Question

我创建了一个包含标签和图像的单元格的TableView。当我不使用搜索栏时，一切正常，但是当我使用搜索栏图片时，1.png总是首先显示。这是使用搜索栏将图片连接到标签的方法吗？谢谢你的帮助

import UIKit

class TableViewController: UITableViewController, UISearchResultsUpdating {

var TitleList = ["101", "121", "122", "131", "132"]
let ImageList = ["1.png", "2.png", "3.png", "4.png", "5.png"]



var filteredfarger = [String]()
var resultSearchController = UISearchController()


override func viewDidLoad() {
    super.viewDidLoad()

    self.resultSearchController = UISearchController(searchResultsController: nil)
    self.resultSearchController.searchResultsUpdater = self
    self.resultSearchController.dimsBackgroundDuringPresentation = false
    self.resultSearchController.searchBar.sizeToFit()
    self.tableView.tableHeaderView = self.resultSearchController.searchBar
    self.tableView.reloadData()


override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if self.resultSearchController.active {
        return self.filteredfarger.count
    }
    else {

        return self.TitleList.count
    }
}


override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell: TableViewCell = tableView.dequeueReusableCellWithIdentifier("Cell") as! TableViewCell
    cell.LabelTitle.text = TitleList[indexPath.row]
    cell.CellDescription.text = DescriptionList[indexPath.row]


    let imagename = UIImage(named: ImageList[indexPath.row])
    cell.CellImage.image = imagename



    if self.resultSearchController.active {
        cell.LabelTitle?.text = self.filteredfarger[indexPath.row]
    }
    else {
        cell.LabelTitle?.text = self.TitleList[indexPath.row]
    }

    return cell


}

func updateSearchResultsForSearchController(searchController: UISearchController) {

    self.filteredfarger.removeAll(keepCapacity: false)
    let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text!)
    let array = (self.TitleList as NSArray).filteredArrayUsingPredicate(searchPredicate)
    self.filteredfarger = array as! [String]
    self.tableView.reloadData()


override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if (segue.identifier == "DetailView") {
        let VC = segue.destinationViewController as! DetailedViewController
        if let cell = sender as? TableViewCell {
            VC.SentData1 = cell.LabelTitle.text
        }
    }
}

Answer 1

搜索时，过滤后的数组将只有匹配的标题。最有可能只有一个匹配，所以filteredfarger.count为1.

在搜索时调用cellForRowAtIndexPath时，将根据UIImage(named: ImageList[indexPath.row])生成图像。由于filteredfarger.count为1，因此只会创建1行，同样indexPath.row将为0.这将导致始终从ImageList数组中引用图像1.png。

Answer 2

以下是使用字典的代码示例。我还没有使用Xcode检查或编译过这个，但是你可以看到一般的想法。

import UIKit

class TableViewController: UITableViewController, UISearchResultsUpdating {

// This is an array of dictionaries
let images = [["title" : "101", "image" : UIImage(named: "1.png")], 
    ["title" : "121", "image" : UIImage(named: "2.png")],
    ["title" : "122", "image" : UIImage(named: "3.png")], 
    ["title" : "131", "image" : UIImage(named: "4.png")], 
    ["title" : "132", "image" : UIImage(named: "5.png")]]

var filteredImages = [Dictionary]()
var resultSearchController = UISearchController()

override func viewDidLoad() {
    super.viewDidLoad()

    self.resultSearchController = UISearchController(searchResultsController: nil)
    self.resultSearchController.searchResultsUpdater = self
    self.resultSearchController.dimsBackgroundDuringPresentation = false
    self.resultSearchController.searchBar.sizeToFit()
    self.tableView.tableHeaderView = self.resultSearchController.searchBar
    self.tableView.reloadData()


override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if self.resultSearchController.active {
        return filteredImages.count
    }
    else {
        return images.count
    }
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell: TableViewCell = tableView.dequeueReusableCellWithIdentifier("Cell") as! TableViewCell

    if self.resultSearchController.active {
        let image = filteredImages[indexPath.row]
        cell.LabelTitle?.text = image["title"]
        cell.CellImage.image = image["image"]
    }
    else {
        let image = images[indexPath.row]
        cell.LabelTitle?.text = image["title"]
        cell.CellImage.image = image["image"]
    }
    return cell
}

func updateSearchResultsForSearchController(searchController: UISearchController) {
    filteredImages.removeAll(keepCapacity: false)
    for imageDictionary in images {
         if imageDictionary["title"] == searchController.searchBar.text! {
             filteredImages += imageDictionary
         }
    }
    self.tableView.reloadData()
}


override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if (segue.identifier == "DetailView") {
        let VC = segue.destinationViewController as! DetailedViewController
        if let cell = sender as? TableViewCell {
            VC.SentData1 = cell.LabelTitle.text
        }
    }
}

Answer 3

这将起作用

cell.TitleLabel.text = titleList [indexPath.row] cell.DescriptionLabel.text = DescriptionList [indexPath.row]

    let imagename =  UIImage(named: ImageList[indexPath.row])
    cell.imageView?.image = imagename
    return cell

使用搜索栏时，tableview中的图片会发生变化

3 个答案: