Swift：在 tableView 中过滤 SwiftyJSON 数据
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【中文标题】Swift：在 tableView 中过滤 SwiftyJSON 数据【英文标题】：Swift: Filter SwiftyJSON data in tableView 【发布时间】：2016-07-29 04:19:09 【问题描述】：我有 JSON 格式的数据。我正在使用 SwiftyJSON。我的数据是这样的：
[
"kode_customer": 1,
"nama_customer": "Logam Jaya, UD",
"alamat_customer": "Rajawali No 95",
"kodepos": 60176,
"kode_provinsi": 11,
"gps_lat": -7.233834999999999,
"gps_long": 112.72964666666667
,
"kode_customer": 2,
"nama_customer": "Terang, TK",
"alamat_customer": "Raya Dukuh Kupang 100",
"kodepos": 60225,
"kode_provinsi": 11,
"gps_lat": -7.285430000000001,
"gps_long": 112.71538333333335
,
"kode_customer": 3,
"nama_customer": "Sinar Family",
"alamat_customer": "By Pass Jomin No 295",
"kodepos": 41374,
"kode_provinsi": 9,
"gps_lat": -6.4220273,
"gps_long": 107.4748978
,
"kode_customer": 4,
"nama_customer": "Lancar Laksana, TB",
"alamat_customer": "Jendral Sudirman No 69",
"kodepos": 41374,
"kode_provinsi": 9,
"gps_lat": -6.4220273,
"gps_long": 107.4748978
]
如何在tableView 上显示它并使用UISearchController 过滤它。这是我的代码：
class LocationSearchTable: UITableViewController
var custData: JSON = []
var filteredData: [String]!
func getCustData()
let path = NSBundle.mainBundle().pathForResource("cust_toko", ofType: "json")
let jsonData = NSData(contentsOfFile: path!)
let json = JSON(data: jsonData!)
self.custData = son
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
return filteredData.count
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCellWithIdentifier("cell")!
cell.textLabel?.text = filteredData[indexPath.row]
return cell
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
print(filteredData[indexPath.row])
extension LocationSearchTable: UISearchResultsUpdating
func updateSearchResultsForSearchController(searchController: UISearchController)
if let searchText = searchController.searchBar.text
let searchPredicate = NSPredicate(format: "name contains[cd] %@", searchText)
filteredData = JSON(custData.filter JSON.Value() )
tableView.reloadData()
出现这样的错误：'Value' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
这里是这个问题的 github 链接https://github.com/lamfete/MapSearchDemo
【问题讨论】：
【参考方案1】：首先您需要使用arrayObject 从JSON 对象中获取数组，然后您需要将谓词键name 更改为customer_name，因为您的json 响应中没有key 名称，因此请更改您的代码像这样只从该结果中获取 customer_name。
extension LocationSearchTable: UISearchResultsUpdating
func updateSearchResultsForSearchController(searchController: UISearchController)
if let searchText = searchController.searchBar.text
let searchPredicate = NSPredicate(format: "nama_customer contains[cd] %@", searchText)
if let array = custData.arrayObject as? [[String:AnyObject]]
let filterArr = array.filter searchPredicate.evaluateWithObject($0)
filteredData = filterArr.map( String($0["nama_customer"]))
tableView.reloadData()
【讨论】：
嗨，它有 2 个错误。第一个错误是'Value' (aka 'AnyObject') cannot be constructed because it has no accessible initializers on let filterArr = JSON(custData.filter JSON.Value() )，第二个错误是Use of unresolved identifier 'filterData' on filterData = filterArr.map $0["nama_customer"]
错误Cannot convert value of type 'Element' (aka '(String, JSON)') to expected argument type 'AnyObject?' 发生在let filterArr = JSON(custData.filter searchPredicate.evaluateWithObject($0) ) 指向$0
仍然错误，先生 Type 'Element' (aka '(String, JSON)') has no subscript members on 'filteredData = filterArr.map $0["nama_customer"] ' 我在 ["nama_customer"] 之后添加了 .stringValue 但仍然有错误。
编译时间，先生。错误是Type 'Element' (aka '(String, JSON)') has no subscript members
检查我的编辑，我已更改if let array = custData.arrayObject as? [[String:AnyObject]] 【参考方案2】：
我想回答我自己的问题。
import Foundation
import UIKit
import SwiftyJSON
import MapKit
class LocationSearchTable: UITableViewController
var custData: JSON = []
var dbTokos : [Toko] = []
var filteredDataToko: [Toko]!
var handleMapSearchDelegate: HandleMapSearch? = nil
var vc = ViewController()
func getCustData()
let path = NSBundle.mainBundle().pathForResource("cust_toko", ofType: "json")
let jsonData = NSData(contentsOfFile: path!)
let json = JSON(data: jsonData!)
self.custData = Jon
splitData()
func splitData()
for(_, subJson):(String, JSON) in self.custData
if let name: String = subJson["nama_customer"].stringValue
if let address: String = subJson["alamat_customer"].stringValue
if let city: String = subJson["kota"].stringValue
if let province: String = subJson["provinsi"].stringValue
if let lat: Double = subJson["gps_lat"].doubleValue
if let long: Double = subJson["gps_long"].doubleValue
let toko = Toko(title: name,
locationName: address,
cityName: city,
provinsiName: province,
coordinate: CLLocationCoordinate2D(latitude: lat, longitude: long))
dbTokos.append(toko)
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
return filteredDataToko.count
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCellWithIdentifier("cell")!
cell.textLabel!.text = String(filteredDataToko[indexPath.row].title!)
cell.detailTextLabel!.text = String(filteredDataToko[indexPath.row].locationName) + ", " + String(filteredDataToko[indexPath.row].cityName) + ", " + String(filteredDataToko[indexPath.row].provinsiName)
return cell
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
let toko = Toko(title: filteredDataToko[indexPath.row].title!,
locationName: filteredDataToko[indexPath.row].locationName,
cityName: filteredDataToko[indexPath.row].cityName,
provinsiName: filteredDataToko[indexPath.row].provinsiName,
coordinate: filteredDataToko[indexPath.row].coordinate)
handleMapSearchDelegate?.dropPinZoomIn(toko)
dismissViewControllerAnimated(true, completion: nil)
extension LocationSearchTable: UISearchResultsUpdating
func updateSearchResultsForSearchController(searchController: UISearchController)
if let searchText = searchController.searchBar.text
filteredDataToko = searchText.isEmpty ? dbTokos : dbTokos.filter(
(dataString: Toko) -> Bool in
return dataString.title?.rangeOfString(searchText, options: .CaseInsensitiveSearch) != nil
)
tableView.reloadData()
【讨论】：
为什么要从一个字符串中初始化一个字符串（title、locationName等好像反正是字符串）？
所以它不是可选的以上是关于Swift：在 tableView 中过滤 SwiftyJSON 数据的主要内容，如果未能解决你的问题，请参考以下文章