在搜索栏iOS swift3中加载带有条目的单元格时，图像无法正确显示
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【中文标题】在搜索栏iOS swift3中加载带有条目的单元格时，图像无法正确显示【英文标题】：image is not displayed correctly while loading cell with entries in searchbar iOS swift3 【发布时间】：2017-06-28 05:02:36 【问题描述】：在这里，我试图在搜索开始时显示过滤后的数据结果。名称的搜索有效，但我不明白如何通过搜索显示图像。我认为错误在于过滤器内容我是 ios 新手，如有任何帮助，将不胜感激
import UIKit
import Foundation
import SDWebImage
class TableViewController: UITableViewController,UISearchBarDelegate,UISearchResultsUpdating
//var sections = ["recent","old"]
var TableData:Array<String> = Array <String>()
//var TableDataRecent:Array<String> = Array <String>()
var TableImage:Array<String> = Array <String>()
var appoid:Array<String> = Array <String>()
var filteredArray:[String]=[]
var filteredImage:[String]=[]
let searchController = UISearchController(searchResultsController:nil)
override func viewDidLoad()
super.viewDidLoad()
getData()
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cells")
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation=false
definesPresentationContext=true
self.tableView.tableHeaderView = searchController.searchBar
// Do any additional setup after loading the view, typically from a nib.
tableView.reloadData()
override func didReceiveMemoryWarning()
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
//
// override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?
//
// return sections[section]
//
//
//
// override func numberOfSections(in tableView: UITableView) -> Int
// // #warning Incomplete implementation, return the number of sections
//
// return sections.count
//
//
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
if searchController.isActive && !searchController.searchBar.isEqual("")
return self.filteredArray.count
else
return TableData.count
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
//here cells is the identifier name of prototype cell
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cells", for: indexPath)
if searchController.isActive && !searchController.searchBar.isEqual("")
cell.textLabel?.text = filteredArray[indexPath.row]
//cell.imageView?.image = filteredImage[indexPath.row]
// print("filteredimage")
// print(filteredImage)
// print(indexPath.row)
cell.imageView?.sd_setImage(with: URL(string: TableImage[indexPath.row]), placeholderImage: UIImage(named: "PA"))
print(TableData[indexPath.row])
print(appoid[indexPath.row])
else
cell.textLabel?.text = self.TableData[indexPath.row]
//cell.imageView?.image = self.TableImage[indexPath.row]
cell.imageView?.sd_setImage(with: URL(string: TableImage[indexPath.row]), placeholderImage: UIImage(named: "PA"))
//cell.= appoid[indexPath.row]
return cell
func filterContentForSearch(searchString:String)
self.filteredArray=self.TableData.filter()nil != $0.range(of:searchString)
self.filteredImage=self.TableImage.filter()nil != $0.range(of:searchString)
self.tableView.reloadData()
func updateSearchResults(for searchController: UISearchController)
self.filterContentForSearch(searchString: searchController.searchBar.text!)
func getData()
var request = URLRequest(url: URL(string: "*********")!)
//request.httpMethod = "POST"
//let postString = "date="+x
//request.httpBody = postString.data(using: .utf8)
//print(request.httpBody)
let task = URLSession.shared.dataTask(with: request) data, response, error in
guard let data = data, error == nil else // check for fundamental networking error
print("error=\(error)")
return
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(response)")
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(responseString)")
do
let json = try JSONSerialization.jsonObject(with: data, options:.allowFragments) as! [String:AnyObject]
if let stations = json["result"] as? [[String: AnyObject]]
for station in stations
let name = station["patient_name"] as! String
//self.login = login_value
let profile_pic = station["image"] as! String
let status = station["status"] as! String
let appo_id = station["id"] as! String
// let appo_id = station["appointment_id"] as! String
//let status = station["status"] as! String
//let appo_time = station["appointment_time"] as! String
//let appo_duration = station["time_duration"] as! String
//let reason = station["reason"] as! String
print(name,status)
self.TableData.append(name)
self.TableImage.append(profile_pic)
self.appoid.append(appo_id)
print(self.TableData)
print(self.TableImage)
//print(self.items)
//self.do_table_refresh();
self.tableView.reloadData()
catch
print("Error with Json: \(error)")
task.resume()
【问题讨论】：
你在filteredImage中有url吗？ 【参考方案1】：不要为图像、数据和应用程序保留单独的数组。创建 struct 对象并在 struct 对象上进行搜索。 试试这个，
import UIKit
import Foundation
import SDWebImage
struct TableObject
var name: String = ""
var image: String = ""
var appoId: String = ""
class TableViewController: UITableViewController,UISearchBarDelegate,UISearchResultsUpdating
//var sections = ["recent","old"]
var tableDataSource: [TableObject] = []
var filteredArray: [TableObject] = []
let searchController = UISearchController(searchResultsController:nil)
override func viewDidLoad()
super.viewDidLoad()
getData()
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cells")
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation=false
definesPresentationContext=true
self.tableView.tableHeaderView = searchController.searchBar
// Do any additional setup after loading the view, typically from a nib.
tableView.reloadData()
override func didReceiveMemoryWarning()
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
//
// override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?
