在数组swift中搜索对象 [英] Searching through objects in array swift

问题描述

我正在尝试使用UISearchController创建搜索功能。但是，我似乎无法使其与我的团队对象一起工作。我首先创建了一个包含id，name和shortname的Team Object。然后我从一个url中检索teamData，并将Team Objects添加到一个填充到tableView中的数组中。这个tableView包含一个searchController，它假设过滤数据，但没有任何反应。

I'm trying to create a search function using the UISearchController. However i cant seem to make it work with my Team Object. I've started by creating a Team Object which contain a id, name and shortname. Then i'm retrieving the teamData from a url and adding the Team Objects into an array which is populated into a tableView. This tableView contain a searchController which is suppose to filter the Data, but nothing happens.

数组

var teamArray = Array<Team>()
var filteredTableData = [String]()

GetTeams功能

GetTeams function

func getTeams(url: String) {

    isApiCalling = true
    request(.GET, url, parameters: nil)
        .response { (request, response, data, error) in
            if error == nil {

                let data: AnyObject = data!
                let jsonArray = JSON(data: data as! NSData)
                for (key: String, subJson: JSON) in jsonArray {



                        // Create an object and parse your JSON one by one to append it to your array
                        var newTeamObject = Team(id: subJson["id"].intValue, name: subJson["name"].stringValue, shortname: subJson["shortname"].stringValue)


                        self.teamArray.append(newTeamObject)


                }


                self.isApiCalling = false
                self.tableView.reloadData()
                self.refreshControl?.endRefreshing()

            }
    }

}

CellForRowAtIndexPath

CellForRowAtIndexPath

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("teamCell", forIndexPath: indexPath) as! TeamCell


    cell.textLabel?.font = UIFont(name: "HelveticaNeue-Light", size: 20)
    cell.textLabel?.text = self.teamArray[indexPath.row].name as String



    if (self.cellSelected.containsObject(indexPath)) {
        cell.accessoryView = cell.accessoryCheck
    } else {
        cell.accessoryView = cell.accessoryUncheck
    }


    return cell
}

FilterData

FilterData

func updateSearchResultsForSearchController(searchController: UISearchController)
{
    filteredTableData.removeAll(keepCapacity: false)

    let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text)
    let array = (teamArray as NSArray).filteredArrayUsingPredicate(searchPredicate)
    filteredTableData = array as! [String]

    self.tableView.reloadData()
}

团队对象

class Team{
  var id: Int!
  var name: NSString!
  var shortname: NSString!


init(id: Int, name:NSString, shortname: NSString) {
    self.id = id
    self.name = name
    self.shortname = shortname

}

}

推荐答案

teamArray中的对象没有SELF属性。您不能使用SELF一次搜索对象的所有属性。您必须提供属性的名称，如果要搜索多个属性，则必须将所有这些属性添加到谓词中。

The objects in the teamArray don't have a SELF property. You can't use SELF to search in all the properties of the object at once. You have to give the name of the property, and if you want to search in more than one you have to add all those properties to the predicate.

我认为这是足以让你在名称属性中搜索如下：

I would think it's enough for you to search in the name property like so:

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

如果你需要更多属性，你会喜欢这样：

If you need in more properties you do like this:

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

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