UISearch controller IOS 8

Question

Created Jun ’15

Replies 1

Boosts 0

Participants 2

Hi, I am trying to use the new UISearchController for IOS 8 and i have been running into problems. I have it working but the problem is that i have created a custom cell which includes a title name and an image. I had created two arrays, one for the titles (var Recipes) and one for the images (var recipePhotos). It all worked ok but when the search is active it only filters the title and never changes the image and only keeps the peach and cocnut image.

Since then i have now created a new class named RecipeData so that i can assign an image and a title to each other, now the current problem is that the filtering method ive used says that it doesnt NSArray doesnt have a member named filter.

Any ideas or different methods on how i can get this filtering to work with my custom cells.

im using swift too

Any advice would be so helpful.

Thanks in advance

Alex

class RecipeListViewController : UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchResultsUpdating, UISearchControllerDelegate, UISearchBarDelegate {

@IBOutlet weak var tableView: UITableView!

var Recipes = ["Peach And Coconut Muffins","Vegan Bolognese"]

var recipePhotos = ["Peach And Coconut Muffins.jpg","Vegan Bolognese.jpg"]

var Recipe = ""

var filteredRecipes : [String]!

var searchController : UISearchController!

let kCellIdentifier: String = "recipeCell"

var searchActive : Bool = false

var tintColor : UIColor?

var placeHolder : String?

var recipe1 = RecipeData()

var recipe2 = RecipeData()

override func viewDidLoad() {

super.viewDidLoad()

self.tableView.dataSource = self

self.tableView.delegate = self

self.filteredRecipes = Recipes as! [String]

self.navigationItem.backBarButtonItem = UIBarButtonItem(title:"", style:.Plain, target:nil, action:nil)

searchController = UISearchController(searchResultsController: nil)

searchController.searchResultsUpdater = self

searchController.dimsBackgroundDuringPresentation = false

searchController.searchBar.searchBarStyle = .Minimal

searchController.searchBar.sizeToFit()

searchController.searchBar.tintColor = UIColor.whiteColor()

searchController.searchBar.placeholder = "Search For Recipes"

tableView.tableHeaderView = searchController.searchBar

definesPresentationContext = true

var textFieldInsideSearchBar = searchController.searchBar.valueForKey("searchField") as! UITextField

textFieldInsideSearchBar.textColor = UIColor.whiteColor()

recipe1.name = "Peach And Coconut Muffins"

recipe1.imageName = "Peach And Coconut Muffins.jpg"

recipe2.name = "Vegan Bolognese"

recipe2.imageName = "Vegan Bolognese.jpg"

self.Recipes = [recipe1, recipe2]

func updateSearchResultsForSearchController(searchController: UISearchController) {

let searchText = [searchController.searchBar.text , searchController.searchBar. ]

filteredRecipes = searchText.isEmpty ? Recipes : Recipes.filter NSArray does not have a member named filter!

({(dataString: String) -> Bool in

return dataString.rangeOfString(searchText, options: .CaseInsensitiveSearch) != nil

})

tableView.reloadData()

}

Boost

Answer 1

DressTheMonkey OP

Jun ’15

Hello, I did some experimenting in a playground, and found the only way I could filter an NSArray was by casting. Here's the experiment I did (unfortunately the results don't seem to copy/paste across); both of the filters return the expected results. Notice I'm casting b to a Swift array ([Int]) to make the filter work. I've only put a.dynamicType and b.dynamicType to prove they are what they should be.

let a: [Int] = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
a.dynamicType


let b: NSArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
b.dynamicType


let fa = a.filter { $0 % 2 == 1 }
print(fa, appendNewline: false)


let fb = (b as! [Int]).filter { $0 % 2 == 1 }
print(fb, appendNewline: false)

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