swift - Swift SearchBar 无法过滤数据
问题描述
我已经设置了 UISearchBar 的东西。但我收到错误说。
无法将类型“[cellData]”的值分配给类型“[String]”
这是代码
struct cellData {
let jobTitle : AnyObject?
let companyName : String?
let jobLocation : String?
let jobDescription : String?
let jobReq : String?
let firstPosterImage : AnyObject?
let secondPosterImage : AnyObject?
let createdAt : Date
init(jobTitle: AnyObject?, companyName: String? = nil, jobLocation: String? = nil ,jobDescription: String? = nil, jobReq:String? = nil, firstPosterImage: AnyObject? = nil, secondPosterImage: AnyObject? = nil, timeStamp:Double) {
self.jobTitle = jobTitle
self.companyName = companyName
self.jobLocation = jobLocation
self.jobDescription = jobDescription
self.jobReq = jobReq
self.firstPosterImage = firstPosterImage
self.secondPosterImage = secondPosterImage
self.createdAt = Date(timeIntervalSince1970: timeStamp/1000)
}
}
var cellDataArray = [cellData]()
var filtered = [String]()
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText.isEmpty {
isSearching = false
tableView.reloadData()
} else {
isSearching = true
filtered = cellDataArray.filter({($0.jobTitle?.lowercased?.contains(searchText.lowercased()))!})
tableView.reloadData()
}
}
我在这一行遇到错误
filtered = cellDataArray.filter({($0.jobTitle?.lowercased?.contains(searchText.lowercased()))!})
. 请注意,CellDataArray 具有 cellData 的结构。我在 tableView 中使用 searchBar。
谢谢。
解决方案
你的问题是cellDataArray
andfiltered
有两种不同的数据类型(String
和 struct CellData
),所以你不能简单地将一个分配给另一个而不像这样的转换
let res = cellDataArray.filter({($0.jobTitle?.lowercased?.contains(searchText.lowercased()))!})
filtered = res.map { $0.anyProprtyInside } // property should be a String
您可能的意思是声明过滤为
var filtered = [CellData]() // start structs / classes / protocols with uppercase letter