如何使用搜索欄使用swift從json結果獲取數據？

Question

要求：我需要在UITableView與UISearchBar過濾JSON數據，所以我放置UISearchBar（未UISearchBarController）到我的視圖控制器的頂部，並且我放置UITableView下方的UISearchBar和我也有包含在json數據API密鑰格式。

代碼在我的視圖控制器：

class FourthViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UITabBarControllerDelegate,UISearchDisplayDelegate{ 
    var arrDict = NSMutableArray() 
    var FilteredData = NSMutableArray() 
    var userid:String! 
    @IBOutlet var SearchButton: UISearchBar! 
    @IBOutlet var SlideShow: ImageSlideshow! 
    @IBOutlet var MyTableView: UITableView! 
    @IBOutlet var PostButton: UIButton! 

    override func viewDidLoad() { 
    super.viewDidLoad() 
    self.navigationController?.navigationBar.hidden = true 
    SearchButton.delegate = self 

    jsonParsingFromURL() 
     SlideShow.backgroundColor = UIColor.whiteColor() 
     SlideShow.slideshowInterval = 5.0 
     SlideShow.pageControlPosition = PageControlPosition.UnderScrollView 
     SlideShow.pageControl.currentPageIndicatorTintColor = UIColor.lightGrayColor() 
     SlideShow.pageControl.pageIndicatorTintColor = UIColor.blackColor() 
     SlideShow.contentScaleMode = UIViewContentMode.ScaleAspectFill 
     SlideShow.setImageInputs(alamofireSource) 
      } 
func jsonParsingFromURL() { 
    if Reachability.isConnectedToNetwork() == true 
    { 
    Alamofire.request(.GET, "http://something.com", parameters: nil, encoding: .URL, headers: nil).response { (req, res, data, error) -> Void in 
     let dataString = NSString(data: data!, encoding:NSUTF8StringEncoding) 
     print(dataString) 
     self.startParsing(data!) 
    } 
    } 
    else{ 
     let alert = UIAlertController(title: "No Internet Connection", message: "make sure your device is connected to the internet", preferredStyle: UIAlertControllerStyle.Alert) 
     alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil)) 
     self.presentViewController(alert, animated: true, completion: nil) 
    } 
} 

func startParsing(data :NSData) 
{ 
    let dict: NSDictionary!=(try! NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers)) as! NSDictionary 
    for i in 0 ..< (dict.valueForKey("ads") as! NSArray).count 
    { 
     arrDict.addObject((dict.valueForKey("ads") as! NSArray) .objectAtIndex(i)) 
    } 
    MyTableView.reloadData() 
} 

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

      return arrDict.count 
} 
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 
let cell = tableView.dequeueReusableCellWithIdentifier("FirstCell") as! FirstTableViewCell 
    let strTitle : NSString=arrDict[indexPath.row] .valueForKey("categoryname") as! NSString 
    let photoImage : NSString=arrDict[indexPath.row] .valueForKey("image1") as! NSString 
    let SecondImage : NSString=arrDict[indexPath.row] .valueForKey("image2") as! NSString 
    let ThirdImage : NSString=arrDict[indexPath.row] .valueForKey("image3") as! NSString 
    let FourthImage : NSString=arrDict[indexPath.row] .valueForKey("image4") as! NSString 
    let URL_API_HOST2:String = "https://www.imagestring.com/" 
    // let FourthData = NSData(contentsOfURL: NSURL(string: URL_API_HOST2 + (FourthImage as String))!) 
    cell.image1.sd_setImageWithURL(NSURL(string: URL_API_HOST2 + (photoImage as String))) 
    cell.image2.sd_setImageWithURL(NSURL(string: URL_API_HOST2 + (SecondImage as String))) 
     // cell.image2.image = UIImage(data: SecData!) 
    cell.image3.sd_setImageWithURL(NSURL(string: URL_API_HOST2 + (ThirdImage as String))) 
    cell.image4.sd_setImageWithURL(NSURL(string: URL_API_HOST2 + (FourthImage as String))) 
    cell.CategoryName.text = strTitle as String 
    return cell 
    } 

問題：我已經加載這被稱爲category..now我需要使用搜索bar..subcategory取子類數據的一個API密鑰有另一個API ...

Answer 1

Apple聲明： UISearchController對象管理基於與搜索欄的交互顯示搜索結果。 description here

如果找你如果找你使用UITextField

import UIKit 

class TDSearchVC: UIViewController , UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate{ 


    @IBOutlet var textSearch: UITextField! 
    @IBOutlet var tblSearchResult: UITableView! 

    var arrData : [String] = [] 
    var arrFilterData : [String] = [] 
    var isSearch : Bool! 


    override func viewDidLoad() { 
     super.viewDidLoad() 

     // Do any additional setup after loading the view. 

     isSearch = false 

     /* 
     * If date Data is in Json then use JSON Serialization 
     */ 
     arrData = ["Apple", "Banana", "Chikoo", "Brew", "Cherry", "Mango", "Lotus", "Peacock", "Temple", "Pine Apple","Glass", "Rose", "Church", "Computer", "Carrot"] 

    } 

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

    // MARK:- textfield 

    public func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool{ 

     var searchText = textField.text! + string 

     if string == "" { 
      searchText = (searchText as String).substring(to: searchText.index(before: searchText.endIndex)) 
     } 

     if searchText == "" { 
      isSearch = false 
      tblSearchResult.reloadData() 
     } 
     else{ 
      getSearchArrayContains(searchText) 
     } 

     return true 
    } 

    // Predicate to filter data 
    func getSearchArrayContains(_ text : String) { 
     var predicate : NSPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", text) 
     arrFilterData = (arrData as NSArray).filtered(using: predicate) as! [String] 
     isSearch = true 
     tblSearchResult.reloadData() 
    } 

    // MARK:- TableView Delegates 
    public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{ 

     if isSearch! { 
      return arrFilterData.count 
     } 
     else{ 

      return arrData.count 
     } 
    } 

    public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{ 

     var cell : UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "cell")! as UITableViewCell 

     if isSearch! { 
      cell.textLabel?.text = arrFilterData[indexPath.row] 
     } 
     else{ 

      cell.textLabel?.text = arrData[indexPath.row] 
     } 
     return cell 
    } 
}