Question

我已经成功构建了一个搜索功能，可以在detailviewcontroller中搜索并显示TableView标题和副标题。在detailviewcontroller中有两个文本标签，一个用于标题，另一个用于字幕。

在单元格中显示标题和副标题可以正常工作，包括在detailviewcontroller中点击和查看它们。但是当在搜索功能中输入时，应用程序崩溃的原因是：

致命错误：数组索引超出范围   （lldb）

EXC_BAD_INSTRUCTION（代码= EXC_I386_INVOP，子代码= 0x0）

这是我的所有代码：

 let quotes = [
   "Saying1",
   "Saying2",]//End

let persons = [
    "Name1",
    "Name2",

]//End 

var filteredQuotes = [String]()
var filteredPersons = [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 numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1    }

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows

    if self.resultSearchController.active
    {
        return self.filteredQuotes.count
    }
    else
    {
        return self.quotes.count
         }

}

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

    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as UITableViewCell?

    if self.resultSearchController.active
    {
        cell!.textLabel?.text = self.filteredQuotes[indexPath.row]
        cell!.detailTextLabel?.text = self.filteredPersons[indexPath.row] //THE ERROR OCCURS HERE
    }
    else
    {
        cell!.textLabel?.text = self.quotes[indexPath.row]
        cell!.detailTextLabel?.text = self.persons[indexPath.row]
    }

    return cell!
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "SendDataSegue" {
        if let destination = segue.destinationViewController as? SearchDetailViewController {

            let path = tableView.indexPathForSelectedRow
            let cell = tableView.cellForRowAtIndexPath(path!)
            destination.viaSegue = (cell?.textLabel?.text!)!
            destination.viaSeguePerson =(cell?.detailTextLabel?.text!)!
        }
    }
}

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    _ = tableView.indexPathForSelectedRow!
    if let _ = tableView.cellForRowAtIndexPath(indexPath) {
        self.performSegueWithIdentifier("SendDataSegue", sender: self)
    }

}


func updateSearchResultsForSearchController(searchController: UISearchController) {

    self.filteredQuotes.removeAll(keepCapacity: false)
    self.filteredPersons.removeAll(keepCapacity: false)

    let searchPredicate = NSPredicate(format: "SELF CONTAINS [c] %@", searchController.searchBar.text!)

    let Quotesarray = (self.quotes as NSArray).filteredArrayUsingPredicate(searchPredicate)

    self.filteredQuotes = Quotesarray as! [String]

    let Personsarray = (self.persons as NSArray).filteredArrayUsingPredicate(searchPredicate)

    self.filteredPersons = Personsarray as! [String]

    self.tableView.reloadData()
}

Answer 1

正如@Larme和@Fogmeister所建议的那样，你可以通过一个结构化数组来改进这个 - 这里有一个如何做这个部分的例子。

定义一个结构来保存你的数据

struct Quotes
{
    var person : String
    var quote  : String
}

和它的初始化

let quotes = [Quotes(person: "name 1", quote: "saying 1"),
               Quotes(person: "name 2", quote: "saying 2")  ]

或者，当然，你可以初始化一个空数组，然后在从某个地方检索它时附加数据 - 数据库或用户输入

var quotes : [Quotes] = []

let quote1 = Quotes(person: "name 3", quote: "saying 3")        
quotes.append(quote1)

或

quotes.append(Quotes(person: "name 4", quote: "saying 4"))

数组索引超出范围

1 个答案: