UISearchController for TableView

Question

这就是我的表视图的样子。每个单元格串一个来自.txt的文本

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搜索过滤器工作正常。但是当我选择其中一个结果的时候。“如何”打印"Hello“的内容。

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我认为这可能是因为"Hello“被编程为第一个字符串，所以当单击第一个单元时，它将始终是第一个单元格的结果。我需要帮助弄清楚搜索结果是如何链接到它自己的内容。如果这有意义的话？

下面是代码。当搜索文本文件时，代码从.txt文件中读取。单击时的结果不匹配。

导入UIKit

class title_ViewController: UITableViewController, UISearchResultsUpdating {
var SongTitle = [String]()
var SongLyrics = [LText]()
var filteredSongs = [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()

    if let path = NSBundle.mainBundle().pathForResource("DataBase", ofType:     "txt"){
        do {
            let stringFromFile = try String(contentsOfFile:path, encoding:     NSUTF8StringEncoding)
            var Title: [String] =     stringFromFile.componentsSeparatedByString("@")
            Title.removeAtIndex(0)
            //Seperates the Title from the Lyrics
            var t1 = Array(Title[0].componentsSeparatedByString("^"))
            t1.removeAtIndex(0)

            SongTitle = Title
            SongLyrics = [LText(LyricsText: t1)]

        }catch{
            print(error)
        }
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    if self.resultSearchController.active{
        return self.filteredSongs.count
    }else{
        return self.SongTitle.count
    }
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let Cell: AnyObject = self.tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
    Cell.textLabel?!.text = SongTitle[indexPath.row]


    if self.resultSearchController.active{
        Cell.textLabel?!.text = self.filteredSongs[indexPath.row]
    }else{
        Cell.textLabel?!.text = self.SongTitle[indexPath.row]
    }


    return Cell as! UITableViewCell

}

func updateSearchResultsForSearchController(searchController: UISearchController) {
    self.filteredSongs.removeAll(keepCapacity: false)
    let searchPredicate = NSPredicate(format: "SELF CONTAINS[c]%@", searchController.searchBar.text!)

    let array = (self.SongTitle as NSArray).filteredArrayUsingPredicate(searchPredicate)
    self.filteredSongs = array as! [String]
    self.tableView.reloadData()
}


override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    let indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow!
    let DestViewController = segue.destinationViewController as! ViewController

    DestViewController.LyricString = SongTitle[indexPath.row]
}
}

欢迎任何帮助，谢谢。

Answer 1

问题在于你的prepareForSegue。您需要修改它以测试searchController是否处于活动状态。如果是这样的话，您应该使用filteredSongs来确定要传递给目标VC的歌曲，而不是SongTitle。

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    let indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow!
    let DestViewController = segue.destinationViewController as! ViewController

    if self.resultSearchController.active {
        DestViewController.LyricString = self.filteredSongs[indexPath.row]
    }else{
        DestViewController.LyricString = self.SongTitle[indexPath.row]
    }
}

(顺便说一句，按照惯例，变量名应该以小写字母开头-- songTitle而不是SongTitle等等)

Answer 2

您可以通过从数组中搜索所选字符串的位置，在didSelectRowAtIndexPath中手动执行segue，然后可以得到正确的位置-

例子-

func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {

    let Cell: AnyObject = self.tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)

    let str: String=  Cell.textLabel.text
    // now find str in array and then get position
    int pos = getPositionOfStringInArray(str)        

    // now perform segue for pos
    //code...

}