swift - 如何搜索 [[String]] 类型的字符串或字符

Question

//Am not getting any search list of cells
//when am searching am getting empty array every time.

var actors = [["a0","b0","c0","d0"],["a1","b1","c1","d1"],["a2","b2","c2","d2"],["a3","b3","c3","d3"]]

var filterArr:[[String]] = []

func updateSearchResults(for searchController: UISearchController) {        
    print("Searching for text:----\(searchController.searchBar.text!)")

    let predicate = NSPredicate(format: "SELF Contains[c] %@" , searchController.searchBar.text!)

    filterArr = (actors as NSArray).filtered(using: predicate) as! [[String]]
    print(filterArr)

}

Answer 1

不要使用 Objective-C 的东西NSPredicate，比如NSArray当你不需要的时候。使用 Swiftfilter和map.

根据您在评论中的描述，您只想保留包含搜索文本的内部数组。你可以这样做：

filterArr = actors.filter { $0.contains(searchController.searchBar.text!) }

如果您只想保留包含搜索文本的项目的内部数组，请执行以下操作：

filterArr = actors.filter { $0.contains { $0.contains(searchController.searchBar.text!) } }