它在性能的情况下不是最好的，但你可以从这里改进我的答案。

我在Playground进行了测试，我确实留下了一些cmets，如果您需要更多信息，请告诉我，这是一个简单的代码：

import Foundation

struct SearchItem {
    let title: String
    let subtitle: String
}

/// Trim white spaces from start and end, and map all words to lowercase
let searchedWords = "Bob man woman"
    .trimmingCharacters(in: .whitespacesAndNewlines)
    .components(separatedBy: " ")
    .map { $0.lowercased() }

let itemArray: [SearchItem] = [
    SearchItem(title: "Bob", subtitle: "Woman"),
    SearchItem(title: "Joe", subtitle: "Man"),
    SearchItem(title: "Bob", subtitle: "Man")
]

/// Lowercase all itemArray
let lowercasedItems = itemArray
    .map { SearchItem(title: $0.title.lowercased(), subtitle: $0.subtitle.lowercased()) }

/// First trying to find best result which is contains both `title` and `subtitle`
var filteredArray = lowercasedItems
    .filter { searchedWords.contains($0.title) && searchedWords.contains($0.subtitle) }

/// `filteredArray.isEmpty == false`, then we didn't find best result which contains both `title` and `subtitle`
/// `filteredArray.isEmpty == true` then we'll try to find at least one match
if filteredArray.isEmpty {
    filteredArray = lowercasedItems
        .filter { searchedWords.contains($0.title) || searchedWords.contains($0.subtitle) }
}

print(searchedWords)
print(filteredArray)

希望对您有所帮助！

【讨论】：