//
// return sections[section]
//
//
//
// override func numberOfSections(in tableView: UITableView) -> Int
// // #warning Incomplete implementation, return the number of sections
//
// return sections.count
//
//
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
if searchController.isActive && !searchController.searchBar.isEqual("")
return self.filteredArray.count
else
return tableDataSource.count
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
//here cells is the identifier name of prototype cell
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cells", for: indexPath)
if searchController.isActive && !searchController.searchBar.isEqual("")
cell.textLabel?.text = filteredArray[indexPath.row].name
//cell.imageView?.image = filteredImage[indexPath.row]
// print("filteredimage")
// print(filteredImage)
// print(indexPath.row)
cell.imageView?.sd_setImage(with: URL(string: filteredArray[indexPath.row].image), placeholderImage: UIImage(named: "PA"))
else
cell.textLabel?.text = self.TableData[indexPath.row]
//cell.imageView?.image = self.TableImage[indexPath.row]
cell.imageView?.sd_setImage(with: URL(string: tableDataSource[indexPath.row].image), placeholderImage: UIImage(named: "PA"))
//cell.= appoid[indexPath.row]
return cell
func filterContentForSearch(searchString:String)
self.filteredArray=self.tableDataSource.filter()nil != $0.name.range(of:searchString)
self.tableView.reloadData()
func updateSearchResults(for searchController: UISearchController)
self.filterContentForSearch(searchString: searchController.searchBar.text!)
func getData()
var request = URLRequest(url: URL(string: "*********")!)
//request.httpMethod = "POST"
//let postString = "date="+x
//request.httpBody = postString.data(using: .utf8)
//print(request.httpBody)
let task = URLSession.shared.dataTask(with: request) data, response, error in
guard let data = data, error == nil else // check for fundamental networking error
print("error=\(error)")
return
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(response)")
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(responseString)")
do
let json = try JSONSerialization.jsonObject(with: data, options:.allowFragments) as! [String:AnyObject]
if let stations = json["result"] as? [[String: AnyObject]]
for station in stations
let name = station["patient_name"] as! String
//self.login = login_value
let profile_pic = station["image"] as! String
let status = station["status"] as! String
let appo_id = station["id"] as! String
// let appo_id = station["appointment_id"] as! String
//let status = station["status"] as! String
//let appo_time = station["appointment_time"] as! String
//let appo_duration = station["time_duration"] as! String
//let reason = station["reason"] as! String
print(name,status)
let tableData = TableObject(name: name, image: profile_pic, appoId: appo_id)
self.tableDataSource.append(tableData)
//print(self.items)
//self.do_table_refresh();
self.tableView.reloadData()
catch
print("Error with Json: \(error)")
task.resume()
【讨论】：
【参考方案2】：关注这些
不要做单独的数组：
let arrData = [Any]() // these combined array
获取数据时更改
if let stations = json["result"] as? [[String: AnyObject]]
for station in stations
arrData.append(station)
TableViewDatasource 的变化
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
if searchController.isActive && !searchController.searchBar.isEqual("")
return self.filteredArray.count
else
return arrData.count
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
//here cells is the identifier name of prototype cell
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cells", for: indexPath)
if searchController.isActive && !searchController.searchBar.isEqual("")
let dictObjects = filteredArray[indexPath.row] as [String: AnyObject]
cell.textLabel?.text = dictObjects["name"]
cell.imageView?.sd_setImage(with: URL(string: dictObjects["image"]), placeholderImage: UIImage(named: "PA"))
else
let dictObjects = arrData[indexPath.row] as [String: AnyObject]
cell.textLabel?.text = dictObjects["name"]
cell.imageView?.sd_setImage(with: URL(string: dictObjects["image"]), placeholderImage: UIImage(named: "PA"))
//cell.= appoid[indexPath.row]
return cell
使用此过滤器
let namePredicate = NSPredicate(format: "name like %@","yourstring");
filteredArray = arrData.filter namePredicate.evaluate(with: $0) ;
print("names = ,\(filteredArray)");
【讨论】：
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