Question

我遇到了searchDisplayController和自定义原型单元的问题。我的故事板有一个表格视图，其中包含一个定制的原型单元格，其中包括＆＃34; Tulona＆＃34;标识符。故事板还有一个搜索显示控制器。当搜索栏聚焦时，我想将一些搜索选项显示为基本单元格，在选择一个选项后，我想用该自定义单元格重新加载表格。我应用如下代码。除了选择一个选项没有完美刷新/重新加载后的表视图，一切都很完美。当我从显示控制器的表格视图中选择一个选项时，主表格视图（带有＆＃34; Tulona＆＃34;单元格的故事板表格）不会出现。如果我从搜索栏单击取消按钮，主表视图确实显示自定义单元格。请告诉我为什么在从显示控制器表视图中选择选项后主表没有重新加载？我是iOS开发的新手。如果这是非常明显或容易的事情我很抱歉，我只是错过了它。如果是的话，请指出正确的方向..谢谢。

class SecondViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate, UISearchDisplayDelegate {
    var brandCollection : [BrandListItem]?
    var aliaseCollection : [BrandAliaseItem]?
    var brandsToCompare = [Brand]()
    var currentSearchDataArray = [String]()

    @IBOutlet weak var searchBar: UISearchBar!
    @IBOutlet weak var tableView: UITableView!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.tableView.separatorStyle = UITableViewCellSeparatorStyle.None

        //var nib = UINib(nibName: "SearchTableViewCell", bundle: nil)
        //self.searchDisplayController!.searchResultsTableView.registerNib(nib, forCellReuseIdentifier: "SearchOptions")

        let dataManager = DataManager.sharedInstance
        self.brandCollection = dataManager.brandCollection
        self.aliaseCollection = dataManager.aliaseCollection     
    }

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

    func searchDisplayController(controller: UISearchDisplayController, shouldReloadTableForSearchString searchString: String!) -> Bool{
        println(searchString)

        if !searchString.isEmpty{
            //Clearing current search data array for new search key filtering
            self.currentSearchDataArray.removeAll(keepCapacity: false)

            //Add all brand matching to new search key from brand collection to the current search data array
            for brand in self.brandCollection! {
                if brand.name.lowercaseString.rangeOfString(searchString.lowercaseString) != nil {
                    self.currentSearchDataArray.append(brand.name)
                }
            }

            //Add a brand matching to new search key from aliase collection to the current search data array by avoiding duplication
            for aliase in self.aliaseCollection! {
                if aliase.aliaseName.lowercaseString.rangeOfString(searchString.lowercaseString) != nil {
                    var brandName = self.isBrandExist(aliase.brandId)
                    if !brandName.isEmpty{
                        if !contains(self.currentSearchDataArray, brandName){
                            self.currentSearchDataArray.append(brandName)
                        }
                    }
                }
            }
        }

        return true
    }


    //Return brand name if brand id and aliase id is same, otherwise empty
    func isBrandExist(id:Int)->String{
        for brand in self.brandCollection! {
            if id == brand.id {
                return brand.name
            }
        }
        return ""
    }


    func searchBarCancelButtonClicked(searchBar: UISearchBar) {
        searchBar.resignFirstResponder()
    }

    func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 1
    }

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if tableView == self.searchDisplayController!.searchResultsTableView {
            return self.currentSearchDataArray.count
        } else {
            return self.brandsToCompare.count
        }
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        //let cell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier("SearchOptions") as UITableViewCell
        let cell = UITableViewCell()
        // Check to see whether the normal table or search results table is being displayed and set the Brand object from the appropriate array
        if tableView == self.searchDisplayController!.searchResultsTableView {
            let brandName = self.currentSearchDataArray[indexPath.row] as NSString
            cell.textLabel?.text = brandName
            //cell.tag = brand.id
        } else {
            let cell: TulonaCell = self.tableView.dequeueReusableCellWithIdentifier("Tulona", forIndexPath: indexPath) as TulonaCell
            var brand = self.brandsToCompare[indexPath.row] as Brand
            cell.setCustomCellForTulona(brand.name, rating: brand.rating, NoOfComment: brand.no_of_comments)
        }

        return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        if tableView == self.searchDisplayController!.searchResultsTableView {
            self.brandsToCompare.append(Brand(id: 100, rating: 5, no_of_comments: "110", name: "Wolf", aliases: []))
            self.tableView.reloadData()
            self.searchDisplayController!.searchBar.resignFirstResponder()
        }else{
            println("Table view should not reload")
        }
    }   
}

Answer 1

我已经通过将这些行添加到didSelectRowAtIndexPath函数 -

来解决了我的问题

dispatch_async(dispatch_get_main_queue()){
                self.tableView.reloadData()
                self.searchDisplayController!.setActive(false, animated: true)
                println("Table view should reload")
            }

行选择后不会重新加载表视图

1 个答案: